【摘要】 经过 1995～ 2 0 0 1年 7年的定位试验 ,重点研究了玉米宽窄行种植的土壤养分、土壤水分、土壤硬度及其它土壤物理性状的变化 ,提出了玉米宽窄行种植土壤环境变化的量化指标 ,对指导农业生产具有重要的意义更多还原

【Abstract】 By the location experiments for seven years from 1995 to 2001,we made key point studies on the changes of soil nutrient,moisture,hardness and other physical characters in maize planted in narrow/wide row form,and raised quantity indices of soil environment changes in the maize planting form,which is of significance to guide people in their agricultural production更多还原