摘要
为摸清东北春大豆区保护性耕作大豆田间杂草的发生规律,控制杂草危害,提高作物产量,对大豆田的杂草进行调查并进行化学除草剂防效试验。结果表明:保护性耕作大豆田主要发生的杂草有6科13种,禾本科杂草占65%,阔叶杂草占25%,其它杂草占10%,且狗尾草、稗草、藜、黄花蒿、卷茎蓼和苦苣是保护性耕作大豆田主要杂草。5种除草剂中等浓度处理的防除杂草效果和增产率均表现为:48.8%咪.氟.灭草松>48%灭草松>41%草甘膦>5%咪草烟>25%氟磺胺草醚。以2 250 mL.hm-241%草甘膦、3 150 mL.hm-248%灭草松和2 250 mL.hm-248.8%咪.氟.灭草松的除草效果更佳,在农业生产中可优先选用。
The weed occurrence regularity in soybean field under conservation tillage in Northeast China was determined,and the effect of 6 chemical herbicides was investigated. There had 13 species of 6 families weed in soybean field under conservational tillage,the gramineae, broadleaf and other weeds accounted for 65% ,25% and 10% ,respectively. The weed control effects and soybean yield increasing rate of 5 herbicide under middle concentration treatment in descending order were 48.8% im. fo. bentazone ,48% bentazone ,41% glyphosate ,5% imazethapyr and 25% fomesafen. Results suggest 2 250 mL. hm -241% glyphosate,3 150 mL.hm-248% bentazon and 2 250 mL-hm-248.8% im.fo.bentazone have the best control effects,which can be take priority in agricultural production.
出处
《大豆科学》
CAS
CSCD
北大核心
2013年第4期521-525,共5页
Soybean Science
基金
农业部保护性耕作创新项目(20090507)
内蒙古自治区科学技术厅科技计划项目(20100715)
关键词
保护性耕作
大豆田
杂草
化学防除技术
Conservation tillage
Soybean field
Weeds
Chemical herbicides
