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本刊第四期介绍了防寒沟以后,有些同志耽心如防寒沟建在温室内会不会影响温室的使用面积,给作业带来不便以及怎样施工较为方便等等,现就这些问题再谈一点看法,供参考。防寒沟作为温室的保温措施,对于改变低温季节温室内作物头热脚冷的生长环境是有作用的,所以,在我国北方早已采用。但一般都只在温室的南面挖沟,在沟内填塞一些保温或酿热增温的物质。在实际生产中,填塞这些物质,原料较少,生产上普遍采用有困难。为了克服填料不足的问题,我们采取温室四周都挖防寒沟。沟内不填任何物质,而是密封的空沟。这种措施保温效果较好。建筑防寒沟时应注意。当防寒沟的外墙(即温室
After I introduced cold-proof ditches in the fourth issue, some comrades are worried about whether the construction of cold-shelters in the green house will affect the area of greenhouses used, the inconvenience caused to the operation and the convenience of construction. Now I will talk about these issues A little view, for reference. Cold channel as a greenhouse insulation measures for changing the cold season crops in the greenhouse crop head cold feet cold growth environment is a role, so it has long been used in northern China. But generally only digging ditch in the south of the greenhouse, in the trench filled with some warm or stuffed hot warming substances. In actual production, packing these materials, less raw materials, production is generally difficult to use. In order to overcome the problem of insufficient packing, we have to dig cold trench around the greenhouse. Do not fill any material in the trench, but a sealed empty trench. This measure is better insulation effect. Construction cold trench should pay attention. When cold-resistant trench wall (ie greenhouse