Cultivation Techniques of Zucchini Greenhouses Overwintering

No matter whether it is seedling nursery or nutrient seedlings, nutrient soil should be prepared first, which is very important for cultivating strong seedlings. Take 3 fertile pastoral soils that have not been cultivated in 4 years, 1 decomposed circumfertility, add a small amount of ash and sawdust, mix well, sifted, and then make or fill the oysters. When you are ready, you can sow and cover the soil 2 cm thick. After the completion of this process, a small amount of bran mixed with methamidophos should be sprinkled on the surface to prevent underground pests. Afterwards, moisten with a small shed film until it emerges.
The standard for age-appropriate seedlings of zucchini is about 30 days, with 3-4 true leaves, about 10 cm in plant height, 0.5 cm in stem diameter, equal petiole length in degrees centigrade and long blade centigrade in leaves, dark green leaves, and intact cotyledons. The root system is developed.
The temperature during the seedling period is maintained at 20-25°C during the day. If the temperature exceeds 25°C, it should be ventilated and cooled. The nighttime temperature is maintained at 10-15°C, and the lowest temperature should not be lower than 6°C. Night temperature control is too high, seedlings tend to be prolonged, the formation of tall seedlings. At the same time, it is not conducive to female flower differentiation, and the result is late. During this period, we must scientifically control the water properly, and when it appears obvious symptoms of water shortage, we can pour small water. After watering, we should pay attention to ventilation, reduce air humidity, and prevent diseases. In order to prevent the occurrence of diseases such as standing crops and withering, a small amount of wilting and irrigation can be used to irrigate the roots twice. In order to control the disease of the leaves, it can be sprayed once with thiophanate-methyl or chlorothalonil leaves every 7 days. To control the damage of greenhouse whitefly, aphids, cabbage caterpillars, and leafminers to the seedlings, targeted insecticides can be sprayed once every 5-7 days.

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