When did you plant soybeans?

Generally, fine varieties are selected before and after Tomb-Sweeping Day and before sowing, and treated with ammonium molybdate and new high-fat film (which can effectively isolate virus infection, not affect the function of germination and expansion, strengthen respiratory intensity and improve seed germination rate). Sow in time as required.

When will soybeans be planted?

Soybean in China can be divided into spring soybean type, Huanghuaihai summer soybean type, southern summer soybean type and autumn soybean type according to sowing date.

1. Spring soybean type

The northern spring soybean types were sown from April to May and matured in September, while the Huanghuaihai spring soybean types were sown from late April to early May and matured from late August to early September. The types of spring soybeans in the Yangtze River are sown from the end of March to the beginning of April and mature in July. The southern spring soybean type is sown from February to early March, which is more mature than mid-June. Spring soybean is short of sunshine and weak.

In May, there was sufficient precipitation and suitable temperature in most parts of Northeast China, which was very beneficial to soybean sowing and early sowing of soybean seedlings.

2. Types of summer soybean in Huanghuaihai

Wheat is sown in June after harvest and ripens from September to1early October. Short sunshine is moderate.

3. Types of Summer Soybean in South China

Generally, it is sown after wheat harvest or other winter sowing crops are harvested and protected in early May-June, and it will mature at the end of September to 10. Strong short sunshine.

4. Autumn soybean types

Sowing from the end of July to the beginning of August,1the first half of October 165438+ ripens. The short sunshine is extremely strong.

On April 24th this year, local officials in Heilongjiang, the largest soybean producing area in China, said that the soybean planting area in Heilongjiang may decrease this year, and the temperature in April was lower than that in the same period last year, which will delay the planting time by about 10 days to the beginning of May. It's May 5th, and soybean planting will begin one after another.

The main soybean producers in the world are Argentina, the United States, Brazil and so on. Soybean planting has also begun in all parts of the United States. According to the news of USDA on May 3rd, USDA announced in its weekly crop growth report on Monday (May 3rd) that as of the week of May 2nd, the soybean planting rate in the United States was 15%, compared with 5% in the same period of 2009, with a five-year average of 8%.

If you want to know the price information of soybeans, you can go to "Soybean Information".

Soybean information exchange is a platform for soybean information exchange, which timely publishes soybean spot market quotations of major domestic and foreign enterprises and markets and tracks the trend of soybean futures prices.

When will soybeans be planted?

Generally from late May to early June. The time varies slightly from place to place.

Growth habit of soybean:

Soybean likes temperature, and its seeds begin to germinate at 10- 12℃.

The optimum temperature is 15-20℃ and the growth temperature is 20-25℃.

The optimum temperature for flowering and pod setting is 20-28℃.

Pod setting is delayed at low temperature, and it cannot bloom below 14℃.

If the temperature is too high, plants will end their growth early.

Seed germination needs more water,

The soil water content is required to be 70%-80% at flowering stage.

Otherwise, it will increase the bud drop rate.

The amount of fertilizer absorbed by soybean before flowering is less than 15% of the total.

The flowering and pod-setting period accounts for more than 80% of the total fertilizer absorption.

When is the best time to sow southern soybeans? 5. What season is soybean planting?

It can be planted after the vernal equinox until the end of May.

Soybean planting time

Generally, excellent varieties are selected before and after Tomb-Sweeping Day and before sowing, and treated with ammonium molybdate and new high-fat film (which can effectively isolate virus infection, not affect germination and imbibition function, strengthen respiratory intensity and improve seed germination rate). Sow in time as required.

Planting techniques:

One is seed treatment to improve germination rate.

Select seeds with full seeds to dry, so as to improve the growth potential of seeds. When sowing, seed is dressed with 0. 1% ~ 0.2% ammonium molybdate or rhizobia (0.5 kg microbial inoculum 10 kg seed). According to the experiment, the treated bulbs formed earlier and more, grew faster, branched earlier, the seed setting rate and the number of full pods increased, and the yield increased 15%-25%.

Second, carefully prepare the soil and apply sufficient base fertilizer.

Deep ploughing for 20 ~ 25 cm, repeated harrowing, turtle ridge 1.2 m (paddy field), the dry slope can be wider to prevent water from rotting the roots. Potassium phosphate fertilizer is especially needed in the early stage, especially in the three-leaf stage, so 1 500 kg soil miscellaneous fertilizer, 600 kg fireclay ash or plant ash, 10 kg phosphate fertilizer and 20 kg compound fertilizer should be applied per mu, mixed evenly to make base fertilizer, and then holes should be opened for sowing. Row spacing 16 ~ 48cm, plant spacing 12- 14cm. Sow 1 ~ 2 seeds per hole, and the number of plants per mu will reach 2880 ~ 30000.

Third, choose autumn-turning varieties to ensure the integrity of one seedling.

Spring sowing often encounters low temperature and rainy weather, which leads to seed rot and affects the whole seedling. Selecting improved varieties with high germination rate, strong growth potential, seedling protection and early maturity is the key to achieve stable and high yield. The improved varieties suitable for paddy field planting are Yuedou 1 and Yuedou 2. The improved varieties suitable for planting in red soil hills are Zaomaohuang, Dahuang, Yuedou L and so on. The improved varieties have the characteristics of compact plant type, stockiness, drought resistance and humidity resistance. Soybean is more resistant to low temperature, and the temperature is generally stable at IO-hour. Qugong t; C (from beginning of spring to rain) is the best sowing date, which is conducive to promoting multi-branch and multi-pod, and easy to obtain high yield.

