巨菌草对内蒙古引种区土壤理化性质的影响  

Effects of Pennisetum giganteum on Soil Physical and Chemical Properties in the Introduction Area of Inner Mongolia

作　　者：王利蒙 李钢铁 张博 WANG Li-meng;LI Gang-tie;ZHANG Bo(College of Desert Science and Management,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010018)

机构地区：[1]内蒙古农业大学沙漠治理学院,内蒙古呼和浩特010018

出　　处：《安徽农业科学》2023年第4期58-60,67,共4页Journal of Anhui Agricultural Sciences

基　　金：内蒙古自治区科技成果转化项目(CGZH2018137)。

摘　　要：选择内蒙古达拉特旗、奈曼旗、土默特左旗引种巨菌草(Pennisetum giganteum)的试验地作为调查对象,开展巨菌草生长前后土壤主要物理及化学特性的定量分析。结果表明,各试验区经种植巨菌草土壤容重显著减小,且土壤的孔隙度、最大持水量也以巨菌草样地更为显著、含量更高;巨菌草样地土壤中有机质含量、各类养分含量均高于CK,平均pH降低4.30%,整体上巨菌草样地土壤发展趋于良性,土壤养分性质得到改善,对照样地则存在不同程度的退化趋势;不同引种区的巨菌草样地土壤改良效应不同。综上所述,巨菌草引种对土壤的理化特性均起到良性调控作用,有效提升土壤肥力,可以考虑在北方盐碱地区以及贫瘠土壤的生态环境恢复过程中作为兼具生态经济价值的先锋植物进一步推广种植。The experimental sites of introduced P.giganteum in Dalad Banner,Naiman Banner and Tumed Left Banner of Inner Mongolia were selected as the investigation objects to carry out the quantitative analysis of the main physical and chemical characteristics of the soil before and after the growth of P.giganteum.The results showed that the soil bulk density of the experimental areas decreased significantly,and the soil porosity and maximum water holding capacity were more significant and higher in the sample plot of P.giganteum.The contents of organic matter and various nutrients in the soil of P.giganteum sample plot were higher than CK,and the average pH decreased by 4.30%.On the whole,the soil development of P.giganteum sample plot tended to be benign,the soil nutrient properties were improved,and there were different degrees of degradation trends in the CK.The soil betterment effects of P.giganteum sample plots in different introduction areas were different.To sum up,the introduction of P.giganteum plays a benign regulatory role in the physical and chemical characteristics of soil and effectively improves soil fertility.It can be considered to further promote planting as a pioneer plant with ecological and economic value in the process of ecological environment restoration in saline alkali areas and barren soil in northern China.

关 键 词：巨菌草 理化性质 土壤改良 内蒙古引种区 

分 类 号：S151.9[农业科学—土壤学]