Causes and countermeasures of summer Chinese Cabbage's lack of inclusion

Cabbage is one of the indispensable vegetables in people's lives. In recent years, as the growers have used the Dongfu plastic greenhouses to produce Chinese Cabbage during the leisure period, it not only alleviated the vulancy, but also achieved the annual supply of Chinese cabbage. Going public, and because of its fast growth and short cycle, the economic benefits are considerable. However, with the changes in some cultivation methods and management methods, there have been a large number of phenomena that are not covered. What are the reasons that make Chinese cabbage uninfluenced? What measures should be taken to overcome them? First, the Chinese cabbage does not worry about the reasons for the production of 1, improper fertilization: due to high summer temperatures, many growers in order to promote the rapid growth of cabbage, blindly partial application of available nitrogen fertilizer, without paying attention to the application of phosphorus and potassium fertilizer, thus Caused too much nitrogen fertilizer, phosphorus and potassium fertilizer deficiency, making cabbage not wrapped or loose loose heart. 2. Uneven supply of water: Due to the high temperature in summer, Chinese cabbage grows rapidly and requires a large amount of water. If it cannot be watered in time and evenly watered, it is very easy to cause non-heart-packing of Chinese cabbage. 3, rain, humidity: summer due to frequent rainfall, so that the humidity of the cabbage field has been greater, affecting the growth of Chinese cabbage, but also easy to produce without worry. 4. Improper control of pests and diseases: Insect pests in summer cabbage occur more seriously, especially soft rot disease, dry heart disease, downy mildew, powdery mildew, viral diseases, aphids, cabbage caterpillars, etc. The occurrence of these diseases and pests has affected the extent to a certain extent. The growth of Chinese cabbage vegetative bodies can cause the Chinese cabbage to be unwrapped. Second, the response measures 1, a reasonable fertilization: In cabbage Chinese cabbage, the focus should be on increasing phosphorus and potassium fertilizers and organic fertilizers to control nitrogen fertilizer. To suppress its growth. Generally, in the early stage of ball-bearing and the mid-balloon stage, potassium dihydrogen phosphate or ternary compound fertilizer should be applied once, each applying 10-15 kilograms per acre, and flushing with water. 2. Scientific watering: In Chinese cabbage, the water must be kept evenly and adequately supplied. Do not use too much time. When wet, it is appropriate to keep the soil moist. You can pour water 1 time in the morning and in the evening. Remember not to water at noon, at the same time, we must also cover the surface with weeds, grass thickness 3-5 cm, in order to reduce moisture loss, keep the soil moist and maintain even water. 3, pay attention to the timely prevention and control of pests: during the Chinese cabbage wrapped in the heart during the ball, we must pay attention to the regular inspection of the leaves and found that downy mildew, soft rot and other diseases, when in the early onset with 40% phosphine aluminum wettable powder 200-300 times liquid, 50% methosulfate 500-600 times or 50% methicone wettable powder 600-800 times, 7-8 days spray 1, continuous control 2-3 times. 4, timely spraying foliar fertilizer, promote the heart: in Chinese cabbage wrapped ball period, every 7-10 days can be sprayed once 800 times liquid vegetable special high-organic active organic fertilizer humic acid or 0.3% urea and 0.3% potassium dihydrogen phosphate mixture, even spray 2-3 times, evenly sprayed wet leaves, can effectively promote the cabbage's heart. 5, set the shade net: after the sowing of Cabbage Cabbage Cabbage sowing, it is best to set in the shed on the front slope of silver or black shade net, can significantly reduce the temperature within the shed, for the Chinese cabbage has a certain heart the benefits of.

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