Greenhouse cucumber harmless cultivation

First, choose the best species. The black-skinned squash with low temperature and strong stress resistance was selected as the rootstock. Cucumber was selected to have strong resistance to disease, low female flowering nodes, low light-tolerance and low-temperature resistance of 90?4, Jinyan, and Miaotong. Second, timely planting seedlings. In order to make the cucumber's melon period coincide with the New Year's Day and the Spring Festival, generally from late September to early October sowing, relying on access to seedlings. Cucumber seeds were sown first, and black-seeded squash were sown after 3 to 4 days. Cotyledons of cucumbers were opened, and the first true leaves were grafted when exposed. Third, fine soil preparation, reuse basal fertilizer. Deeply pour the soil 30 to 40 centimeters, make a small high and low north and south ridges, ridge height 15 centimeters, width 30 centimeters, cover the membrane on ridges and ridges. Ditch the planting on the ridge. Fertilization is dominated by organic fertilizers, with 4,500 kg of decomposed organic fertilizer and 100 kg of ternary compound fertilizer. Fourth, careful management. The number of mu plants is 3600~3800. The grafting interface should be exposed when the plant is planted to prevent the grafted roots from growing on the ground and lose the significance of grafting. After entering the fruiting period, carbon dioxide gas fertilizer is used once a month at 10 kg/mu. Watering is usually done once every 15 days. In the early and middle period, drip irrigation under ridge membranes is used. In the later period, water is used between big rows. Fifth, prevention is the main method to comprehensively prevent and treat pests and diseases. Greenhouse diseases and insect pests are mainly prevention. Use 45% chlorothalonil aerosol to fumigate every 7 days to prevent downy mildew and powdery mildew. If pests and diseases occur, low-toxic and low-residue pesticides should be used. Such as anti-disease, compound flavescens and other agents.

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