木薯不同种植方式的土壤保持效应  

Soil Conservation Effect of Different Planting Patterns of Cassava

作　　者：韦丽君[1] 李军[1] 俞奔驰[1] 卢赛清[1] 郑华[1] 盘欢[1] 罗燕春[1] 

机构地区：[1]广西壮族自治区亚热带作物研究所,南宁530001

出　　处：《农业研究与应用》2016年第4期1-6,共6页Agricultural Research and Application

基　　金：国家木薯产业技术体系栽培与植保/土壤与肥料岗(CARS-12-gxlj);广西科学研究与技术开发计划项目(桂科合4123001-1-5);广西科学研究与技术开发计划项目(桂科合14125007-1-4)

摘　　要：采用随机区组试验,研究了坡耕地木薯不同种植方式对土壤保持及木薯产量的影响。结果表明:各处理的土壤流失量均极显著少于对照;除"犁耙—施肥—起畦"和"犁耙—施肥—不起畦—高度分枝品种"外,其它处理的木薯块根产量均显著或极显著高于对照;处理的木薯茎叶产量均极显著高于对照。"犁耙—施肥—不起畦—间种花生"的土壤流失量极显著少于其它处理,木薯产量也较高。坡耕木薯地土壤流失量与降雨量呈显著或极显著正相关。降雨是木薯坡耕地土壤流失的主要原动力,"犁耙—施肥—不起畦—间种花生"是木薯坡耕地土壤保持的首选种植模式。Effects of different planting patterns on soil conservation and cassava yield were investigated with a randomized block design. The results indicated that soil loss of all treatments was very significantly less than CK. The cassava root yield of every treatment except ＂plow har- rowing- fertilizing-- furrowing＂ and ＂plow harrowing-- fertilizing-- not furrowing-- highly branched variety＂ were significantly or very significantly higher than CK. The yield of stems and leaves of every treatment except ＂plow harrowing-- fertilizing-- not furrowing＂ were sig- nificantly higher than CK. The soil loss of ＂plow harrowing-- fertilizing-- not furrowing-- in- ter-cropping peanut＂ was very significantly less than other treatments, and the cassava yield of this planting pattern was also relatively high. Soil loss and rainfall in sloping farmland showed significant or very significant positive correlation. Rainfall is the main driving force of soil loss in cassava sloping farmland. ＂Plow harrowing -- fertilizing -- not furrowing -- inter-cropping peanut＂ is the preferred cassava planting pattern for soil conservation in sloping farmland.

关 键 词：木薯 坡耕地 降雨量 土壤流失 木薯产量 

分 类 号：S533[农业科学—作物学] S157.433