深松及秸秆还田对表层土壤物理性状及玉米产量的影响  

Effects of Subsoiling and Straw Returning on Surface Soil Physical Properties and Maize Yield

作　　者：邓智惠 刘新梁 李春阳[1] 闫洪奎[1] 

机构地区：[1]沈阳农业大学农学院,辽宁沈阳110866

出　　处：《作物杂志》2015年第6期117-120,共4页Crops

基　　金：国家科技支撑项目"辽宁春玉米粳稻大面积均衡增产技术集成研究与示范"(2012BAD04B03)

摘　　要：为探索改造中低产田的有效途径,以加深耕层和提高地力为目标,在辽宁省西部进行深松配套秸秆还田的4年定位试验。结果表明:深松和秸秆还田降低土壤容重、增加土壤孔隙度,土壤田间持水量则处理前两年增加后两年下降,处理当年效果最大之后减小;深松配套秸秆还田作用大于旋耕配套秸秆还田,深松条件下,配套秸秆还田第1年减产,隔年秸秆还田第2年、连年秸秆还田第3年增产;深松配套秸秆还田综合效果优于单独深松或秸秆还田。In order to explore the methods to reform medium-low yield fields, deepen soil arable layer and increase soil fertility, subsoiling and straw returning of maize were investigated in a 4-year located experiment in the west of Liaoning. The results were as follows ： with subsoiling and straw returning, the soil bulk density was decreased, soil porosity was increased, and field capacity was increased for two years and then decreased for the other two years and changes of them were very significant in the first year; the effect of subsoiling and straw returning was superior to that of rotary tillage and straw returning; with subsoiling and straw returning year after year, yield was decreased in the first year and increased in the third year and with subsoiling and straw returning every other year, yield was in- creased in the second year; the effect of subsoiling and straw returning was better than that of subsoiling or straw re-turning respectively.

关 键 词：玉米 秸秆还田 深松 土壤物理性状 产量 

分 类 号：S513[农业科学—作物学] S141.4