I. Scope This standard specifies the requirements for production technology measures for green food cabbage. This standard applies to the production of Chinese green food cabbage. Second, production technology measures (A), environmental conditions in production areas 1, the environmental conditions of production areas in line with green food, vegetable production environment, environmental conditions 2, soil conditions: flat terrain, drainage and irrigation is convenient, deep soil layer, suitable soil structure, physical and chemical properties of Silty loam, loam and light clay are suitable, and soil fertility is higher. (B), cultivation measures 1, the choice of species selection of disease resistance, high quality and high yield, strong resistance, wide adaptability, good variety of goods. 2. Site preparation adopts sorghum cultivation and mulching, which facilitates drainage and irrigation and reduces pests and diseases. 3. Sowing according to weather conditions and species characteristics to select the appropriate sowing date, autumn cabbage generally sowing in late summer and early autumn. 4, field management (1) Dianmiao Dingmiao: After emergence and time seedlings, 7 leaves - 8 leaves when the seedlings. (2) Cultivating and weeding: timely cultivating and weeding after thinning, and the last cultivating before mulching. (3) Reasonable watering: timely watering after sowing to ensure seedlings strong seedlings; watering after planting or replanting to promote returning seedlings; watering at the beginning of rosettes to promote hair trees; Water control promotes the heart. (C), fertilization 1, fertilization principle: In accordance with the combination of organic and inorganic, basal and top dressing combined with the principle of balanced fertilization. 2. Basal fertilizer: The application amount of high-quality organic fertilizer per mu is not less than 3,000 kg. For 30-50% of the total amount of nitrogen fertilizer, most of the phosphorus and potassium fertilizers can be applied on the basis of the combination of ploughing and soil preparation. 3. Topdressing: Topdressing is mainly available nitrogen fertilizer. It should be applied in stages of seedling stage, rosette stage, early ball stage, and mid-balloon stage according to soil fertility and production status. Fast-acting nitrogen should not be used within 20 days before harvesting. 4. Industrial waste, municipal waste and sludge should not be used. Organic fertilizers such as manure, animal waste, and urine, which have not been fermented and have not reached a harmless index, should not be used. (IV) Diseases and Insect Pest Control 1. The principle of prevention and control of plant diseases and insect pests is mainly prevention and comprehensive prevention and control, priority is given to agricultural control and physical control, and scientific and rational use of chemical control is used to achieve the purpose of producing safe, high-quality pollution-free Chinese cabbage and should not be used. The state prohibits highly toxic, high residue, high bio-concentration, high-risk pesticides and their mixed pesticides. (2) Agricultural control (1) Choose the resistant (resistant) disease-resistant varieties according to local conditions. (2) Reasonable layout, implementation of rotation and rotation, strengthening of weeding and weeding, cleaning of pastoral areas, and reducing the number of pests and diseases. 3, physical control can be used to avoid the silver gray film or yellow plate (column) to kill locusts. (5) Chemical control 1. Spray 40% phoxim EC on 65g/mu of cabbage caterpillar. 2. Candied fruit can be sprayed with 50% anti-inferiority WP 12g/mu.
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