Chinese cabbage high quality and high yield fertilization technology

Chinese chive and Chinese cabbage are first- and second-year herbs that can form leaf balls. The Chinese yam and Chinese cabbage mainly use the leaves as the product organ, and sufficient supply of nitrogen can increase the chlorophyll content, increase the intensity of photosynthesis, and the leaves are dark green and thick, which is conducive to the expansion of outer leaves and the enrichment of leafballs; phosphorus can promote cell division and The differentiation of leaf primordia accelerates the formation of leafballs and promotes root development. Potassium can enhance photosynthesis and promote the production and operation of organic matter in leaves. Chinese leeks and Chinese cabbage are high-demand crops and demand for NPK is very large. According to the determination, for every 1000 kg of leek or cabbage produced, 1.77 kg of nitrogen and 0.81 kg of phosphorus pentoxide should be absorbed from the soil. Potassium oxide 3.72 kg, the ratio is 2.2:1:4.6. In order to ensure the high quality and high yield of leeks and Chinese cabbage, in accordance with the technical requirements for the production of pollution-free vegetables, the following fertilization techniques are proposed for the growth characteristics of leeks and Chinese cabbage and their requirements for fertilizers:
1. The principle of fertilization: mainly organic fertilizer, supplemented by chemical fertilizer; base fertilizer as the main, followed by topdressing.
2, apply enough base fertilizer. Chinese leeks and Chinese cabbage have a fast growth rate and a large amount of growth. It is necessary to apply a large amount of organic fertilizer as a base fertilizer. In general, quality decomposed organic fertilizer 4000-5000kg should be applied per acre, which can be applied, and can also be applied by row spacing. On this basis, it is also necessary to apply 40-50 kg of amaranth and Chinese cabbage special fertilizer per acre to meet the needs of growth and development of Chinese cabbage and Chinese cabbage during the whole growth period.
3, see Miao Qiao Shi fertilizer. First, Shihti Miao Fei. In soils with low fertility, 5 kg per acre of leeks and cabbage special fertilizer are used, and a small amount of seedling fertilizer is applied to promote the growth of seedlings and to develop young seedlings and weak seedlings to strong seedlings. The second is to give a good heart. Chinese cabbage and Chinese cabbage are in a period of vigorous growth. The growth of each plant can reach 75-100 grams per day. It requires timely fertilizer application. It is 15-25kg per acre. This will not only improve the yield and quality of leeks and Chinese cabbage, but also increase the yield of leeks and Chinese cabbage.

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