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改善传统方式提高棚菜效益大棚菜生产目前已在许多地区普及推广，但要提高效益，必须打破传统方式，不断引进国内外新技术。１．选膜：采用聚氯乙烯无滴膜，可以避免普通膜由于蔬菜的呼吸作用而在膜内积累的大量水珠，造成遮光，使透光率保持在９０％以上；采用可控降解地...
Improve the traditional way to improve greenhouse efficiency greenhouse vegetable production has been popularized in many areas, but to improve efficiency, we must break the traditional way, continue to introduce new technologies at home and abroad. 1. Selective film: The use of PVC drip film, can avoid the ordinary film due to the respiration of vegetables in the film and the accumulation of a large number of water droplets, resulting in shading, so that the light transmission rate remained above 90%; .