摘要
晋西旱塬区多年玉米定位试验表明,连续五个干旱年型下免耕秸秆覆盖对土壤水分、玉米蒸腾蒸发及产量影响的效应和正常降水年型下的效应趋势一致,但比正常降水年型下的效应更加明显。同时,试验还表明在晋西旱塬区免耕秸秆覆盖量以7500kg/hm^2为最佳,在干旱年型比常规耕作增产50%以上。晋西旱塬区玉米免耕覆盖技术推广前景良好。
Notillage with stalkmulch is different managemant technique on dryland. The tests shows that this technique in past 5 dry years leads to the similar effects on soil water、plant evapotranspiration and corn yield in common years. The effects arc stronger than in common ycars. Thc best amounts in our experimcntal arca is 7 500 kg/hm^2
出处
《山西农业大学学报（社会科学版）》
2005年第6期98-100,102,共4页
Journal of Shanxi Agricultural University:Social Science Edition
