不同果草模式下土壤理化性状分析  

Analysis on the Physicochemical Characters of Soil under Different Fruit-Grass Modes

作　　者：程斯[1] 何丙辉[1] 王侨[1] 苏锋[1] 

机构地区：[1]西南大学资源环境学院,重庆400716

出　　处：《安徽农业科学》2009年第10期4575-4577,共3页Journal of Anhui Agricultural Sciences

摘　　要：[目的]寻求适合三峡库区的"果—草"模式。[方法]在重庆三峡库区万州区内,设3种果—草模式处理:佛罗橙—紫花苜蓿,套种1年(T1)、佛罗橙—北海道牧草,套种2年(T2)、佛罗橙—白三叶,套种1年(T3),系统地研究了不同果草模式对土壤理化性状的影响。[结果]3种果草套种模式均能有效改善土壤养分状况,增加土壤肥力,其中以T1和T2模式的养分含量最优;能增加土壤中大孔隙的含量,提高土壤渗透速度,其中以T2模式最大,达到8.03 mm/min;能够提高土壤中较大颗粒的含量,有利于土壤养分的富集,其中以T1和T2模式的效果最显著。[结论]佛罗橙—北海道牧草模式和佛罗橙—紫花苜蓿模式是适合三峡库区的较为理想的果—草模式。[Objective] The research aimed to seek the fruit-grass mode that was suitable for Three Gorges Reservoir Area.[Method] In Wanzhou section of Chongqing Three Gorges Reservoir Area,3 treatments of fruit-grass mode were set up as： Florida orange-alfalfa,interplanting 1 year（T1）;Florida orange-Hokkaido grass,interplanting 2 year（T2）;Florida orange-white clover,interplanting 3 year（T3） and the effects of physicochemical characters of soil under different fruit-grass model were systematically researched.[Result] The 3 interplanting modes of fruit-grass all could improve the nutrient status of soil and increase the soil fertility,with the nutrient content of T1 and T2 modes being optimal.They could improve the content of the macropore in the soil and increase the soil infiltration rate,with the T2 mode being largest（8.03 mm/min）.They could improve the content of the larger grain in the soil,which was propitious to the enrichment of soil nutrient,with effects of T1 and T2 models being most notable.[Conclusion] Florida orange-Hokkaido grass model and Florida orange-alfalfa modes were the ideal models of fruit-grass which was suitable for Three Gorges Reservoir Area.

关 键 词：果—草模式 不同种植模式 紫色土 

分 类 号：S153[农业科学—土壤学]