Zucchini produces malformed fruit for the following reasons: water and fertilizer are insufficient, and it is easy to form a long-nosed melon in the early stage of sitting melon, and it is easy to form a thin waist melon in the middle stage. However, in the medium term, the fertilizer is too strong and it is easy to form a big belly.
Poor pollination, uneven distribution of pollen, and the area where the pollination is insufficient is concave.
Too high or too low temperature will affect the photosynthetic efficiency, making the production of nutrients insufficient and inhibiting fruit development.
The female flower lacks or the bisexual flower forms the fruit, causing deformity.
In order to promote the early-maturing cultivation of zucchini with high-quality fruit, in the cultivation measures, it is necessary to create a good ecological environment and improve management techniques. Meet the fertilizer and water requirements. Zucchini requires more fertilizer, stronger fertility, and more drought-tolerant, but the fruit needs more water during the expansion period, to keep the soil moist. Therefore, one must apply the base fertilizer, the second should be nitrogen and potassium combined with timely topdressing, each batch of melon should be topdressed after mining. In the base fertilizer, 5000 kg of high-quality farmyard manure, 300 kg of cake fertilizer, 100 kg of phosphate fertilizer and 50 kg of potash are applied per mu, and zinc fertilizer and magnesium fertilizer are applied at the same time. The field moisture in the early stage is mainly dry control, and the results should be kept moist.
The adaptor temperature range of the gourd is 15-38 °C, the optimum temperature range for growth and development is 18-25 °C; the soil temperature is 12-35 °C, and the suitable soil temperature is 15--25 °C. Therefore, according to the climate change situation, it is necessary to adjust the time of uncovering the film, especially to change the temperature requirements for temperature management, which is more conducive to accumulating nutrients and reducing consumption.
Perform artificial pollination. Every day from 8 to 10 am, the peak period of male flowers is open. The male flowers should be picked and the corolla should be removed. The anthers should be gently cast on the stigma of the female flowers. One male flower can give three female flowers, and the pollination effect is obtained when the air humidity is high. better. Pollination should be evenly distributed and must be implemented. In order to preserve the fruit, it can also be combined with hormone treatment. It can be applied to the peduncle or ovary with a brush sputum on the morning of flowering in the morning of 20--30 mg/L 2,4-D, but be careful not to let the liquid spill onto the stems and leaves. In order to prevent phytotoxicity; can also be sprayed on the head of the female flower with 40--50 mg / liter of tomato spirit.
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