条带深旋对高产春玉米土壤紧实度、根系特性及产量的影响  

Effect of Striped Deep Rotary Tillage on Soil Density,Root Character and Yield of Spring Maize

作　　者：翟永胜[1] 高聚林[1] 王志刚[1] 于晓芳[1] 胡树平[1] 孙继颖[1] 苏治军[1] 

机构地区：[1]内蒙古农业大学农学院,内蒙古呼和浩特010019

出　　处：《内蒙古农业科技》2013年第4期14-16,43,共4页Inner Mongolia Agricultural Science and Technology

基　　金：国家自然科学基金资助项目(31060175);国家粮食丰产科技工程(2011BAD16B13;2012BAD04B04;2013BAD07B04);国家现代农业玉米产业技术体系蒙西综合试验站(CARS-02-63);973计划项目(2009CB118601)

摘　　要：试验在一年条带深旋（TX）、隔年错行条带深旋（GTX）和常规浅旋（ck）3种不同耕作方式下，测定土壤紧实度和春玉米根系干重密度、根系直径、根长密度、根系表面积密度以及产量等指标，以阐明条带深旋对农田土壤紧实度、玉米根系特性的影响。试验结果表明：TX和GTX能有效的打破犁底层，降低了10．0—27．5cm土层的平均肾实度；增加了15～60cm土层中根系干重密度、根长密度和根系表面积密度分布；降低了根系的平均直径；分剐增产19．68％和24．35％。The experiment was carried out by three tillage methods of first year strip deep totary tillage （TX）,second year exchange row strip deep totary tillage （GTX） and the conventional shallow tillage （ck）.Through measured the soil compaction,the density of dry root weight,tile diameter of root,the density of root length,the density of root superficial area and the yield,and so on, revealed the effect of strip deep totary tillage on the soil compaction and root characters.The results showed that TX and GTX can effectively broke the plow pan,reduced soil compaction for 10.0-27.5cm soil layer, and increased the distribution of dry root weight,root length and root superficial area for 15-60cm soil layer,and lowered the diameter of root,and increased the yield by 19.68% and 24.35%,respectively.

关 键 词：条带深旋 紧实度 根系特性 春玉米 产量 

分 类 号：S513[农业科学—作物学]