Zucchini does not expand melon is caused by what?

Zucchini does not expand melon is caused by what? How to prevent and cure it? Zucchini is caused by low temperature and low light. There are more continuous overcast days, continuous low temperature and low light in the greenhouse, slow plant growth and development, hindered the synthesis and transport of nutrients, less photosynthates produced by photosynthesis in the daytime, and insufficient supply of nutrients; and low temperature can cause cells to stop elongating, resulting in unexpanded melons or melons. In this regard, it can be solved by heat preservation and light enhancement, that is, in sunny days, we should pull the shed early and cover it late to prolong the light time, on cloudy and rainy days, we should also properly open the grass curtain to penetrate light, and wipe the greenhouse film in time to increase the light intensity of vegetables and prolong the light time. The second is caused by the growth of plants. If the zucchini rosette grows vigorously, the nutrition produced by the plant provides a large amount of nutrition for stem and leaf growth, and the fruit does not expand due to lack of nutrition. Because the nutrition produced by the plant every day is certain, if it is consumed by the vegetative growth, it is bound to affect the reproductive growth. Therefore, remind vegetable farmers: from the seedling stage should be done to control the growth of the work, in addition to using hormones to control, but also from fertilizer, water, temperature and other aspects of regulation. Zucchini has very strict temperature requirements, so it is advisable to keep it at 18 ℃ 22 ℃ during the day and 13 ℃ at night. If the temperature is too high, especially at night, it is easy to grow. In addition, on the basis of sufficient base fertilizer, do not apply fertilizer with excessive nitrogen content after slow seedling, because fertilizer with high nitrogen content is easy to cause plant overgrowth, and fertilizer with high potassium can be applied properly during fruit expansion period. In addition, when watering the shed, avoid flooding, should be watered interlaced, only fixed planting line can be. The small water should be watered frequently, usually half the ditch water at a time. Once again, it is caused by the high concentration of guar medicine. The high concentration of melon medicine will inhibit the expansion of melon strips. The concentration of gourd should change with the change of temperature, the high concentration of temperature should be low, and the concentration of low temperature should be high. If the zucchini is not swollen due to the high concentration of zucchini, the amount of water should be increased appropriately, and at the same time gibberellin or cytokinin mixed with brassine should be used to relieve it. Click to get more zucchini planting techniques click to get more vegetable planting techniques