High-yield cultivation techniques of mustard in winter
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1. Determination of sowing date: Although the adaptability of Brassica juncea is broad, it is resistant to heat and cold, but the temperature is too low: the growth is slow, the temperature is too high, the pests and diseases are serious, and it is easy to grow vegetables and the yield is low. The product rate is low. Based on years of observation. The best sowing date for my county is the most appropriate around the National Day (ie August 15th to August 20th lunar calendar) because the seeds are sown before and after National Day. Planted at the beginning of October at the beginning of the month, when the temperature is still high, it is conducive to growth, and it enters from the end of November to mid-December. The season is in the period of light snow and heavy snowfall. The temperature is relatively low. This is very beneficial to the decrepitude of the mustard, and at the same time the temperature is low and the soft rot is The occurrence of downy mildew reduces the application of pesticides and reduces pesticide residues in vegetables.
2. Management of Seedling Stage: The planting area must be finely grounded with 500 kg of farmyard manure per mu, 40 M2 per mu of farmland, and 13 yuan of imported compound fertilizer mixture during nursery. Once, the first use of 0.6% concentration, the second time with 1% concentration. When the seedling age reaches 28-30 days, it can be transplanted when there are 4--5 true leaves.
3. Planting: Planting Daejeon 1.6 m from the ditch from the sorghum preparation site, the ditch width of 40 cm, when the site preparation Mushi manure 500 kilograms, each seedling 4 lines, plant spacing 25 cm x 40 cm acres planting 4800 to 5000 strains . When planting, try to bring as much soil as possible to promote early life.
4. Daejeon Management: Watering should be continued for 3 consecutive days after planting to facilitate survival. 7 days after planting, topdressing farmyard fertilizer once, the amount of mu is 650---750 kg, every 6-7 days after planting, 5-7 kg of urea per mu, 3-5 kg ​​of ternary imported compound fertilizer Application of 4 --- 5 times, the concentration of diarrhea gradually increased, the first and second application of fertilizer and leaching of urea and compound fertilizer before urine, which is conducive to the growth of the root system. When the fourth round of fertilizer is applied, 13 kilograms of potassium fertilizer is added to the acre to spread it.
5. Pest control: During the period of nursery and field development, attention should be paid to the control of Plutella xylostella, Spodoptera litura, yellow fleas, rapeseed meal, soft rot, and downy mildew. In particular, the disease in Daejeon should be dominated by prevention and prevention and control. Once after planting, leaching and control once, the key to prevention and control within 30 days after planting. Pharmacists may choose to use insecticidal double, insect light, phoxim, dichlorvos, Sheng Zhi Feng fungicide 1#, Raidavier, green milk copper, OS-Sterling and so on.