Fourth, plough early and topdressing early. Promote flowering and pod setting, prevent lodging and increase yield.

L, soybean is a crop like intertillage, which grows slowly at seedling stage and is easy to grow weeds. When the seedling height is 1.5 ~ 20 cm, intertillage weeding and soil cultivation should be carried out to promote the development of rhizobia, and soil cultivation to cotyledon nodes can prevent lodging. Applying 50 ~ 60 kilograms of lime powder skillfully per mu during intertillage can improve the ability of resisting pests and diseases and lodging, and increase the grain weight.

2. Apply 5 kg of urea and 7 kg of potassium chloride per mu at the initial branching stage, and cooperate with the second intertillage to improve the effective pod setting rate.

3. When the bank is closed, chemical control can promote dwarfing and strengthening. Spraying 0.7 g paclobutrazol and 25 kg water per mu can promote dwarfing and increase the number of pods per plant.

4. Spraying phytosanitary and potassium dihydrogen phosphate L-2 times during flowering and pod setting can improve the seed setting rate by more than 20%.

5. Spraying inhibitors skillfully, striving for perfection and promoting production increase.

4 ~ 5g sodium sulfite mixed with 50kg water at flowering stage, spraying 1 time every week for 2 ~ 3 times, can enhance the photorespiration intensity of soybean, reduce the consumption of photosynthetic products, increase the dry matter accumulation and increase the yield by 8%-65,438+00%; Topping and removing the top 20 days before harvesting can increase the seed setting rate by 8%- 10%.

Six, pest control. Protect plants, flowers and pods to ensure benefits.

In the early stage of soybean, there were aphids, cutworms and fruit eaters, and in the middle stage, there were borers, ladybugs and leaf spot diseases, which harmed young leaves and young ears and ate pods. Appropriate pesticides should be selected for timely control.

When will soybeans be planted?

Soybean in China can be divided into spring soybean type, Huanghuaihai summer soybean type, southern summer soybean type and autumn soybean type according to sowing date.

1. Spring soybean type

The northern spring soybean types were sown from April to May and matured in September, while the Huanghuaihai spring soybean types were sown from late April to early May and matured from late August to early September. The types of spring soybeans in the Yangtze River are sown from the end of March to the beginning of April and mature in July. The southern spring soybean type is sown from February to early March, which is more mature than mid-June. Spring soybean is short of sunshine and weak.

In May, there was sufficient precipitation and suitable temperature in most parts of Northeast China, which was very beneficial to soybean sowing and early sowing of soybean seedlings.

2. Types of summer soybean in Huanghuaihai

Wheat is sown in June after harvest and ripens from September to1early October. Short sunshine is moderate.

3. Types of Summer Soybean in South China

Generally, it is sown after wheat harvest or other winter sowing crops are harvested and protected in early May-June, and it will mature at the end of September 10. Strong short sunshine.

4. Autumn soybean types

Sowing from the end of July to the beginning of August,1the first half of October 165438+ ripens. The short sunshine is extremely strong.

When will soybeans be planted in North China?

Plant it now, or plant it after harvesting wheat in summer. Grain Rain planted spring soybeans before and after, and harvested wheat to plant soybean after wheat.

When will soybeans mature?

According to the climate division of soybeans in China, soybeans are generally planted except in high altitude and high latitude areas with insufficient heat and areas with annual precipitation below 250 mm and no irrigation conditions. China's soybean production areas are concentrated in Northeast Plain, Huanghuai Plain, Yangtze River Delta and Jianghan Plain. According to the characteristics of soybean varieties and different farming systems, soybean production in China is divided into five main producing areas:

The first is the spring soybean area dominated by the three northeastern provinces.

Summer soybean area in Geng and Huang-Huai river basins

Three, the Yangtze River Basin spring sowing and summer sowing soybean area

4. Autumn soybean planting area in southern Jiangnan

Five, Guangdong, Guangxi and southern Yunnan soybean multiple cropping areas

Among them, spring sowing soybeans in Northeast China and summer sowing soybeans in Huanghuaihai are the two areas with the largest soybean planting area and the highest yield in China, and the quality of soybeans in Northeast China is the best.

Heilongjiang, Jilin, Liaoning and northeastern Inner Mongolia are harvested once a year in the northeast spring sowing soybean area, and the temperature is 2700~2850℃, about 140 days, with spring sowing and autumn harvest.

Spring soybeans are planted in the south of Tianjin, Beijing and Shijiazhuang, most of Shandong and Henan, northern Jiangsu and Anhui, southwestern Shanxi, Guanzhong, southern Gansu, southern Guangdong, Guangxi and Fujian for 90~ 100 days and 2600~2800℃. They are planted in February and March, and most of them mature in late June and early July.

When will soybeans be planted?

It is most suitable to grow soybeans between summer solstice and hot summer.

1. Sowing soybeans can be sown after wheat harvest as long as the water content is appropriate. The best sowing date is June 10 ~ 25, and no later than early July.

2. Generally, autumn sowing should be before August 10.