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从低温季节栽培蔬菜来看,要求尽量提高塑料大棚内的温度,而大棚内的温度,主要来自太阳的辐射热。由于大棚的方向不同,也影响到大棚上日光的照射量和大棚内的透光率等。在确定大棚的方向时,首先应该使大棚内能具有尽可能多的采光
From the cultivation of vegetables in the cold season point of view, require the best to raise the temperature inside the plastic greenhouse, and the temperature inside the greenhouse, mainly from the sun’s radiant heat. Due to the different direction of the greenhouse, but also affect the amount of sunlight on the greenhouse and the light transmittance within the greenhouse. In determining the direction of the greenhouse, first of all, the greenhouse should have as much light as possible