四川省水稻机直播田杂草防控技术研究
网络出版日期: 2018-09-20
基金资助
四川省科技支撑计划项目（2016NZ0112；2015NZ0010；2016NZ0040）；四川省财政创新能力提升工程专项（2016GYSH-008）；国家重点研发计划（2016YFD0300506）
Weeds Control Techniques in Mechanical Direct Seeding Paddy Fields
为解决机直播稻田杂草多、防除难的问题，在对四川省机直播主要区域稻田杂草发生情况及当地采取的杂草防除方法调查的基础上，进行了封闭除草与茎叶除草防效比较、播封同步除草剂防效比较、茎叶除草剂防效比较等试验。结果表明，四川省机直播稻田杂草防除应采取播种时封闭除草，播种后50 d进行茎叶除草，后期结合实际情况补充进行茎叶除草，即“一封、二杀、三补”的防除方法；封闭除草宜选用60%新马歇特1 500 mL/hm2+10%吡嘧磺隆300 mg/hm2对水600 L/hm2均匀喷施，株防效和鲜质量防效超过和接近90%。茎叶除草采用稻杰900 mL/hm2+千金600 mg/hm2对水600 L/hm2均匀喷施效果最优。
姜心禄1，2,黄明波3,蒋继承4,赵浩宇5,李旭毅1，2，6,池忠志1，2，6,郑家国1，2，6* . 四川省水稻机直播田杂草防控技术研究[J]. 中国稻米, 2018 , 24(5) : 78 -82 . DOI: 10.3969/j.issn.1006-8082.2018.05.017
In order to solve the problem of many weeds and difficult to prevent in direct seeding paddy fields, on the basis of investigation of weed occurrence and weed control method in direct seeding paddy fields in Sichuan province, three experiments were conducted as follows: to compare weed control effects between closure-weed control （pre-emergent herbicide control） and steam/leaf herbicide control （post-emergence herbicide control）; to select pre-emergent herbicide used at seeding; to select post-emergence herbicide. The results showed that pre-emergent herbicide should be used at seeding in direct seeding paddy fields and post-emergence herbicide should be used 50 days after sowing. In later stage, combined with the actual situation to decide whether to carry on post-emergence herbicide. The pre-emergent herbicide was made of 60% Machete plus at 1 500 mL/hm2 and 10% Pyrazosulfuron-ethyl at 300 mg/hm2 mixed with 600 L/hm2 water, and the control effect was exceed 90%. On the other hand, Penoxsulam at 900 mL/hm2 and cyhalofop-butyl at 900 mL/hm2 mixed with 600 L/hm2 water were used as post-emergence herbicide, it has good control effects.
Key words： rice; mechanical direct seeding; weeds control techniques
/
| 〈 |
|
〉 |