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Fertilizer management of autumn Chinese cabbage
The seedling stage of Chinese cabbage generally refers from the emergence of seedlings to about eighty-nine true leaves. In this period, the principle of “three waters and seedlings, five waters and fixed trees†should be mastered, that is, the first water should be poured on the day of sowing, and the seedlings should be poured when topping the soil. Water, after pouring out, then water 3 water; in addition, water is poured once in two seedlings and one seedling. Generally, at the time of breaking the heart and after each seedling, topdressing should be carried out, with thin decomposed manure.
After the Chinese cabbage is fixed, from the group to 15 to 16 leaves, it is the lotus period of Chinese cabbage. When the Chinese cabbage begins to grow, it should be applied to the fertilizer. Generally, the high-quality organic manure is applied every 667 square meters. 500 ~ 1000kg or topdressing 10kg of urea, and appropriate increase of phosphorus and potassium fertilizer or plant ash or superphosphate and potassium sulphate. After fertilization, the water was poured once, and then the soil was kept in the soil during the rosette period.
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