塑料遮阳网大棚小气候观测与分析

Observations and analysis of microclimatic shade-net greenhouse in Chengdu

通过 3个晴天 ,对遮阳网大棚内小气候进行观测 ,结果表明 :黑色SZW -12型遮阳网遮光率为 5 5 % -77% ,平均为 6 9% ;对降低土壤温度十分明显 ,0 ,5 ,10cm降温幅度分别为 :1.0 -11.9℃ ,0 .8-6 .2℃ ,0 .7-5 .2℃ ,平均降温分别为 5 .6℃ ,3 .8℃ ,3 .3℃ ;而对棚内气温降低作用不明显 ,只有 0 .30m以下气层平均降低 0 .4℃ ;0 .5 0 ,1.0 0 ,1.5 0m气层比棚外高 0 .2 -0 .9℃ ,并有逆温现象。此结果可为花卉度夏 。

The observations of the microclimatic condition in the greenhouse with the shade nets show that the permeability of the black shade nets of model SZW 12 ranges between 55% and 77% with the average 69%.The temperature decrease are 1.0-11.9℃,0.8-6.3℃ and 0.7-5.2℃ for the depth of the soil surface 0cm,5cm and 10cm respectively with the average 5.6℃.The temperature decreases at the level of 0.50m,1.00m and 1.50m are 0.2-0.9℃ higher than those outside.