杉木毛竹混交林土壤理化性状研究

对尤溪县梧园村毛竹纯林改造成毛竹混交林的土壤理化性质进行分析,结果表明:在0～20 cm土层中,杉竹混交林土壤的容重低于毛竹纯林,总孔隙度、非毛管孔隙度、毛管孔隙度、通气度、孔隙度比都比毛竹纯林增加,杉竹混交林土壤的毛管持水量、最小持水量增加,土壤的保水能力增强;杉竹混交林土壤的有机质、全氮、全磷、全钾、水解性氮、速效磷和速效钾含量比毛竹纯林增加,土壤的酸性得到改善。说明混交有利于改善土壤的通气透水能力,发挥林分水源涵养功能,有利于增加土壤养分及养分的有效化,从而有利于植物的生长。

Research on the Soil Physical and Chemical Properties after Cunninghamia lanceolata and Phyllostachys pubescens Mixing

Through the research on the soil physical and chemical properties after changing Cunninghamia lanceolata pure forest into Cunninghamia lanceolata and Phyllostachys pubescens mixed forest in Wuyuan Village in Youxi County,the studied results indicated that in the 0-20cm deep soil,the soil volume weight of Cunninghamia lanceolata and Phyllostachys pubescens mixed forest was lower than pure Phyllostachys pubescens forest,the total porosity,non—capillary porosity,capillary porosity,venting quality and porosity had been upgraded as compared with the pure forest.The mixed forest soil capillary water capacity and least water capacity had increased,the soil water holding capacity increased;the nutritive index such as the soil organic matter,total nitrogen,total phosphor,and total kalium as well as hydrolysable nitrogen,rapidly available phosphor and rapidly available kalium contents were higher than the pure forest,the soil acidity improved.Which showed that the mixing was advantage to improve the soil pervious and aeration abilities,which possessed the water conservation function,and was advantage to increase the soil nutrient and nutrient availability,so as to do good to the plant growth.