Introduction of fine new varieties

Introducing fine varieties is a "short, high and fast" technology with less investment, short time, high benefit and quick effect. The introduction of excellent new varieties is mainly to solve the demand for high-quality and high-yield varieties to improve agricultural production efficiency, and it is an important way to promote the adjustment of agricultural industrial structure, optimize the utilization of agricultural resources, and realize agricultural production and income increase. By introducing excellent new varieties and digesting and absorbing them. Form the dominant varieties in the demonstration area and better promote the development of "high yield, high quality and high efficiency" agriculture.

When introducing new varieties, we should focus on the climate, water, soil and production conditions in the demonstration area and similar areas, and make clear the adaptability, growth habits and resistance, product quality, yield advantages and market prospects of the introduced varieties.

Whether climatic conditions are suitable for introducing excellent crop varieties is the key, and the conditions of water and soil resources are the foundation; For the introduction of improved livestock and poultry varieties, the conditions of climate, water and soil and feeding materials are also very important. At the same time, it should be clear whether the purpose of introduction is pure breeding or improvement of local varieties. According to the climate, water and soil resources, environmental quality and basic conditions of agricultural and animal production materials in central Guangxi, the demonstration project has carried out the introduction and demonstration of excellent crops, new varieties of fruits and vegetables and improved varieties of livestock and poultry. The main imported varieties and technical points are as follows.

High quality conventional crop varieties

1. Improved peanut varieties

Guihua 22 is a new peanut variety with high yield and high oil content, which is bred by crossing He Yue 1 as female parent and wild peanut as male parent. The average pod yield in Guangxi for many years is 247.85 kg/mu. The main stem of this variety is 50 cm high, with compact plant type, 8 branches, 5-6 fruiting branches, 16- 18 per plant, 682 fruits /kg, 100-fruit weight 156 g, 100-grain weight 67.3 g, grain yield 73% and oil content 55. Guihua 22 is an oil peanut variety, which is suitable for planting in the paddy-upland rotation area with medium fertility in Guangxi.

Guihua 26 is a new peanut variety with high yield and multi-resistance, which is bred by using local varieties as female parents and Yueyou 223 as male parents. After trial planting, the average pod yield reached 267.5 kg/mu. This variety is upright and compact, with strong growth potential. The main stem is 45 cm high and the branches are 50 cm long. There are 7 branches in total, and 5 branches bear fruit, with 16 ~ 20 per plant, full fruit rate of 8 1%, double-kernel fruit rate of 83.2%, 100-fruit weight of 185 g and 100-grain weight of 73 g. Osmanthus fragrans 26 is suitable for paddy-upland rotation planting.

2. High quality corn varieties

In addition to publicizing and encouraging people in the demonstration area to use excellent varieties with drought tolerance and strong adaptability, such as Zheng Da 6 19, Dika 007 and other varieties promoted in the seed market, the excellent new varieties of Xiaonan 15, the scientific research achievements in this area, were introduced emphatically. The improved variety is a hybrid combination with 6047 as female parent and 9229 as male parent. It belongs to a compact variety, with wide leaves and stout stems, the number of leaves is 17 ~ 19, the plant height is about 235 cm, the ear position is about 89 cm, the ear length is cylindrical, the ear length is 18 ~ 22 cm, and the rows per ear are14 ~/kloc-0.

Xiaonan 15 is a mid-mature variety, and its growth period is 1 13 d in southeast Guangxi, and 93 d in middle and late Guangxi. Resistant to many corn diseases; Inoculation identification showed that Great Leaf Blight was 0 ~ 1.0, Small Leaf Blight was 0 ~ 0.5, Smut was 2.9%, Ralstonia solanacearum was 0.8% and Sheath Blight was 22.8%. It is more susceptible to sheath blight. This variety has uniform and full seeds, beautiful color, good commodity and excellent quality. The analysis and testing results of Guangxi University Biotechnology Center show that the protein content of grain is 1 1.05%, lysine is 0.29%, crude fat is 5.48%, and starch is 69.4%.

