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1、加强保温补温。减少进出棚次数是为减少和防止冷空气入侵的机会。夜间最低温度应保持在8℃以上,否则应采取明火补温。 2、争取光照。在上午11点至下午3点揭草帘争取散射光,不能怕降温不揭帘。 3、降底棚内湿度。可采取地膜、小拱棚覆盖,降低土壤水分蒸发,也可适当放风以降低湿度。 4、减少营养消耗。勤摘瓜,如遇结瓜盛期可每天都摘,或者摘除半成品以上的瓜条,以减少养分向瓜条输送,保证植株正常养分需求。 5、防治病害漫延。连阴天放风时间少,棚内湿度高,菜生长弱,病害极易发生和漫延。如不抓
1, to enhance insulation temperature. Reduce the number of sheds is to reduce and prevent cold air intrusion opportunities. Night minimum temperature should be maintained at 8 ℃ above, or should be open flame heat. 2, for lighting. In the morning 11 o’clock in the afternoon to 3 o’clock to hit the straw curtain for scattered light, can not be afraid of cooling does not expose the curtain. 3, down the shed humidity. Can take the film, a small shed cover, reduce soil moisture evaporation, but also appropriate to reduce the humidity of the wind. 4, reduce nutrient consumption. Diligent pick melon, pick the peak in case of lump every day, pick, or remove the semi-finished products above the melon, in order to reduce nutrient delivery to the melon, to ensure the normal nutrient needs of plants. 5, control disease spread. Even the cloudy days of less time, shed humidity, vegetable growth is weak, the disease can easily occur and spread. If not caught