First, the cause of malformed fruit in zucchini:
1. The lack of water and fertilizer, sitting in the early stage of melon water and fertilizer is easy to form a sharp mouth melon, the middle of the fertilizer and water is easy to form thin waist melon, the late fertilizer and water deficiencies are easy to form slender pods 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 photosynthetic efficiency will be affected and the nutrients produced will be insufficient to inhibit fruit development.
Second, prevention and control measures:
1. Meet fertilizer requirements. Zucchini need more fertilizer, strong fertilizer absorption capacity, one should apply the base fertilizer; two nitrogen and potassium fertilizer with timely follow-up, each picking melon should be topdressing once. 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, the male flower blooms during the peak period. Male flowers must be removed in time to go to their corolla. The anthers should be gently cast on the stigma of the female flower. A male flower can give 3 female flowers. Pollination is better when the air humidity is high. .
3. Pay attention to regulating temperature. The optimal temperature for the growth and development of summer cucurbits is 18-25°C. It is necessary to adjust the time for uncovering the film according to the climate change.
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