生物覆盖对山地杨树根际土壤物理性质的影响  

Effects of biological mulching on dynamic of physical properties in rhizospheric soil of poplar plantation in southern upland area

作　　者：刘久俊 王群 LIU Jiujun;WANG Qun(Kunming Survey&Design Institute of State Forestry&Grassland Administration,Kunming 650216)

机构地区：[1]国家林业和草原局昆明勘察设计院,云南昆明650216

出　　处：《林业建设》2020年第4期39-43,共5页Forestry Construction

摘　　要：以山地杨树人工林为对象,研究了不同覆盖量和覆盖材料对杨树根际土壤物理性质的影响。结果表明:覆盖使根际土壤含水率增加,其改善作用随覆盖量的加大而增强,7.5kg/m^2处理的含水率比CK高22.29%;不同覆盖材料间,白茅的效果要略好于其它覆盖材料,比对照高8.56%。覆盖能提高根际土壤pH值,并逐渐与中性接近,这种调节作用,随覆盖量的增大而加强,pH值分别比CK高0.48个pH单位;不同覆盖材料对土壤pH值调节作用的大小不同,以蕨类和马桑的调节作用较大,比CK增加0.39、0.25个pH单位。Effects of mulching weights and materials on dynamic of physical properties in rhizospheric soil of poplar plantation were investigated in this paper.The results showed that mulching increased moisture and regulated pH value in rhizospheric soil.With the increasing of mulching weights,its ameliorative function was strengthened.Compared with the control,the moisture and pH value in the treatment with mulching 7.5kg/m^2 were higher 22.29% and increased by 0.49.Moisture mulching of Pteridium aquilinum var.latiuscukum was higher 8.56% than the control,and the effect of which on improving moisture was a little better than other vegetation in different mulching materials,and the regulative function of pH value is maximal in Pteridium aquilinum var.latiuscukum and Coriaria nepalensis,which increased by 0.39 and 0.25 respectively.

关 键 词：覆盖重量 覆盖材料 杨树 根际土壤 含水率 PH值 

分 类 号：S792.11[农业科学—林木遗传育种]