Prior to planting spring cucurbit squash, adequate preparations must be made, such as the advance splicing of sheds, fine soil preparation, application of farmyard manure, mulching of plastic film, and pre-planting seedlings. Per mu of sheds, 3,000 kg of high-quality farmyard fertilizers, 16-20 kg of diammonium phosphate, 20-25 kg of cake fertilizer, and 8 kg of potassium sulfate are thoroughly cooked. After the fertilizer is applied, it will be turned deeper. Landing after deep plowing. The width of the ridge is 100 cm and the width of the ditch is 50 cm. Before the planting, a ditch with a depth of 15 cm and a width of 20 cm is opened in the middle of the ridge.
The determination of the planting period can be based on one principle: Only when the minimum temperature in the greenhouse is above 8°C, and the ground temperature is stable above 10~12°C, planting is safer.
Temperature management. Spring greenhouse courgette cultivation outside the initial temperature is still very low in the initial period of planting, in order to promote its rapid seedlings, to increase the temperature after planting, during the day is 28 ~ 30 °C, open the small tuyere than 30 °C, when the temperature is below 20 °C closed Vents. When the beginning of the growth of the leaf marks the end of the seedling period, the temperature can be appropriately reduced. The temperature is controlled at about 25°C during the day and l3~15°C at night. When roots sit and begin to inflate, raise the temperature appropriately. The whole growing period of the spring cucurbit squash cultivation is relatively short, and the growth and development process needs to be accelerated in order to obtain higher yield. After entering the result period, the temperature must be raised, during the day, 25 to 28°C, and at night the temperature is kept at 13 to 15°C. When the outside temperature is stable at around 12~14°C, it can be ventilated overnight.
Topdressing watering. Since the whole growing period of the spring cucurbit cultivars is short, high yields must be ensured. Fertilizers were topped when the roots were swollen, and 450 kg ammonium nitrate was applied per hectare. After entering April, the outside temperature has risen. To produce pollution-free pumpkin products and to reduce the amount of chemical fertilizers, it is possible to use diluted manure water at a rate of about 7,500 kg per hectare and apply it with water. Every time when watering, apply diluted human excrement with water to ensure sufficient nutrients for plant and fruit growth. As a result, the frequency of topdressing and watering should be appropriately increased in order to increase the frequency of harvesting.
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