【摘要】 2002~2003年在0~3次铲蹚条件下研究了铲蹚次数对玉米生长发育和产量形成的影响。结果表明,多次铲蹚增大了玉米倒伏率,降低了玉米最大叶面积指数、株高及各时期叶片叶绿素含量。少铲蹚有增产的趋势,并且可以降低生产成本、增加经济效益。更多还原

【Abstract】 The effects of tillage on maize growth,development and yield formation were studied in 2002～2003.The result showed that lodge ratio of maize increased and maximum leaf area index,plant height and leaf chlorophyll concentration decreased under tillage.Furthermore,the grain yield was higher under minimum tillage than that under tillage,thus minimum tillage reduced costs and increased economic benefits.更多还原