High-yield cultivation technology and field management of mustard in autumn

1. Cultivation season

Autumn planting is covered, seedlings can be planted from July 20-25, and live broadcast can be planted from July 25 to the end of July. It is usually planted in mid-late August and harvested from late October to early November.

Site selection and site preparation

Choose neutral, convenient drainage and irrigation, and good water quality for planting. Precise land preparation, build deep trenches with high ridges and wide (continuous ditch) 1.2-1.3 meters. When preparing the land, 1500-2000 kg of organic fertilizers and 30-40 kg of nitrogen, phosphorus, and potassium compound fertilizers are used as base fertilizer.

Third, sowing seedlings

There are two ways of sowing mustard seed: one is seedling transplanting, the seed volume is 25-40 grams per acre, and a seedbed of 30 square meters is needed; the other is live broadcasting, sowing 2-5 seeds per hole, Lay the cover to prevent rain washout or sun exposure. * Using sunshade net cover, strive to broadcast the whole seedlings, and do field management work such as thinning, watering and weeding in time.

4. Transplantation

Double-row planting with a row spacing of 65 cm, plant spacing of 25 cm, and about 4,000 plants per mu. The seedlings cultivated by the method of seedling transplanting should be transplanted with soil, and the dead seedlings, weak seedlings and diseased seedlings should be eliminated. Apply 0.5% urea aqueous solution in time after planting to improve survival rate and speed up early onset.

V. Field Management

1 Timely check seedlings and make up shortfalls: After planting, if you encounter high temperature and arid weather, diseased seedlings, dead seedlings, and dead seedlings are prone to occur, and you should make up for them in a timely manner and strive to fully balance the early onset.

2 Strengthen fertilizer and water management: As the mustard mustard grows faster after turning green, it needs a constant supply of fertilizer and water. Fertilize every 10 days or so before planting (planting to planting), and apply 750-1000 kg of human feces per acre, or 8-10 kg of ammonium bicarbonate plus 8-10 kg of superphosphate over water. Apply, apply 3-4 times in a row. When the heart-wrapped mustard heart rate reaches about 5%, the heart-boiled fertilizer can be re-applied, and 20-30 kg of urea and 15 kg of potassium chloride are dissolved in water per acre and sprayed. For fast-growing and low-fertility fields, 15-20 kg of ammonium bicarbonate and calcium superphosphate can be poured in water every 7-10 days.

Six, pest control

When sowing, use 50% phoxim 1000 times solution to control underground pests. After emergence and before harvest, it is mainly used to control green insects, diamondback moth, Spodoptera litura, etc. It is possible to use 20% fenvalerate 2000 times solution plus 3 to 5% sinzik mobao 1000-1200 times solution, or use 5% acetaminophen 1500 Double solution, or use 0.6% insecticidal 1500-2000 times solution for control. In the early stage of enveloping, spray 200 mg / kg agricultural streptomycin to prevent soft rot, spray once every 7-10 days, and spray 2-3 times.

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