When are soybeans sown?

Soybean is one of the important food crops in China, commonly known as soybean, leguminous soybean is an annual herb, native to China, by wild soybean through long-term directional selection, improvement and domestication, has been cultivated for five thousand years, all over China are cultivated, the most famous in Northeast China, but also widely cultivated in all parts of the world, let's take a look at when soybeans are sown!

Growing time of soybeans

Soybean planting time is changed according to the weather, and its planting time is generally divided into spring sowing and summer sowing. Spring sowing is carried out around Qingming, and the harvest period is September (August of the lunar calendar). Summer sowing is carried out after wheat harvest and harvested from late September to mid-October. There is also a northeast soybean sowing date a little later, but the harvest time is not much. Spring soybean is sown from April to May in northern China, summer soybean in Huanghuaihai is sown in June after wheat harvest, summer soybean in southern China is sown from May to early June and autumn soybean from late July to early August.

Pre-sowing treatment of soybean

1. Soil preparation before sowing: soil preparation before sowing includes soil tillage, harrowing, pressing, etc. Different soil preparation techniques are different before sowing, such as flat tillage, ridge cultivation, harrowing stubble, deep loosening, etc.

2. Irrigation before sowing: soybean before sowing For plots with poor moisture content, irrigation conditions can be irrigated once 1~2 days before sowing to soak the soil to facilitate seed germination after sowing.

3, closed weeding: soybean cultivation in large areas such as management is not timely, the weed damage is serious, often before sowing using mechanical spraying herbicides, closed field weeding.

4, select seeds: soybean seed germination rate and germination potential is high, seedlings neat and healthy, so before sowing should be sick grains, worm-eaten grains, small grains, broken grains and broken petals picked out.

5, seed treatment: soybean commonly used seed 0.1~0.15% phoxim sulfur or 0.7% panacea powder or 0.3~0.4% carbendazim plus thiram or 0.3~0.5% carbendazim plus captan seed dressing.

How to sow soybeans

1. Narrow row and dense sowing method: narrow ridge and increased row, narrow row and dense planting are actively used cultivation methods at home and abroad, changing 60~70 cm to 40~50 cm narrow row and dense planting, generally increasing yield by 10~20%.

2. Equidistant hole sowing method: equidistant hole sowing improves sowing efficiency and quality, plant spacing is suitable after emergence, plant distribution is reasonable, individual growth is balanced, and general yield is about 10% higher than drill sowing.

3. Double-strip sowing method: Double-strip sowing method is to use mechanical flat sowing on the basis of deep ploughing and fine soil preparation, and combine intertillage and ridging after sowing.

4. Precision sowing method: plowing stubble on the basis of autumn ploughing or ridging, sowing single seed, double seed or ridging on the original ridge with precision sowing machine or improved harrow.

5. Original ridge sowing method: In order to prevent soil moisture from running, sowing on the original ridge is adopted, which has the important role of drought resistance, moisture preservation and seedling preservation, as well as the advantages of improving ground temperature and eliminating weeds.