1999 participated in the screening test of new maize varieties in Guangxi. Among the 35 varieties tested, the average yield of 7 test sites was 7623kg/hm2, ranking second. In 2000, he participated in the 15 regional trial of improved maize varieties in Guangxi, with an average yield of 6685.5 kg per mu, ranking third in the trial planting. In 7 experiments, 5 points increased yield than the control, accounting for 7 1.4% of the experimental planting.

According to the experimental research of maize research institute of Guangxi Academy of Agricultural Sciences, Xiaonan 15 is a semi-compact variety with large panicle type and large leaf area per plant. The density of high-fertilizer plots does not exceed 4,000 plants/mu, and the density of medium-fertilizer plots does not exceed 3,500 plants/mu. Xiaonan 15 prefers fertilizer and water, and should give medium and high-grade fertilizer and water input. Apply 1 500 ~ 2 000 kg farm manure and 50 kg compound fertilizer as base fertilizer per mu. Top dressing should pay attention to the reasonable collocation of nitrogen, phosphorus and potassium. Generally, nitrogen15 ~ 18kg, phosphorus (P2O5) 5 ~ 6kg,18 are applied per mu. Xiaonan 15 is slightly susceptible to sheath blight, so attention should be paid to controlling pests and reducing field humidity. In addition, when there is too much nitrogen fertilizer and the nutrients are not coordinated, strange bracts will appear. Therefore, it is necessary to apply more potash fertilizer and remove the strange buds in time. In this project, 60 mu of Xiaonan15 was introduced in Yang Xiaoping Demonstration Zone. The results showed that compared with the original varieties planted in the experimental area, Xiaonan 15 had better drought resistance, and had the advantages of thick stems, short stalks, multiple spikes, large spikes and high yield. The average yield is 30% ~ 50% higher than that of the old varieties, which is suitable for popularization and planting in central Guangxi.

High-quality and efficient cash crop varieties

1. High-quality fruits with climatic zone advantages

Guangxi is the main fruit producing province in China, mainly producing subtropical and tropical fruits. Fruit trees have become a new pillar industry in agriculture and rural areas and an important way for farmers to increase their income and get rich. At present, the fruit industry in Guangxi has gradually realized the scale and base layout. Longan, litchi, pineapple, banana, mango, citrus, persimmon, peach, plum, chestnut and Shatian pomelo are all distributed in Guangxi, but the fruit production in central Guangxi is still very weak. The above fruits have large area and high total output. After China's entry into WTO, they have been impacted by foreign countries, and have changed from output-oriented to quality-oriented, which is no longer suitable for opening up new industrial bases. After China's entry into WTO, we can see that the varieties that are not impacted by similar foreign fruits are: wampee, olive, loquat, pomegranate and so on. Introduced new varieties that can give full play to the environmental advantages of producing areas include pitaya and honeydew melon. Considering the purpose of this project and the present situation of fruit production at home and abroad, loquat is an early-maturing off-season fruit with obvious market advantages. However, Fujian, Zhejiang, Sichuan and other provinces outside the region have formed industrial production many years ago, so it is difficult for the follow-up development of central Guangxi to seize the domestic and foreign markets, so it is appropriate to moderately develop planting (the development of southern Guangxi is better). Olive has a long fruiting period after sowing, low yield in the early fruiting stage and limited market consumption, which is only suitable for ecological and economic purposes. China ranks first in the world in fruit production, with exports accounting for only 2% and processing accounting for only 10% of the total output. Experts and authorities point out that after China's entry into WTO, the main focus of fruit production in China is to expand exports, followed by vigorously developing processed varieties (Guangxi fruit development strategy also advocates vigorously developing processed varieties). To sum up, the high-quality fruits introduced in this demonstration project have the following varieties.

