Litchi planting

Litchi is one of the main fruits in our city. Tengxian Jiangkou litchi, Cangwu Gufeng litchi and Shatou late-maturing litchi have always been popular in the market, with obvious planting benefits. The local government and farmers regard it as an important way to adjust the agricultural structure and increase income. In the rural areas of our city, the development of forest fruits led by famous fruits such as litchi continues to heat up, and 100-mu orchards and 1,000-mu litchi orchards continue to appear. Only Longxu Town, Cangwu County has newly planted more than 3,000 mu of litchi, and the city has adjusted its variety structure by more than 50,000 mu.

Litchi is a tropical plant, which is not suitable for potted plants. You'd better plant it on the ground. If you are a friend from the north, you'd better use a big pot when potted.

Light is the necessary energy for litchi to produce organic matter through photosynthesis. Litchi is a sun plant, which needs enough sunlight to be beneficial to its growth and development. Sunlight can promote assimilation, flower bud differentiation and fruit color and flavor. However, if the sunshine is too strong and the evaporation is large, the filaments will wither, the stigma will be dry, and pollination will be difficult, so the sunshine at the flowering stage should be long and not too strong. During the development of young fruits, the weather should be sunny, otherwise insufficient sunshine will affect photosynthesis, resulting in malnutrition and fruit drop. It needs to be sunny when the fruit is ripe, otherwise the color of the fruit is not fresh, the fragrance is light, the sugar is low and the quality is poor. Folklore: "Litchi goes south, longan goes north", which is the experience summary of fruit farmers for many years. There is more sunshine in the south, southeast and southwest, which is beneficial to flower bud differentiation and good fruit quality.

The lowest tolerance low temperature of litchi is about 0℃, and the limit is -2℃. Therefore, the temperature should be kept above 2℃ when potted. It can be cured at natural temperature in summer and autumn.

Germinated spring buds or flower heads need to be wetted in the soil to get good results. When it rains during flowering, the flowers will rot, resulting in little or no fruit. During flowering, especially when female flowers are in full bloom, sunny days are conducive to pollination. After winter, litchi enters flower bud differentiation. At this time, when the humidity of soil and air is low, the juice concentration can be increased, which is beneficial to flower bud differentiation.

Pest control should be timely, generally spraying broad-spectrum fungicides and pesticides. Such as carbendazim, Jiatuo, zineb and other sterilization; Kung fu, cypermethrin, dimethoate, etc. Home page-> Litchi planting techniques

High-yield cultivation techniques of pollution-free litchi (February 2008 15)

The main pests and diseases in litchi fruit period are stem borer, Phytophthora frost and anthracnose. Before and after bagging, spray topaz or Spock to control diseases, and spray trichlorfon and amitraz to control pests. When conditions permit, it is recommended to use microbial pesticides, plant pesticides and mineral pesticides or insect growth regulators. Protect and utilize natural enemies. Bordeaux mixture can be sprayed when bagging.

Management of intertillage irrigation and drainage in litchi orchard (February 2008 15)

Generally, plough and loosen the soil 2 ~ 4 times a year. 1 time shallow hoeing can be carried out in February and March to facilitate the germination of new roots. For the second time, according to the early-maturing and late-maturing varieties, the depth of ploughing can be 7.5 cm ~ 10 cm after fruit picking or before fruit picking, and fertilization can be combined to promote the germination of new roots.

Litchi and longan can be prevented from freezing by smoking (February 2008 15)

The technical staff of the Municipal Agriculture Bureau reminded farmers that the following measures should be taken in view of the current situation: First, clean the ditches and promptly eliminate the accumulated water in the fields. The second is to spray antifreeze. Thirdly, on the basis of plastic film mulching, the crops such as pepper, eggplant, strawberry and sweet corn seedlings are protected from cold damage by using plastic arch shed. Fourth, fruit trees, such as litchi and longan, should be fumigated to prevent freezing.

Autumn is the time when litchi and longan germinate (065438+2008125 October).

