Zucchini planting technology
Rational colonization of zucchini: general seedling age 25-30 days, seedlings grow to 2 leaves 1 heart or 3 leaves 1 heart. The standard of strong seedlings is that the seedlings are short, the leaves are short and the roots are developed.
When planting, the row spacing is 60-65 cm, the small row spacing is 50-55 cm, and the plant spacing is 40 cm. When planting, firstly divide the shallow ditch in the north-south direction of the shed according to the row spacing. The ditch depth is 3-5 cm. Then, according to the plant spacing, the melon seedlings are placed in the shallow ditch, and the soil on both sides is made into a high ridge with a ridge, and the ridge height is 20 cm. It is 30 cm wide and then covered with mulch to facilitate heat preservation, prevent evaporation of water, reduce humidity in the shed, reduce disease, and promote healthy growth of seedlings.
Environmental regulation: During the planting period, the shed should maintain a high temperature, 25 ° C - 30 ° C during the day, 18 ° C - 20 ° C during the night; appropriate cooling after slow seedling, 25 ° C during the day, 12 ° C - 15 ° C during the night; Appropriately increase the temperature, 25 °C - 28 °C during the day, 15 °C during the night; during the cold winter, the temperature at noon should be maintained at 28 °C - 30 °C to prevent the night temperature from being too low. After the cold winter, increase the ventilation and restore the temperature management standards before the winter.
The adjustment of humidity and gas should be carried out in conjunction with the management of temperature. Ventilation and cooling, the use of no drip film, covering the film when planting, etc., can significantly reduce the humidity inside the shed. The timely discharge of harmful gases in the shed is conducive to the exchange of carbon dioxide outside the shed.
Fertilizer management: After the planting of the zucchini, the water is poured into the water, and the water is controlled to the flowering fruit; after the first melon is seated, the first water is poured, and the subsequent water management is carried out according to the principle of watering the flowers without pouring melon; In the cold winter season, water should be poured or watered as little as possible to prevent lowering the ground temperature. When the growth of zucchini grows, it should be topdressed, with nitrogen, phosphorus, potassium, and more potassium fertilizer. 300 hectares of diammonium phosphate and 400 kilograms of potassium sulfate per hectare, and the topdressing and urea alternately.
Pruning: In the middle and late growth stages, stems grow on the ground. In order to fully accept the sunlight, measures must be taken to remove the disease, residual, old leaves and side buds and tendrils in order to avoid disease and excessive consumption of nutrients.
Pest control: prevention and treatment of downy mildew, can be used in the early stage of the disease with 45% chlorothalonil aerosol to burn fog; can also be used 75% chlorothalonil wettable powder 600 times liquid for prevention and treatment.
Prevention and treatment of viral diseases: It is necessary to spray cockroaches during the seedling stage, and spray 1.5% of the phytopathogenic 1000 times solution at the beginning of the disease, spray once every 5-7 days, and spray two or three times.
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