When planting Chinese cabbage in summer, there will often be no leaf rolling or unintentional phenomenon. This is due to the high temperature in summer, the heavy rain, the high humidity, and the serious occurrence of pests and diseases. In addition, improper fertilization, excessive nitrogen fertilizer, insufficient phosphorus and potassium fertilizer, and uneven water supply are also the main reasons for the cultivation of Chinese cabbage in summer. Only by adopting the following comprehensive technical measures to strengthen management can the cabbage package be good, the vegetable ball is strong, the output is high, and the quality is good.
First, reasonable fertilization.
In the period of cabbage cabbage, the application of phosphorus and potassium fertilizers and organic fertilizers should be applied to control the nitrogen fertilizer to inhibit its madness.
Second, scientific water supply.
In the period of cabbage cabbage, the water must be kept even and adequately supplied. Avoid it when it is too long. When it is dry, it is necessary to keep the soil moist.
Third, the prevention of pests and diseases.
During the cabbage ball-binding, it is necessary to pay attention to the inspection of the leaves and find that there are pests and diseases, that is, to spray 1500 times of liquid sensation ammonium mixed solution 2-3 times, or 1500 times liquid lysine, 1000 times liquid can kill A mixed solution is obtained for control. If the soft rot occurs seriously, it should also be added with 5000 times liquid agricultural streptomycin.
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