| Effect on weeds control in the conservation-tillage oat field of chemical herbicide |
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| DOI：10.7606/j.issn.1000-7601.2018.04.36 |
| Key Words: conservation tillage oat field weeds chemical herbicide control efficiency inner mongolia |
| Author Name | Affiliation | | LU Zhan-Yuan | Inner Mongolia Agriculture and Animal Husbandry, Hohhot, Inner Mongolia, 010031 | | ZHANG Xiang-Qian | Inner Mongolia Agriculture and Animal Husbandry, Hohhot, Inner Mongolia, 010031 | | WANG Yu-Fen | Inner Mongolia University, Hohhot, Inner Mongolia, 010021 | | CHENG Yu-Chen | Inner Mongolia Agriculture and Animal Husbandry, Hohhot, Inner Mongolia, 010031 | | LI Juan | Inner Mongolia University, Hohhot, Inner Mongolia, 010021 | | ZHANG De-Jian | Inner Mongolia University, Hohhot, Inner Mongolia, 010021 |
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| Abstract: |
| In order to explore the law of weed occurrence, to control the growth of weeds and to increase the oat yields in oat field under conservation tillage in Inner Mongolia, this study mainly investigated the species of weeds in the oat fields of Shangbaihai Township, Wuchuan County, Hohhot City, and the various effects of chemical herbicides’ prevention and cure of weeds. The results show: there were weeds from 13 species of 6 families in oat field under conservational tillage. Quinoa, salsola and bristlegrass were the three major weeds, which occurred mainly in mid May to early June. 5 herbicide of 2, 4-D butyl ester, tribenuron-methyl, glyphosate, chipton, bromoxynil, octanoate all had control effect on wees in the conservation-tillage oat field.The weed control effect of single herbicide in descending order was 2, 4-D butyl ester >10% tribenuron-methyl >75% tribenuron-methyl > glyphosate > chipton > bromoxynil octanoate. In addition, the combined effects of 300 ml·hm-2 2 2,4-D butyl ester +300 g·hm-2 chipton in seedling stage, and 900 ml·hm-2 glyphosate after harvest was best. The control effect for single plant and for plant fresh weight were both around 96.4%, with control effect for plant fresh weight being significant. The increasing of oat yield was more than 100%, the highest net economic income reached 6 618.0 RMB·hm2, which is recommended as a priority in agricultural production． |
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