Cultivation Techniques of Vegetables
1. Timely colonization. When planting seedlings to grow 4-5 leaves is appropriate, summer and autumn seedlings no more than 18-22 days, 25-30 days in winter is appropriate. It is advisable to choose loam with rich organic matter and convenient drainage and irrigation, and it is not appropriate to make continuous crops with cruciferous vegetables.
2. Deeply turn the land. Combined application of 2,000 kg organic fertilizer, 30 kg of superphosphate, 15 kg of urea and 30 kg of potassium sulfate as base fertilizer, or 90-120 kg of commercial organic compound fertilizer, or 40-60 kg of ternary compound fertilizer. Mix the soil and fat and make it flat.
3. Fertilizer management. After planting the seedlings, the top dressings were promptly applied to promote the growth of seedlings, and then the cultivator was seeded. After the seedlings are finished, they are topped with fertilizer in time. Usually 5-7 days topdressing liquid fertilizer, first, 2-3 days after the seedlings are planted new roots, 20% human fecal urine can be applied (Topdressing with urea, ammonium sulfate, ammonium bicarbonate and other fertilizers can also be used compound fertilizer Or human excrement, but can not use dregs of human and animal dung), or urea 10 to 40% of human excreta, or apply about 20 kg of binary compound fertilizer or urea; Third, most of the main mantis harvest, the top 40 %-50% of human excreta or nitrogen, phosphorus compound fertilizer or urea 10 kg, to promote the development of lateral condylar. In principle, fertilizer should be topdressed after each harvest. During the whole development period, the soil is kept moist and the soil is too dry. This not only reduces the yield and quality, but also prone to viral diseases. If it is too wet, it is susceptible to soft rot. Before entering the winter, control the fertilizer and water so as to avoid excessive growth and be vulnerable to cold damage.
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