阴山北麓保护性耕作油菜田间杂草控制试验

据调查,阴山北麓保护性耕作油菜田初期杂草密度增加,田间杂草发生时间提前,上下茬农田杂草重叠发生,多年生杂草为害加重。采用化学除草、机械除草、人工除草、农业轮作等单因素和多因素除草技术进行研究。结果表明,采用综合除草"深松+高特克+胺苯磺隆+龙拳"和"中耕+高特克+胺苯磺隆+龙拳"除草效果好,杂草株防除率和鲜质量防除率均达90%以上。

Test of Weeds Control in Rape Fields under Conservation Tillage at the Northern Foot of Yinshan Mountain

As the investigation demonstrated, weeds density increased in rape fields under conservation tillage at the early stage, weeds occurrence time moved up, weeds overlapping took place frequently between crops, and perennial weeds became worse. This trial was performed by adopting single factor and multi-factors including weedings of the chemical, mechanical, manual and of crop rotation. The ~sults showed that： the treatments of adopting comprehensive weeding, subsoiling ＋ benazolin ＋ ethametsulfuron ＋ clopyralid and intertillage ＋ ethametsulfuron ＋ elopyralid had good effects. The weed strains control rate and the weed fresh weight control rate were both higher than 90 percent.