(1) seedless wampee with large fruit

Its technical and economic advantages are as follows: (1) It is an excellent fruit tree variety unique to southern China, one of Lingnan fine fruits, and it is a nutritious and health-care out-of-season fruit with popular consumption taste and excellent fresh processing, while seedless wampee is a newly selected excellent variety with large fruit, high pulp content, good flavor quality and excellent fresh processing, which is an ideal export variety; ② The suitable planting area of seedless wampee is limited to the south-central part of Guangxi, and there is no large-scale planting at present, which is far from meeting the demand of fresh fruit market. It is sweet and sour, helps digestion and health care, and has a large consumer market. In addition, it can also be processed into high-grade jam, juice and beverage, which is an export-oriented processing variety advocated by the state. (3) Seedless wampee is easy to control pests and diseases, and fruit farmers can easily accept and master cultivation techniques, which is beneficial to the production of pollution-free fruits. It has the advantages of fast growth, early production period, high yield and high yield year after year, which is easy for large-scale planting and industrial management, and has great development potential by changing variety advantage into commodity advantage and economic advantage; ④ Seedless wampee belongs to Rutaceae, which is an excellent variety formed by wampee germination. It has the advantages of large fruit, sweet taste, high yield and wide adaptability. Seedless yellow skin is moisture-proof and drought-tolerant. The climate in the demonstration area is very suitable for the growth of seedless wampee, and it is the most suitable planting area for seedless wampee with rich land resources.

The seedless wampee is most suitable for planting in areas where the annual average temperature is above 20℃, 1 month average temperature is above 8℃, the annual accumulated temperature is above10℃ and above 6 000℃, the frost-free period is above 300 d, and the frost day is below 6 d. Litang Town in the demonstration area has a subtropical monsoon climate with an annual average precipitation of 65,438 0584 mm. The annual average sunshine hours are 65,438 0,600.5 h, the frost-free period is 332 d, and the frost day is 65,438 0.5 d ... The landform is karst butte plain and karst hilly area, with a large area of dry land, mostly red loam, heavy texture, low organic matter content and poor soil. There are abundant land resources, sloping land suitable for farming and grazing, many barren hills and a large area of cultivated land per capita. It has climate and water and soil resources conditions suitable for development.

The imported seedless wampee has the advantages of strong adaptability, fast growth, early production period (put into production three years after planting), few pests and diseases, easy management, high benefit, long economic life, high and stable yield, large fruit (up to 30 g/ piece), high pulp content (90%) and good flavor quality (soluble solids 20%, total sugar content 17.6).

(2) loquat with big fruit

Loquat is a unique subtropical evergreen fruit tree in southern China. Loquat is a high-quality variety bred and popularized in recent years. Its pulp is soft and juicy, sweet in flavor, delicate in quality and rich in various nutrients needed by human body. Eating loquat regularly can relieve cough, moisten lung, promote diuresis and strengthen stomach, clear away heat, and also has curative effect on liver disease. It is an important nutritional fruit and health-care fruit. When the fruit is ripe, it is in the critical period when other fruits can't be listed in early summer, so it is deeply loved by people. Loquat can not only be eaten fresh, but also processed into canned food, which is very popular in domestic and foreign markets.

Eriobotrya macrocarpa is a Rosaceae plant, which is native to southwest China. Besides China, it is also cultivated in the United States, Spain, Japan and Australia. Loquat likes warm and humid climate, and can bear fruit normally in areas with annual average temperature above 65438 05℃ and annual precipitation of 800 ~ 2200mm. Although loquat likes warmth, it has the strongest cold resistance among evergreen fruit trees in southern China. Loquat can grow normally above the annual average temperature 12℃, and the economic cultivation effect is good above the annual average temperature 15℃. Loquat flowers can tolerate -4℃ low temperature, seedlings can tolerate -7℃ low temperature, and trees can tolerate-18℃ low temperature.

