香根草篱对红壤坡耕地坡面土壤酶活性的影响  

Effects of Vetiveria zizanioides Hedgerows on Soil Enzyme Activities of Slope in Red Soil Sloping Land

作　　者：武琳[1] 黄欠如[1,2] 叶川[1,2] 成艳红 钟义军[1] 章新亮[1] 孙永明 

机构地区：[1]江西省红壤研究所,南昌331717 [2]国家红壤改良工程技术研究中心,南昌331717

出　　处：《土壤》2013年第4期673-677,共5页Soils

基　　金：国家"十一五"科技支撑项目(2009BADC6B01);"十二五"国家科技支撑计划重点项目(2011BAD41B01);"十二五"国家科技支撑计划重点项目(2011BAD31B04)资助

摘　　要：为研究香根草篱（Vetiveria zizanioides）对红壤坡耕地土壤酶活性的影响，以典型红壤坡耕地花生＋草篱种植模式为研究对象，选取花生常规种植为对照，研究了花生关键生育期香根草篱对表层土壤（O～20cm）酶活性的空间影响。研究发现：与花生常规种植相比，香根草篱可以明显提高坡面土壤脲酶、蔗糖酶与过氧化氢酶的含量；栽培植物篱后，坡面土壤脲酶、蔗糖酶与过氧化氢酶活性表现出篱前含量增高，篱下含量降低，形成水平带状分布规律。从花生出苗期-结荚期-成熟期，土壤脲酶、蔗糖酶与过氧化氢酶活性均呈现先增后减的趋势，其中以结荚期较高。采样点与土壤脲酶、蔗糖酶活性呈显著线性相关，3种土壤酶之间的相关性也都达到了显著相关。Taking peanut and hedgerows cropping patterns as research objects with peanut conventional cultivation as a control, the effects of Vetiveria zizanioides hedgerows on 0-20 cm soil enyme activities were tested in critical growth duration of peanut in red-soil sloping land. Results showed that： Vetiveria zizanioides hedgerows obviously increased the activities of soil urease, sucarse and catalase compared with traditional cultivation. Moreover, soil enzyme activities tended to accumulate above the plant hedgerows and to be eroded downward below the hedgerows along contour lines across the field. With the peanut growth and development, the activities of soil urease, sucarse and catalase increased firstly, and then decreased, exhibiting the highest at the podding stage. The correlation coefficient between sampling point and urease and sucarse, and the correlation coefficient among the soil enzymatic activities reached significant level.

关 键 词：植物篱 红壤坡耕地 土壤酶活性 

分 类 号：S154.3[农业科学—土壤学]