Fertilize. Under the condition of high temperature, the leaves of fruit-laden orchard decline, turn yellow or fall off, so it is necessary to replenish nutrients in time, otherwise it will affect the growth of plants. Results For many trees or weak trees, 1 times available nitrogen fertilizer was applied before and after fruit picking, 1-2 times agronucleotide and 0. 1% urea were sprayed when new shoots were taken out, organic fertilizers such as peanut bran and chicken manure were applied when new shoots turned green, and pruning was considered when new shoots were taken out for the second time. Well-managed orchards are on the market.

Bagging litchi (065438+2008125 October)

In addition, litchi with no pests, low pesticide residues and high quality will have an inestimable impact on the export market of litchi with almost strict quarantine requirements. Especially in Europe, America, Japan, South Korea, South Asian countries and Taiwan Province Province of China, the quarantine of diseases and pests (stem borers) of imported litchi is very strict, and the litchi produced by traditional methods cannot completely solve the problems of diseases and pests.

High Grafting Techniques of Guiwei Litchi (065438+2008125 October)

Fertilization should be applied before grafting to facilitate the recovery of growth after grafting. After grafting, tie streamers around the grafted plants to drive away birds and prevent them from pecking at new buds. Spraying pesticides to prevent ants from eating; After the new buds are extracted, spray drugs to prevent pests from eating. Keep removing new buds from the rootstock, and no new leaves can grow on the old leaves, so as not to affect the growth of the scion.

Comprehensive cultivation techniques for high and stable yield of litchi fruit trees (065438+2008125 October)

Seasonal plants, combined with pruning, are conducive to ventilation and light transmission. If individual litchi orchards have been planted too densely, which affects ventilation, light transmission and photosynthesis, resulting in no fruit in successive years, methods such as thinning plants year by year or combining with pruning branches year by year can be adopted to promote litchi flowering and fruiting.

Regeneration and rejuvenation of litchi declining orchard (12/07 14/07)

At present, there are roughly three types of litchi orchards with declining production: 1 type is an old and weak tree, which is mainly caused by poor management, long age, gradual deterioration of site conditions, even bare roots and insufficient nutrient supplement; The second kind is young or adult weak trees, which are mainly caused by poor garden soil conditions and thick seeds and pipes.

How to plant litchi around the fields and along the river? (65438+February 2007

Generally, the soil around the fields and along the river is fertile and full of water, which is beneficial to the early growth and rapid growth of litchi seedlings. However, due to its high groundwater level, frequent water accumulation and shallow rooting soil layer, it has certain influence on the normal growth of litchi.

What problems should be paid attention to when planting litchi in different seasons? (65438+February 2007

Litchi is better planted in spring and autumn, but it is required to be planted after the branches mature. If you dig seedlings with mud balls, you can plant them all year round, but the temperature is low in winter, and the litchi seedlings grow slowly after planting, so they are usually planted in spring, summer and autumn.

What problems should be paid attention to in the early stage of planting litchi in litchi orchard? (65438+February 2007

The survival rate of litchi seedlings after planting depends on the nursing work after planting. From sowing to the first shoot emergence, the growth of seedlings depends entirely on their own accumulated nutrients, which lasts for 1.5~2 months. The growth of roots is particularly important at this stage. If roots grow more vigorously than branches and leaves, the survival rate of seedlings is higher. If the branches and leaves grow stronger than the roots, and the roots grow weaker, the survival rate of seedlings will be low.

How to fertilize weak trees in litchi orchard? (65438+February 2007

The strength of tree potential can be judged according to the growth of crown leaves, the shade of leaves and the thickness of branches. Weak trees can be regarded as small branches, light leaves, thin and short branches, and even more litter. Generally, weak trees have few underground roots and low absorption capacity of fertilizers. Therefore, we should pay attention to the fertilization of weak trees.

Autumn and winter management of litchi orchard (65438+February 2007 65438+April 2007)

According to different varieties of litchi trees, it is required to complete the cultivation of autumn shoots and fruiting mother branches in time in autumn, and enter the flower bud differentiation stage in winter to lay a good foundation for flowering and fruiting in the coming year.

How to determine the planting distance of litchi (65438+February 2007+April 2007)

Litchi planting distance, that is, planting density and plant spacing, should be determined according to the environmental conditions, cultivation management level, expected yield target and project funds. Those who expect to put into production and harvest early cannot adopt the traditional sparse planting method.

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