The cultivation and management of large fruit loquat is simple, and it can be planted in mountainous areas and plains. No matter sandy or clay loam, loquat can grow and bear fruit normally. It has wide adaptability to soil pH, and can grow and bear fruit normally in areas with pH value of 4.5 ~ 8.5. Loquat has fewer pests and diseases, and its dosage and frequency are much less than those of citrus and other fruit trees, so it is especially suitable for ordinary farmers to plant. Loquat has the characteristics of fast growth and early fruiting. After the grafted seedlings are planted, they can try to blossom and bear fruit in the second year, with a maximum yield of 5 kg. In the third year, the plant yield can reach 9 kg; Five years later, it entered the high-yield period, with a yield of 50kg per plant, and the highest yield per plant could reach 100 ~ 200 kg, or even more.

Loquat tree has beautiful posture, evergreen seasons and strong branching regularity, and can form a more standardized tree shape even without pruning, so it has both economic and ecological benefits.

(3) Pitaya

Pitaya is a cactus with fleshy stems, which grows on the ground in a natural state, with poor support, shallow root distribution, strong drought tolerance, long production cycle, fast yield and stable yield.

Pitaya is a fruit tree with high survival rate, short recovery period, fast growth and early fruiting period, which needs more water and fertilizer. Pitaya is drought-resistant and waterlogged-tolerant, and its survival rate is almost 100%. After planting 15 days, new buds began to germinate, which germinated more than 5 times a year. Some plants blossomed and bore fruit in the first year of planting, and entered a high-yield period in the third year, with a yield of 1500 kg/mu or more.

In karst areas, adequate water and fertilizer supply is an important prerequisite for the rapid growth, high yield and high quality of pitaya. Fertilization of pitaya can be divided into base fertilizer and topdressing. The base fertilizer is applied twice a year, that is, once before the growing season (March) and once after the fruit is harvested (September), with 20-25 kg/pit each time. "Early, thin and diligent" is the basic principle of topdressing pitaya. "Early" means that fertilization begins shortly after its survival and germination; "dilute" is mainly water and fertilizer such as bran water and biogas slurry water, with low concentration; "Diligence" means that the interval should be short and frequent, once every 10 ~ 15 days, and the interval between flowering and fruit picking should be appropriately shortened.

The early July of each year is the initial flowering period of pitaya, and then it blooms and bears fruit in mid-September, so the flowering amount is large and lasts for a long time. However, in the natural state, the fruit setting rate is low and the fruit is small, so it is necessary to sparse flowers and fruits and artificially pollinate them. Flower thinning is to remove weak flower buds or buds in the early flowering stage, and only 1 bud is left in each growing branch (node); After flowering, dip the pollen with a brush and touch the stigma.

In order to further improve the economic benefits of the demonstration area and increase farmers' production income, 200 mu was planted in Xinbu Village, Butang Village Committee of Litang Demonstration Area in 2002 to increase the planting area of economic fruit forest in the village. For example, Ye Fangbiao, a demonstration household, has 6 people, 4 laborers and 8.2 mu of cultivated land, including 4 mu of paddy field and 4.2 mu of dry land. In the past, rice and corn were the main agricultural industries, and the agricultural economic level was low. In 2000, the average household income was only 1420 yuan. In 2002, he planted 2.2 mu of pitaya under the organization of the project implementation team in the demonstration area. In 2003, with the strong support and help of County Science and Technology Bureau, Litang Town People's Government and Town Agricultural Service Center, he strengthened the technical skills training, strengthened the belief of taking the road of developing agriculture through science and technology, and the average yield per mu rose to 522.5 kg. At the same time, the average yield per mu reached 2 300 yuan in the first half of the year, and soybean reached 2,300 yuan in the second half of the year, more than planting 1520 yuan. When he tasted the sweetness for the first time, he had a further demonstration. In 2004, we managed and tried to interplant pepper 1 mu. Under the regular guidance of technicians from the town agricultural service center, the average yield per mu of pitaya, peanut and Layou No.4 pepper reached 65438±0520kg, 65438±062kg and 850kg, respectively, in 2004, and the annual output value per mu reached 6 300 yuan. In 2005, pitaya entered the rich period, and he tried to interplant ginger with 1 mu pitaya orchard. From June to 10 in 2005, the average yield per mu of pitaya was 2052 kg, and the average yield per mu of peanut was 170 kg. It is estimated that the average yield of ginger per mu will reach 500 kg, and the annual output value of ginger per mu will reach 654.38+0 million yuan. Only the per capita income of families will reach 3 300 yuan, which greatly improves the land utilization rate and the economic benefits of production. Under his influence, the original poor growers were driven, and some growers expanded their planting area, determined to strive for greater economic benefits in 2006.

