When will autumn soybeans be sown?

Soybeans can be planted in spring, summer and autumn. Autumn soybeans are soybeans planted in autumn. So when will autumn soybeans be sown?

When will autumn soybeans be sown?

Autumn soybeans are generally best sown from mid-July to early August, and the growth period is 70-80 days. They can be sown early enough to ensure that they bloom before and after White Dew.

Second, pre-broadcast preparation work

1. Soil preparation before sowing: soil preparation before sowing includes soil tillage, raking, pressing, etc., and different soil preparation techniques are different before sowing, such as ploughing, ridge cultivation, raking stubble, deep loosening and so on.

2. Irrigation before sowing: for the plots with poor soil moisture before sowing, those with irrigation conditions can be irrigated once 1-2 days before sowing, soaking the soil to facilitate seed germination after sowing.

3. Closed weeding: if the large area cultivation of soybeans is not managed in time, the weeds will be seriously harmed. Herbicides are often sprayed mechanically before sowing to control weeds in the field.

4. selected seeds: the germination rate and germination potential of improved varieties of soybeans are high, and the seedlings are neat and strong, so diseased grains, worm-eaten grains, small grains, blighted grains and broken seeds should be picked out before sowing.

5, seed treatment: soybean commonly used seed amount of 0.1-0.5% octane or 0.7% elixir powder or 0.3-0.4% carbendazim plus thiram or 0.3-0.5% carbendazim plus carbendazim.

Third, sowing method

1. Narrow row dense sowing method: narrowing ridge and increasing row and narrow row dense planting are active cultivation methods at home and abroad, changing 60-70 cm to 40-50 cm narrow-row dense planting, generally increasing production by 10% to 20%.

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

3. Double-strip sowing method: double-strip sowing method adopts mechanical flat sowing on the basis of deep turning fine soil preparation or raking stubble fine soil preparation, combined with mid-tillage and ridging after sowing.

4. Precision point sowing method: on the basis of turning and raking or ridging in autumn, clean the stubble, and use precision sowing machine or improved rake single grain, double grain flat sowing or ridge sowing on the original ridge.

5. Original ridge sowing method: in order to prevent soil moisture loss, sowing on the original ridge stubble plays an important role in drought resistance, soil moisture conservation, seedling conservation, as well as raising ground temperature and eliminating weeds.

The planting time of autumn soybeans should be determined according to the local situation and can be sown early as appropriate.