雪前大棚蔬菜管理措施雪前连阴天时,要正常揭开草苫,争取宝贵的散射光,时间掌握在比晴天晚揭早盖各一个小时即可。雪前增施有机肥可以增强土壤热容量,缓冲连阴天热量散失带来的降温,还可以促使根系的耐寒能力提高。雪前适度控水对降低室内空气相对湿度非常重要,同时可制造一个底墒足、表土干的环境。 Snow before the greenhouse vegetable management measures Even before the cloudy snow, it is necessary to open the lawn grass for the precious scattered light, the time mastered in the sunny than the early morning to expose the cover one hour. The application of organic fertilizer before snow can enhance the soil heat capacity, buffer the cooling caused by the loss of heat over the cloudy day, and promote the ability of the root to resist cold. Moderate control of water before snow is very important to reduce the relative humidity of indoor air, and at the same time it can create a bottom soil moisture, topsoil dry environment.