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卢龙县郑庄村利用日光温室生产黄瓜,一般亩产黄瓜5500公斤,产值6000元,现将日光温室黄瓜无公害高产高效栽培关键技术介绍如下:一、温室环境温室的山墙、后墙厚度应为当地最大冻土层的2倍以上,后坡厚度要超过当地最大冻土层的2/3。前屋面双层覆盖。外再盖一层浮膜(用旧棚膜)可提高棚温1-2℃,可延长草
Lulong County Zhengzhuang use cucumber production in solar greenhouse, the general mu produce 5,500 kilograms of cucumbers, the output value of 6,000 yuan, now the greenhouse cucumber pollution-free high yield and efficient cultivation of key technologies are as follows: First, the greenhouses Greenhouses greenhouse, the thickness of the back wall should be More than 2 times the largest permafrost in the area, and the thickness of the back slope exceeds 2/3 of the maximum permafrost in the area. Double-covered front roof. Cover with a layer of floating membrane (with the old shed film) can increase shed temperature 1-2 ℃, extend the grass