2. High quality and high yield vegetable varieties

Guangxi is one of the main vegetable producing areas in southern China, and the vegetable industry has become the second industry after grain. According to statistics, the planting area of vegetables in 2002 was 96.4× 104hm2, and the total output was 2 660.75× 104t. The average yield per mu is 1.69 t, and the production cost is generally lower than that of other major producing areas at home and abroad. The price of domestic high-quality vegetable products is only equivalent to 1/8 ~ 1/5 of developed countries. In recent years, Guangxi's vegetable exports have increased substantially. In 2000, the vegetable export was 3.8513t, and the foreign exchange earned was15.8 million USD. In 2002, the edible vegetables and roots exported to the eastern allies alone amounted to 25,733,900 US dollars. The main varieties exported were garlic, onion, ginger, taro, potato, lotus root, tomato, boiled bamboo shoots, quick-frozen vegetables, mushrooms, auricularia auricula and dried peppers. Guangxi is rich in light, warmth and soil resources and is known as a "natural greenhouse". The climate in Guangxi is suitable for vegetable production, which can be planted and harvested all year round. In winter, there is generally no need for special cold-proof and heat-preservation measures, and the production cost is relatively low, which has obvious advantages in natural conditions and market competition. Based on this advantage, the vegetable industry in Guangxi has developed rapidly since the late 1990s. The planting area increased from165438+6 1× 104hm2 in 1996 to103.3x104hm2 in 2002, and the agricultural output value reached190.3 billion yuan. Governments at all levels actively develop the production of famous vegetables and stimulate farmers' enthusiasm for growing vegetables. At present, the planting scale of vegetables has accounted for 15.8% of the total crop area in Guangxi, ranking second only to rice.

Guangxi is rich in vegetable varieties, with at least 250 varieties cultivated all the year round, of which 100 are local famous and imported varieties. The benefit of vegetable industry in the future will mainly depend on the competitiveness of color varieties, commodity quality and time difference. However, there are few disease-resistant high-quality varieties and special processing varieties suitable for Guangxi climate. The breeding of new varieties, the introduction of two high and one excellent vegetable crop varieties, combined with the development of off-season cultivation, soilless cultivation, intensive cultivation and sprinkler irrigation and drip irrigation, can provide reliable technical support for the development of export-oriented vegetable industry in our region. According to the local climate, water and soil resources and the technical and economic conditions of the producing area, this demonstration project mainly introduces the following high-quality new varieties.

(1) Double-season lotus root

Lotus root is an aquatic vegetable with high nutritional value, high yield and considerable economic benefits. Lotus root has a long history in the demonstration area. In recent years, with the continuous adjustment of agricultural structure, lotus root has become the main vegetable variety in the demonstration area. Especially in low-lying paddy fields, rice planting yield is low and benefit is poor. Using this part of paddy field to develop lotus root production can produce 4-5 times higher benefits than planting rice, and the effect of increasing farmers' income is obvious.

