土地利用方式对土壤基本性质及肥力的影响

目的]研究不同土地利用方式下土壤基本性质及肥力的差异。方法]以山西省吕梁市离石区王家沟为试验基地,研究侧柏和碱草混交、欧李、柠条、苜蓿、油松5种土地利用类型对土壤基本性质、有机质含量、有效磷含量及碱解氮含量的影响。结果]不同土地利用方式土壤基本性质不同;有机质含量由高到低依次为侧柏和碱草混交、柠条、欧李、油松、苜蓿用地;有效磷含量由高到低依次为侧柏和碱草混交、油松、柠条、欧李、苜蓿用地;碱解氮含量由高到低依次为侧柏和碱草混交、苜蓿、欧李、柠条、油松用地。结论]侧柏和碱草混交最有利于改良土壤、保土保肥。

Effects of Different Land Use Ways on Soil Basic Properties and Fertility

Objective] To study the difference of soil basic properties and fertility under different land use ways.Method]Taking Wangjiagou in the Lishi District, Luliang City, Shanxi Province for experimental base,effects of five types of land use(Chinese arborvitae and nutans ,caragana,Chinese dwarf cherry,Chinese pine, alfalfa)on soil basic properties,organic matter content, effective phosphorus content and alkaline hydrolysis nitrogen content were studied.Result] The soil basic properties were different under different land use ways.Order of organic matter content was Chinese arborvitae and nutans,caragana,Chinese dwarf cherry,Chinese pine, alfalfa;Order of effective phosphorus content was Chinese arborvitae and nutans,alfalfa,Chinese dwarf cherry,caragana,Chinese pine;Order of alkaline hydrolysis nitrogen content was Chinese arborvitae and nutans,alfalfa,Chinese dwarf cherry,caragana,Chinese pine.Conclusion]Chinese arborvitae and nutans was beneficial for soil improvement and filteration of water quality.