摘要
在普通塑料大棚上增设自动通风和二道膜装置 ,结果表明 :这种改造大棚月均 (11月～翌年 3月 )最低气温比普通大棚内提高 1.8℃ ,比露地提高 4℃ ;改造大棚月均地温比普通大棚内高 0 .8～ 1.5℃ ,比露地高3.6～ 5 .4℃ ;改造大棚的光照强度比普通大棚和露地分别均减少为 17.2 %～ 33.7%和 4 8.0 %～ 6 5 .3% ;改造大棚对温度的调节作用 ,提高了月季切花的产量和优质花率。
The second film and automatic ventilator were added in general plastic tunnel and the experiments showed that the monthly mean of lowest temperature (from Nov. to Mar.) of the reformed plastic tunnels was higher than those of the general ones and open field, and respectively increased by 1.8℃ and 4.0℃; the monthly mean earth temperature of the reformed plastic tunnels was also higher than those of the general ones and open field, and respectively rose 0.8～1.5℃ and 3.6～5.4℃; the intensity of illumination in the reformed plastic tunnels was less than those in general ones and open field, and respectively decreased by 17.2%～33.7% and 48.0%～65.3%. A good regulating function of the reformed plastic tunnels on temperature improved the yield of China rose cut-flower and the rate of its high-grade flowers.
出处
《上海农业学报》
CSCD
2005年第1期49-52,共4页
Acta Agriculturae Shanghai
基金
安徽省"十五"科技攻关项目资助
