空气能热泵系统在日光温室的应用效果

Application Effect of Air Energy Heat Pump System in Solar Greenhouse

利用空气能热泵系统,以水为介质对日光温室栽培槽土壤进行加热,测试冬季日光温室内气温和地温变化,以及夏季对根结线虫的防治效果。结果表明,在冬季用电低谷期,日光温室采用空气能热泵系统加温,平均气温和地温比对照温室提高2.86℃和1.94℃;夏季高温闷棚后再运行空气能热泵系统加热8 h,根结线虫平均灭虫率为92.3%,灭虫均匀性为98.9%。适时运行空气能热泵系统,冬季能有效提高温室内的气温和地温,夏季可有效提高对根结线虫的防治效果。

This paper used the air-energy heat pump system to heat the soil in solar greenhouse culture tank with water as medium,and tested the changes of air temperature and ground temperature inside the solar greenhouse in winter and control effect of root-knot nematode in summer.The results showed that using airenergy heat pump system to heat,the average air temperature and ground temperature in solar greenhouse were 2.86℃ and 1.94℃,higher than that of the contrast greenhouse during the low power consumption time in winter.In summer,after closing plastic shed by high temperature and then heated 8 h by the air-energy heat pump system,the average root-knot nematodes killing rate was 92.3% and uniformity of killing rate was 98.9%.Running the air energy heat pump system in good time could effectively increase the air temperature and ground temperature of greenhouse in winter and effectively improve the control efficiency of root-knot nematode in summer.