I. Variety: Xia You, Xia Yang, Xia Feng II, Soil Preparation: It is best to use non-cruciferous vegetable fields, plowing for over 7 days, applying 3000 kg of organic fertilizer per acre, or organic fertilizer 50- 70 kg. In order to facilitate drainage, cultivation must be conducted in high ridges, which can be broadcast live or transplanted. Third, sowing: The use of sowing method, with 50-70 grams per acre, planting line spacing 30*55CM, 4000 points per acre or more, the use of shade nets to cover the best cultivation. Fourth, field management: 1, water management: high-temperature water in the summer scattered quickly lost, should keep the soil moist in the field, to prevent sudden Hugan Huo, often pay attention to watering in hot and dry weather, generally better in the evening or early morning watering. Accumulate water immediately after rain to prevent flooding or cause disease. 2, fertilizer application: in principle, do not top-dressing, if the base fertilizer is insufficient, it should be in the rosette period and the heart of the period, combined with watering per acre topdressing urea or available nitrogen fertilizer 20 kg. 3, shade net coverage principles: a cover and three three-exposure cover, that is, from sowing to seedlings to be covered continuously; cover during the day, evening exposing, sunny cover, cloudy exposing, cover before the rain, rain exposed. 4. Disease and Pest Control: Summer cabbage is mainly used to control downy mildew, soft rot, and viral diseases. It is mainly used for prevention and control of 40% B-aluminophosphate, 58% thiazole manganese zinc, and 50% DT. The pests mainly include aphids, cabbage caterpillars, and noctuid pests, and are controlled by Suppository and Cypermethrin. V. Timely Harvest: The ball day of summer cabbage happens to be in high temperature and rainy season. Plants are easily infected and the leaf ball is also easy to crack. Therefore, when the Chinese cabbage is more than 70%, it should be collected in batches to reduce losses.
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