农田林网内土壤水分变化动态的研究

本文通过大量的野外观测资料,分析了林网内土壤水分的变化动态。结果表明:在整个生长季节中,林网内土壤湿度、贮水量、有效水量均高于林外。林网内土壤水分的分布规律是N3H 处最高,N5H 处最低。在林网保护下,还可以节约用水,提高灌溉效益。林网内土壤水分的分布和小麦产量的分布规律是一致的,并用回归方程很好地拟合了冬小麦产量(Kg/m~2)和土壤贮水量(mm)的关系。Y=0.04294+0.004381X(r=0.92)

Study on the Tendencies of Soil Water in A Shelterbelt Network

According to the data obtained from a lot of field experiments,the paperdeals with the changeable tendencies of soil water in a shelterbelt network.The results showed that,the soil moisture,soilwater and soil available waterdistribution inside the shelterbelt network were more than those outside it in agrowing phase.The distrbution of soil water was that the maximum plots ofsoil water were in N3H and the minimum plots were in N.5H.Also theresults showed that,the shelterbelt could economize soil water,and theefficiency of irrigation was increased in the net-work The distibution of soiwater in the network was identical with the distrbution of wheat yield.Aregression equation was successfully used to deal with the correlation betweenwheat yield(kg/m~2)and soil water content(mm)Y=0.04294+0.004381X(r=0.92)