1. The planting season can be planted in spring, summer and autumn, sowing in spring for 2 to 4 months, summer sowing for 5 to 6 months, and autumn sowing for 9 to 11 months. 2, soil preparation and sowing digging sunburn, Shizu base fertilizer. The base fertilizer is mainly composed of farmyard manure with full maturity, 3000 kg per mu, before sowing, the fertilizer and soil are fully mixed and finely crushed and leveled to be sown. 0.3 ~ 0.5 kg per acre sowing, after sowing into the human and animal dung for cover fertilizer, to wet the soil, not compacted conditions sowing, sowing with straw or shading net moisturizing, and irrigated, after sowing 8- 10 days to emerge. 3, the density of planting leek seedlings weak, poor resistance, slow growth, early and late watering, with the principle of less water pouring, pull out weak seedlings and over seedlings when the seedlings, chase a clear manure water. When the seedlings have 4 to 5 leaves, they can be planted with a spacing of 2 to 5 centimeters. 4. After the field management, the live seedlings will chase the nitrogen fertilizer 1-2 times, and the urea will top-up 35 kg per acre. The top dressing should be combined with irrigation to keep the soil moist and ban the use of pesticides 10-12 days before harvest. 5. Downy mildew disease occurs in pest control and prevention and control agents can be used: mancozeb, zeocin and so on. Insect pests, including Spodoptera exigua, aphids, and control agents were eliminated and imidacloprid.
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