(1) Over-application of nitrogen fertilizer. (2) Low-temperature illumination. In particular, on continuous cloudy days, when the roots of melons are damaged or their activities are impaired, the absorbed water and nutrients are less, and melons grow extremely slowly, accumulating more bittersin in roots and melons. Bitter melons occur on root melons. (3) Caused by high temperature and drought. Melon cultivated in spring sorghum enters the late spring high temperature period, or due to the high soil moisture, the absorption function of the root weakens, the assimilation force decreases, and at night the temperature is too high, the melon grows slowly, and more bitter elements are accumulated in the melon. Form bitter melons. (4) Improper use of sitting guayan can also produce bitter gourd. To eliminate bitter melon should start from the following aspects: First, the use of greenhouse good heat insulation properties; Second, the release of reduced strains, appropriate thinning, comprehensive improvement of light conditions between plants; Third, the scientific application of fertilizers, especially not excessive nitrogen application Fertilizer; The fourth is to promote the hormones in the roots through cooling, water control, and watering when the plants enter the aging period, and rejuvenate the roots early; Fifth, enter the high temperature season, the management temperature should not be high, especially to prevent the night temperature is too high, not suitable for watering is too big. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone
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