张家港地区不同防虫网覆盖方式下设施环境变化规律

通过使用智能型温湿度记录仪,以露地为对照,对夏季高温季节3种防虫网覆盖方式下(水平棚架覆盖、大棚覆盖、连栋大棚覆盖)设施内的空气温湿度进行连续记录,初步摸索出3种防虫网覆盖方式下设施内温湿度的变化规律。试验结果表明,高温晴天不同处理防虫网内的温度都高于露地,防虫网+连栋大棚模式设施内温湿度随着外界温度变化最大,温度最高时,防虫网+连栋大棚湿度最低,气温降低后湿度又升高得最快;雨天不同处理温度都差不多,防虫网+连栋大棚覆盖下湿度最低;阴天温度下午最高,各处理温度差别不大,防虫网+连栋大棚的湿度最低;雨转晴后防虫网+连栋大棚温度升高最快,湿度降低最快;所以防虫网+连栋大棚覆盖最适合夏季叶菜类栽培,高温低湿可有效防止烂菜,全封闭的生长和管理模式也可起到很好的防虫效果。

Change Rules of Facility Environmental Parameters under Different Insect-proof Net Covering Methods in Zhangjiagang Area

Taking the open field treatment as control,we measured and recorded the air temperature and humidity in the vegetable facilities under three different insect-proof net covering methods continuously in summer using an intelligent temperature and humidity recorder.The three covering treatments were insect-proof net,insect-proof net ＋standard greenhouse,insect-proof net＋multi-span greenhouse.The results showed that,in sunny days,the air temperature of the insect-proof net covering treatments were higher than those of open field treatment,and the temperature and humidity of the insect-proof net＋multi-span greenhouse treatment changed most significantly,when it reached the highest point,the inner humidity got the lowest point,and vice versa.In both cloudy and rainy days,the temperature of all the four treatments had not significant differences,and the insect-proof net＋multi-span greenhouse treatment had the lowest humidity.In the sunny days after raining,the temperature of the insect-proof net＋multi-span greenhouse treatment increased most significantly,and the humidity decreased most significantly.In a word,the insect-proof net＋multi-span greenhouse treatment was most applicable to grow vegetables in summer for avoiding vegetable rot and preventing insects effectively.