Zucchini anti-deformity
Poor pollination, uneven distribution of pollen, so that the lack of pollination was a depression.
Excessively high or low temperatures can affect the photosynthetic efficiency, making nutrient production less effective and inhibiting fruit development.
The lack of self female flowers or bisexual flowers form a deformed fruit.
In order to promote precociously cultivated zucchini multi-knot high-quality fruit, in the cultivation measures, we must create a good ecological environment and improve management techniques.
Meet fertilizer requirements. Zucchini needs more fertilizer, strong suction fertility, more drought, but the fruit needs more water during the expansion period, to keep the soil moist. Therefore, one must apply enough base fertilizer, and the other must use nitrogen and potassium in combination with timely fertilizer. Each batch of melon should be topdressed once after harvesting. Basal fertilizer in high-quality farmhouse fertilizer 5000 kg per mu, cake fertilizer 300 kg, 100 kg of phosphate fertilizer, 50 kg of potassium fertilizer, while applying zinc fertilizer and magnesium fertilizer. In the early stage of field water, dry control is the main method, and during the result period, we must maintain moist management.
Pay attention to regulating temperature. Premature cultivation uses plastic film greenhouses to increase temperature and keep warm. The adaptable temperature range of the summer cucurbit is 15 to 38°C, and the optimum temperature range for growth and development is 18 to 25°C: the adaptable soil temperature is 12 to 35°C, and the suitable soil temperature is 15 to 25°C. Therefore, it is necessary to adjust the time for uncovering the film according to the climate change situation, and in particular to change the temperature management according to the requirements of the temperature, which is more conducive to the accumulation of nutrients and the reduction of consumption.
Artificial pollination. Every day from 8 to 10 o'clock in the morning when the male flower is at its peak, male flowers should be taken and their corollas should be dropped. The anthers should be gently cast on the stigma of the female flowers. A male flower can grant 3 female flowers. When the humidity is high, the pollination effect is higher. it is good. Pollination should be imparted, to be implemented. In order to protect the fruit, but also with the hormone treatment, available 20 ~ 30 mg / l 2,4-D in the morning of flowering with a brush pen liquid applied to the pedicel or ovary, but be careful not to let the liquid spill on the stems and leaves In order to prevent the occurrence of phytotoxicity; 40 ~ 50 mg / liter tomato spirit can also be sprayed on the female stigma head.
Author unit: Harbin Farmers' Burden Inspection Institute
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