Cucumber plants grow too busy
According to a phone call from Guo Mengzhen Hu Haiming from Yandu District, Yancheng City, his 2-3 acres of cucumber vines have been 1.7 meters long. Among them, 70%-80% of the melons in the middle of the plant are yellow and fall off. Only the lower part has A small amount of melon can grow normally. It is understood that plants tend to be prosperous and there are downy mildew spots on a few leaves. He asked why cucumbers could not sit melons. An expert from the College of Horticulture, Nanjing Agricultural University, said in an interview with related reporters that after the formation of a cucumber, young cucumbers can no longer grow into commercial melons, gradually turning green and yellow, and falling off is a melon phenomenon. It is understood that the mellow cucumbers are mostly concentrated in the early or late stages of cucumber melons. There are many causes of cucumber melons, mainly high temperature drying in the shed, aging leaves, or poor weather, improper management, reduced photosynthesis in the leaves; excessive application of fertilizers, lack of water causes damage to the roots; soil moisture but the temperature and temperature bias The occurrence of roots in the lower part of the roots; soil solution on the growth of the plant, weakened absorption capacity of the roots, so that the plant can not provide the nutrients required for the normal growth and development of melons and the emergence of melons. The weaker varieties of parthenocarpy, low temperature or high temperature hinder fertilization, prone to melons. There are many reasons for causing cucumber melons to be cured. Specific measures should be taken to prevent and control them. According to Hu Haiming, the growth of cucumber plants is prosperous. According to expert analysis, it is likely that excessive application of fertilizer and water, especially the excessive use of available nitrogen fertilizers, results in lengthy plants, resulting in unbalanced vegetative growth and reproductive growth, resulting in the inability of nutrients to be supplied to melon strips. Melon. In addition, there were downy mildew spots on the leaves of the plants, which resulted in the weakened photosynthesis of the leaves, reduced accumulation of photosynthetic products, and increased melons. For the melons caused by the above reasons, we can strengthen the management of temperature and humidity, try to enhance the photosynthesis ability of leaves, and spray foliar fertilizer. At the same time, Fumei Shuang, metalaxyl, chlorothalonil and other agents should be used to control downy mildew in order to protect the leaves and enhance the photosynthesis ability of the leaves.
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