Late autumn zucchini planting technology
First, the variety selection
The temperature in autumn is high, the rainfall is high, and the pests and diseases are serious. Therefore, when selecting the varieties, we must choose varieties with high temperature resistance, good antiviral disease, easy fruit setting and high yield, such as: jasper, blue wave, brother and other varieties.
Second, the appropriate sowing
In autumn, the growth season suitable for zucchini is short, the temperature in the early stage is high, the humidity is large, the plants are prone to be long and infected, and the temperature in the late stage drops rapidly, which is unfavorable for the growth of melon. Therefore, the appropriate sowing date is the key to high yield. Therefore, it is generally broadcast live on the ridge side in early August. Seeds should be laid flat when planted, about 2 cm deep. Planted by size, with a line spacing of 1 meter, a small row spacing of 0.5 meters, a plant spacing of 50 centimeters, a ditch planting, a ditch free, 1000 seedlings per acre.
Third, field management
1. Temperature management: the temperature in the early stage is too high. When the temperature exceeds 30 degrees, the shade net can be covered on the greenhouse. The temperature will decrease rapidly in the later stage. When the night temperature is lower than 15 degrees, the film will be covered to make the temperature inside the shed. Keep between 15-30 degrees.
2, water and fertilizer management: Western zucchini is easy to grow, before the fruit, generally do not water. When more than 70% of the plants in the field have already been meloned, and the root melon grows to about 5 cm, pour the water once, and apply 10 kg of three-element compound fertilizer. For each harvest in the future, it is necessary to combine watering and apply 15 kg of three-element compound fertilizer. In the later period, as the weather turns cold, watering and topdressing should be carried out in the sunny morning.
3, chemical control Wang: seedling temperature is high, easy to grow long, to use chemical control, can be sprayed once in the 1 leaf, 3 leaf stage 50% of chlormequat 2500 times liquid, can effectively prevent the length, promote female flower differentiation.
4, preserved fruit: when the female flower of the young melon is open, 50-100 mg / kg of 2.4-D or 100 mg / kg of anti-fallin can be applied to the stigma of the female flower and the base of the corolla, adding 0.1% to the solution Pyrimethanil wettable powder can prevent the formation of melon and prevent gray mold.
Fourth, timely harvest
10-12 days after flowering, when the root melon reaches 250g, it can be harvested.
V. Pest Control
The main pests and diseases of zucchini are B. tabaci and virus disease, and the virus disease is caused by B. tabaci. The most effective way to control these two pests is to use 60% benzepetchin suspension seed coating before planting. , or 70% thiamethoxam seed treatment agent + 2.5% flavonoids suspension seed coating agent and other agents, according to the ratio of 1:300 seed dressing, can effectively prevent the damage of tobacco whitefly and the occurrence of viral diseases, the effective period is up to 80 days.
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