摘要
为选出控制红枫湖坡耕地水土流失效果较好的植物篱带宽,对比了由香根草和灰毛豆混合建设(1∶1行间混交,>2行为行间交互混交)的不同行数的植物篱(每个处理小区种植3带植物篱,分别设每带2行,每带4行,每带6行,自上而下每带分别2、4、6行4个植物篱处理及对照共5个处理)对地表径流量、泥沙量及地表径流中水溶解态全氮、全磷、全钾、铵态氮和泥沙中的固体态的全磷、全钾的影响。结果表明:各植物篱处理的各项指标都小于对照处理;方差分析结果及F测验证明,处理间存在显著差异(P<0.05)。多重比较结果表明:1)除每带2行植物篱外,其他植物篱处理都相对于对照对养分元素具有显著的拦截作用。2)每带4行处理和自上而下各带分别2、4、6行植物篱处理与每带2行处理无显著差异;每带6行处理显著小于每带2行植物篱处理。3)除泥沙所含的磷、钾元素外,每带6行与自上而下分别2、4、6行植物篱无显著差异,每带6行的各个指标都与每带4行无显著差异。综合试验结果和实际应用要求得出,每带4行是本试验所涉及的植物篱行数中的最佳行数,其次自上而下每带分别2、4、6行的种植方式也较好。
In order to choose a appropriate width of plant hedge for soil and water conservation on slope farmland nearby Hongfeng Lake,different widths of plant hedge of mixed Vetiveria zizanioides and Tephrosia purpurea（basic hedge were composed of 1 line Vetiveria zizanioides and 1 line Tephrosia purpurea,and 2 row hedge means 1 basic hedge.） were designed,each plant hedge treatment with 3 bands,including 0（control）,2,4,6 rows/band,and 2-4-6 rows from top to bottom.Surface runoff,sediment and nutrients were compared.All indexes of treatments were lower than that of the control.According to the variance analysis and F-test,significant differences among different treatments were found.1） Further multiple comparison results showed that nutrient elements were significantly blocked by the plant hedge treatments except for 2-rows/band treatment.2） There was no significant difference among treatments with 2-rows/band,4-rows/band and 2-4-6 rows from top to bottom,but the difference between 6-rows/band and 2-rows/band treatments was significant.3） There was only significant difference in blocking effect of soil P and K between the treatment of 6-rows/band and other two treatments of 4-rows/band and 2-4-6 rows from top to bottom.From results of both experiment and practical application,4-rows/band probably is the best choice for local place,followed by 2-4-6 rows from top to bottom.
出处
《中国水土保持科学》
CSCD
2012年第5期36-42,共7页
Science of Soil and Water Conservation
基金
贵州省优秀科技教育人才省长基金项目"不同碳酸盐岩石对土壤侵蚀影响的研究"(黔省专字2008-7号)
贵州省国际科技合作项目"喀斯特土壤侵蚀的历史记录研究"(黔科合外G字-2010-7009)
贵州省留学人员科技活动项目"喀斯特土壤侵蚀的历史过程研究"(黔人项目资助合同2009-3)
贵阳"两湖一库专项"项目[2009]"旱坡地植物蓠控制土壤侵蚀技术及示范"(筑科农合同字第3-042号)
关键词
不同行数植物篱
坡耕地
水土流失防治
红枫湖
different bandwidth plant hedge
slope farmland
soil and water conservation
Hongfeng Lake