Lotus root is a perennial aquatic herb, which is suitable for planting in ponds, lakes and low-lying areas. It needs a warm and humid environment and mainly grows in hot and rainy seasons. In central Guangxi, the suitable planting period of spring lotus root is from late February to mid-March. Autumn lotus root is most suitable for planting from late July to before beginning of autumn 10. Introduce varieties with strong stress resistance, early maturity and high yield in double-cropping lotus root cultivation, such as Jiayu lotus root, Erian 1 and 3. Jiayu lotus root is used in autumn.

(2) white radish

Radish is a cold-tolerant vegetable, and likes a mild and cool climate. The growth period varies with varieties, generally 45 ~ 90 days. For conventional varieties, the temperature at which seeds begin to germinate is 2 ~ 3℃, and the optimum temperature is 20 ~ 25℃. The optimum temperature for seedling growth is 6 ~ 65438 08℃, which can tolerate high temperature of 24℃ and low temperature of 2 ~ 4℃. If exposed to high temperature and dry conditions above 24℃ for a long time, it will hinder the growth of fleshy roots, cause cracking and easily cause diseases. Radish has large leaf area, large evaporation, few lateral roots, poor drought resistance and high requirements for air humidity and soil humidity. Generally, the soil humidity is 60% ~ 80%, and the air humidity is 80% ~ 90%. Too much drought leads to cracking, strong spicy taste and many fibrous roots. Radish likes neutral to slightly acidic soil, and the suitable pH value is 5.5 ~ 7.0. It requires deep soil layer, loose and fertile soil, and the minimum requirement for fertilizer is (n, 8g; ; p，3.5g； k， 12g； Calcium oxide, 3g/m2. Radish does not require high light, and can grow well in weak light or often dark weather. Under the condition of short sunshine, the growth period can be prolonged and the yield can be increased. It can't blossom and bear fruit under the illumination of10 ~12 h.

According to the local climatic conditions, the demonstration area introduced new radish varieties with drought tolerance and high temperature tolerance, such as Jipin Chunxuelian, a new radish variety from South Korea, with a plant height of 50 cm, a fleshy root length of 23.6 cm, a transverse diameter of 6.5 cm, a rectangular cone shape and a spring growth period of about 75 d. Strong cold resistance, high temperature resistance, bolting resistance, good quality and high commodity value. Sowing in February-March in spring, using the radish listed in the off-season in April-May, the yield per mu is 2500-3000 kg; "Baiyuxia" radish has strong disease resistance, good heat resistance, 50-55 d growth period, less fiber content, crisp meat, good taste and high degree of commercialization. The weight of single root is 1.0 ~ 1.5 kg, and the yield per mu is 3000 ~ 4000 kg. As well as a new domestic high-temperature resistant variety "Spring Snow Radish", the suitable temperature is 5 ~ 30℃, super-stem seeds are sown, and 4000 ~ 5000 plants are planted per mu, which can be planted all the year round in the south; "Summer Changbai Radish" likes warmth, good disease resistance and superior heat resistance. Fast growth and high yield. The leaves are erect and green, and the fleshy roots are long and cylindrical, about 25 cm long and 6 cm in transverse diameter, accounting for about half of the buried part. White pulp, good luster, excellent quality and flavor, less cellulose and no bran. The weight of single root is 0.5 ~ 1.0 kg, and it can be put on the market 45 ~ 50 d after sowing, with an yield of about 2000 kg per mu.

(3) xia yang cabbage

Xiayangbai is a heat-resistant and fast-growing Chinese cabbage variety bred at home and abroad. Xia yang White is deeply loved by farmers in the demonstration area and surrounding areas because of its resistance to damp and heat, disease, storage and transportation, and excellent quality. The introduction of new varieties mainly includes varieties with heat resistance, disease resistance, storage and transportation resistance and good quality. Huang Qinghe series with short growth period and high temperature tolerance was introduced and popularized in the demonstration area in spring and summer, and Chinese cabbage was planted with Xiayangbai 303, Baiqin No.3 and Shandong No.8 in autumn and winter.

