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How to use special fertilizer for Chinese cabbage
Chinese cabbage needs to consume a large amount of nitrogen, phosphorus, potassium and trace elements throughout the growing season. If a farmer's friend makes homemade Chinese cabbage special formula fertilizer in accordance with the following methods, he can not only fully satisfy the needs of the Chinese cabbage plant body for waste, but also help improve it. Anti-adverse disease function, improve product quality, advance time to market, so as to achieve the purpose of increasing production and income. Base fertilizer, fertilizer and rational preparation and efficacy 1. Base fertilizer preparation and selection. Before planting Chinese Cabbage, it is possible to use a sufficient amount of farmyard manure 60 lbs.-100 lbs. per mus (slag, manure, or cow manure, about 4,000 to 5000 kg), or 50 kg of cake fertilizer, and 25 kg of superphosphate. 40 kg, potassium chloride 10 kg; can also be directly used nitrogen, phosphorus, potassium each containing 15% of the three-element compound fertilizer 60 kg -70 kg base fertilizer. Basal fertilizer must be applied before sowing. The preparation according to the above method is time-consuming and can promote the development of Chinese cabbage plant roots, and significantly improve its resistance to stress and disease resistance. 2. Formulation and selection of topdressing. Cabbage top dressing should be based on quick-acting fertilizers. Apply 5 kg of urea (or 5 kg to 10 kg of ammonium sulfate) per acre during the seedling stage; when the Chinese cabbage plants grow to a long growth stage (rosette period), use urea per acre. Kilograms, 15 kg of superphosphate, 15 kg of potassium chloride can be used; during the ball stage, the demand for composting efficiency of Chinese cabbage plants rises significantly. Therefore, 5-6 days before the Chinese cabbage ball and the middle of the ball should be chased. Application of urea 10 kg -15 kg, 10 kg of superphosphate, potassium chloride 15 kg -20 kg. The selection and effectiveness of foliar micronutrients The peasant friends applied the above-mentioned bases and top dressings. If the scientific application of foliar micro fertilizers practical technology, not only can enhance the nutrient absorption and photosynthesis of Chinese cabbage leaves, but also provide a variety of cabbage Trace elements help promote crop growth. Its use and efficacy are: 1. To enhance the leaf greening function and prevent yellow leaf and leaflet diseases. Mu with Yi brand leaf surface fertilizer 100 grams, or lobular enemy leaf fertilizer 80 grams, or Huang Ye Bizhi brand leaf fertilizer 100 grams (the above brand leaf fertilizer can choose one, if the farmer friend is not above The branded foliar fertilizer can be used under the guidance of professional personnel of agricultural resources and other varieties of foliar fertilizers with similar efficacy.) Water 50kg - 70kg Uniformity of plants as a whole at the seedling stage, hair growth stage and mid ball stage of Chinese cabbage Once sprayed, it can enhance the nutrient absorption and transformation functions of Chinese cabbage leaves. It has a good therapeutic effect on physiological barriers and deficiency traits such as yellow leaves, white leaves, leaflets, shrunken leaves, and rolling leaves of Chinese cabbage. 2. Promote plant nutrient growth, help improve product quality. Use 150 grams of potassium dihydrogen phosphate foliar, 50 grams of green Fenwei brand leaf fertilizer, or 10 grams of Yunda 120 brand leaf fertilizer, or 40 grams of pine-green green brand leaf fertilizer - 50 grams, or 150g of zinc sulfate (above, one kind of foliar fertilizer can be used) to add 50kg -70kg of water, and evenly spray the plants once at the seedling stage, hair growth stage and early ball stage of Chinese cabbage, which means that the entire cabbage can be used as a whole. The growth period provides the necessary trace elements. Issues requiring attention. If the rain is applied 12 hours after spraying the above-mentioned foliar fertilizer, it should be re-applied once as described above; the spraying time should be selected after a cloudy day or after 5 p.m. When spraying, the front and back sides of the Chinese cabbage leaf should be uniformly sprayed. Chinese Cabbage can effectively promote root and seedling growth, increase photosynthetic efficiency and plant resistance, increase plant chlorophyll, and significantly improve product quality. During the period, increase production and increase income, the effect is obvious. According to the determination, after applying the above-mentioned special fertilizer for Chinese cabbage, 2,000 to 2,500 kilograms of Chinese cabbage can be harvested per mu.