What season is autumn cucumber planted in Tangshan area?

Scientific fertilization and watering. After the cucumber enters the full flowering stage, it is generally watered every 3-4 days 1 time. A small amount of water is often used for irrigation to avoid flooding. In this way, there can be no drought or waterlogging, less pests and diseases, and the microclimate in the field can be improved by frequent cooling. Water 1 time at ordinary times and fertilize 1 time. Urea 15 ~ 20k g/ mu, properly combined with available phosphorus and potassium fertilizer, has good yield-increasing effect. In case of rainstorm, pay attention to drainage and water it in time after rainstorm. After each heavy rain, combine weeding and shallow turning 1 time. Pay attention to cold and warmth. An agricultural proverb says, "One autumn is cool, three white dew and frost". September is in the solar terms of "White Dew" and "Autumn Equinox". The weather turns from hot to cold, and the temperature drops greatly at night, and the temperature is cool. Therefore, it is necessary to strengthen warmth and cold protection. In early September, autumn cucumber was still in full fruit stage. Several windbreaks were set up in cucumber fields, and fences were set up on the north and west sides to reduce the invasion of dew wind and prevent plants from premature aging. Spraying 0.5% potassium dihydrogen phosphate liquid foliar fertilizer at the same time can prolong the harvest period and increase the later yield. In the middle and late September, autumn cucumber entered the late fruiting stage, and the watering times decreased accordingly. In order to control cucumber downy mildew in time, 58% metalaxyl-manganese-zinc 500 times solution, 600 times solution of Poison Spot Kelu, 64% antivirus alum 800 times solution and 75% chlorothalonil can be used. Pests mainly include greenhouse whitefly, aphid, liriomyza sativae, tea yellow mite and so on. You can use 5000 times the solution of Aktai and 2000-3000 times the solution of Kung Fu Kid EC. Spraying once every 7 days can achieve the control effect. China Organic Agriculture Network