水分对栗钙土理化性质及杨树生长的影响

Effect of Moisture on Physicochemical Properties of Chestnut Soil & Growth of Poplar

采用野外调查和室内测试相结合的方法,研究了水分对栗钙土理化性质和杨树生长的影响。结果表明:由于过水林地比未过水林地具有较低的容重和土壤硬度、较高的土壤持水能力以及较高的有机质、全氮、全磷和有效氮含量,使得过水林地上杨树人工林的直径、树高和材积生长量、各级根系长度、根系总长度和根系总生物量整体上超过未过水林地。

The Effect of moisture on physicochemical properties of chestnut soil growth of poplar was studied by using the method of combination of field investigation laboratory testing.Result shows that lower bulk density and soil hardness,higher water holding capacity and organic matter,total N,total P,available N are in the woodland with surface runoff than that in the woodland without surface runoff;larger increment of DBH,tree height,volume growth,root length,total length of root,total biomass of roots at all levels in the woodland with surface runoff are more than that in the woodland without surface runoff overall.