The Causes and Control Measures of Malaria Malaria

Autumn and winter loquat courgette sowing seedlings in early September, planting in early October; overwintering loquat courgette in late September to mid-October. At present, the greenhouse zucchini is growing. The water, pollination and temperature management of the zucchini are very important for its growth. If it is not properly managed, it will produce malformed melons, which will greatly affect the yield and quality of the zucchini. Malformed fruit for the following reasons: (1) lack of water and fertilizer, sitting in the early stage of melon and fertilizer is easy to form a sharp mouth melon, medium-term deficiency is easy to form thin waist melons, late lack of easy to form slender melon. However, too much fat in the middle and easy to form a large pot of watermelon. (2) Poor pollination, uneven distribution of pollen, so that the lack of pollination was a depression. (3) If the temperature is too high or too low, the light and efficiency will be affected, which will result in insufficient nutrition and inhibit fruit development.
Prevention measures: (1) Meet the requirements of fertilizer and water. Zucchini needs more fertilizer, strong fertilizer absorption capacity, one must apply enough base fertilizer; two to nitrogen and potassium fertilizer in time with fertilizer, each batch of melon harvested once after fertilizer. In the early stage of the field, the control of dry stems is the main reason, and during the result period, the wet management must be maintained. (2) Conduct artificial pollination. Every day from 8 to 10 am, it is during the open peak period of male flowers. To remove male flowers and go to their corollas, gently apply pollen to the female stigma. A male flower can pollinate 3 female flowers. Pollination is better when the air humidity is high. . (3) Pay attention to regulating temperature. The optimal temperature for growth and development of summer squash is 18-25 degrees, depending on the climate change, the time for uncovering the film

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