(4) French green beans

French green beans are dwarf leguminous crops, and the suitable growth temperature is 18 ~ 28℃. Generally speaking, the plant height is 45 ~ 50cm；; Suitable for planting in early spring and late autumn in this area. Emerge in 6 ~ 7 days after sowing, bloom in about 35 days, and pick fresh beans in about 45 days. The picking period is about 35 days, and the whole growth period is 80 ~ 90 days. This kind of bean can be planted twice a year, and the yield per mu in one season is 900 ~ 1 000 kg. According to the characteristics of high climate temperature in the demonstration area, dwarf plants with high heat resistance, strong disease resistance, wide adaptability, high pod setting rate and relatively concentrated pod setting were selected, and the highest yield per mu could reach more than 900 kg.

(3) Introduce improved varieties of livestock and poultry adapted to agricultural development.

Guangxi has a large population, less arable land per capita, poor food production conditions, low production level and low food self-sufficiency rate. At present, the overall situation of grain supply and demand in Guangxi is that the total grain production is lower than the total consumption, and the total grain supply is obviously insufficient. Among them, rice can basically ensure effective supply, but the contradiction of variety structure still exists, which needs to be transferred in and out to adjust the surplus and deficiency; However, the supply gap of corn is large, and it needs to be transferred from other places to more than 6.5438+0 million tons every year to meet the demand. According to the data of Guangxi Zhuang Autonomous Region Agricultural Transfer Team, the sown area of grain crops in 2003 was 52.05 million mu, which was 6.5438+0.304 million mu less than that in 2002, with a decrease of 2.4%. The total grain output was 1, 465× 1.04t, which was 22× 1.04t lower than that in 2002, with a decrease rate of 1.5%. The per capita grain output is 303.3 kg, which is 30.9 kg lower than the highest level 1999, or about 9%. Rural families produce about 3 12kg of living food per capita, while urban families produce about 95kg. According to the statistics of urban and rural population in 2003, the grain for production and living of urban and rural residents in the whole region was about 12 10× 104t, and the total grain consumption in Guangxi in 2003 was about 1540× 14t, including feed grain produced by non-farmers and feed enterprises.

The per capita grain in Guangxi is 70-80 Jin lower than the national average, and the per capita cultivated land is lower than the national average 1. 1 mu. The income level of urban and rural residents is low, there are many poor people, and their ability to resist food risks is weak. In terms of grain utilization, feed grain accounts for about 35% of the total grain consumption. With the rapid development of animal husbandry and aquaculture, this proportion is rising. Therefore, we should vigorously develop grass-eating and grain-saving livestock and poultry breeding production, develop green feed and aquatic feed, convert crop stalks into feed, replace flour and rice with starch, and scientifically develop animal husbandry while ensuring food security in Guangxi to realize the sustainable development of agriculture. In the development and demonstration of aquaculture technology, this demonstration project takes into account the balanced development of ecology, production and life. In order to accelerate the professional and large-scale development of animal husbandry in karst areas, improve the quality of livestock and poultry varieties, develop the economy in the dry areas of central Guangxi and improve the living standards of farmers, we will focus on introducing and popularizing improved beef cattle, cows, binary hybrid lean pigs, improved chickens, rabbits and geese, breeding and variety improvement, planting high-yield and high-quality forage, and introducing advanced scientific breeding. The model of "planting (green fodder)-breeding (herbivores)-biogas-planting (green fodder)" is used to establish a virtuous cycle of agriculture and animal husbandry ecological chain, providing a good ecological environment and a high-standard mode of getting rich through science and technology for the people in karst dry areas in central Guangxi. For example, 200 1, Huang Yueyou of Qingling Village in Yang Xiaoping Demonstration Zone, with the support of various contractors, introduced Duroc boars 1 head, 5 landrace sows and 32 binary hybrid sows. After four years of development, more than 800 lean piglets and 400 live pigs have been slaughtered, which has become a large local breeding household with a certain scale and influence.