First, the sowing period

The seeding period is controlled when the average soil temperature is higher than 16°C (or daily average temperature is >10°C). The planting period in Beijing is April 20-May; Henan is from mid-April to late; Northeast is from late May to early June; and Inner Mongolia Plateau is from late June to early July. In the drought-prone areas of northern China where the spring drought is severe and there are no irrigation conditions, it is more appropriate to plant wheat stubble (ie summer sowing).

Second, sowing method

(1) Due to the fact that seeds are too small, seeding has affected the emergence of seedlings. The broadcast is too shallow and easy to be blown away by the wind, and it is also not conducive to taking root and resist drought. When the arable land is well established, press the line to pull the line to step on the seal, use the opener to open the ditch, and then spread the seeds (also can take a bamboo tube, tie the bamboo spacer membrane with a small hole in the iron wire, shake the bamboo tube and slide the seed along the groove), After the seed is placed, cover the soil 2-3 cm gently with your feet. The sowing rate is about 100 grams for 1 mu (thousands weight 0.6-0.9 grams). If the seedlings are transplanted, the seeding rate can be reduced by half. Wheat stubble can also be used in no-till and open-seed sowing methods. Generally, it is not necessary to plow tillage. Because of the rapid growth of grain pods, weeds are quickly suppressed and naturally disappear.

(2) Nursery transplanting is generally conducted 15-20 days earlier to raise seedlings in the nursery. The seedbed is 40 cm deep and filled with 20 centimeters of thick soil. Fill the water first. After the water seeps, spread the seeds evenly and then cover it. A layer of 1.5-2 cm thick fine earth top cover film. When the seedling height is 2 cm in 7 days after sowing, it can be properly uncovered. Note that the seedling temperature should not be higher than 40 °C, so as to avoid burning the seedlings. When the seedling height 10-15 cm when transplanted.

Third, field management

Row spacing 50-70 cm, spacing 15-20 cm, seedling height about 8 cm to seedlings, the best cultivator 2-3 times, in case of long drought, the best irrigation along the ditch once the water, when the seedling height is no longer required 20 cm irrigation. Grain pods have strong drought resistance. As long as they have passed the seedling protection, they generally do not need watering.

Basal fertilizer is mainly based on organic fertilizer, 5000 kg per mu soil miscellaneous fertilizer, due to the most sensitive to nitrogen fertilizer, generally 20 acres of topdressing urea, in two separate production increase is more obvious.

The first time the young crop was castrated was the bud stage, which was the initial stage of flowering. At this time, it was equivalent to 50-70 days after emergence. The plants were about 1.5 meters high. After 40 days, they were cut again for the second time. 30-40 cm.

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