WANG Chun,WANG Qian,HUANG Yuanju,et al.Resistance Detection of Scirpus juncoides Roxb. to Pyrazosulfuron-Ethyl and the Screening of Herbicides in Rice Fields from Heilongjiang Province[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(03):44-49.[doi:10.11942/j.issn1002-2767.2023.03.0044]
黑龙江省稻田萤蔺对吡嘧磺隆的抗性监测及防治药剂筛选
- Title:
- Resistance Detection of Scirpus juncoides Roxb. to Pyrazosulfuron-Ethyl and the Screening of Herbicides in Rice Fields from Heilongjiang Province
- 文章编号:
- 9
- 文献标志码:
- A
- 摘要:
- 为促进黑龙江稻区萤蔺的抗药性治理，采用整株剂量反应测定黑龙江省18个萤蔺种群对吡嘧磺隆的抗药性水平，通过盆栽和田间试验测试了9种替代药剂对萤蔺的防治效果。结果表明，18个种群中有4个种群（Sj6、Sj7、Sj8和Sj11）对吡嘧磺隆产生了抗性，抗性指数分别为7.48，13.60，11.42和10.41，其余13个种群为敏感种群，抗性指数为2.03~3.16；盆栽和田间药剂筛选结果发现6种药剂株防效和鲜重防效好于对照药剂10%吡嘧磺隆，其中33%嗪吡嘧磺隆、25%双环磺草酮和460 g·L-1 2甲·灭草松对萤蔺的盆栽和田间药后30 d株防效和鲜重防效达到90%以上。说明，黑龙江省稻区部分萤蔺种群对吡嘧磺隆产生了中等水平以下抗性，推荐在水稻生产中选用33%嗪吡嘧磺隆水分散粒剂、25%双环磺草酮悬浮剂和460 g·L-1 2甲·灭草松可溶液剂等药剂防除稻田萤蔺。
- Abstract:
- In order to promote the resistance control of Scirpus juncoides Roxb. in Heilongjiang rice region， this study aims to clarify the resistance level of S. juncoides in rice fields from Heilongjiang Province to pyrazosulfuron-ethyl and screen effectively herbicides as a substitute for pyrazosulfuron-ethyl in controlling S. juncoides. Whole plant dose response was used to detect the resistance of 18 S.juncoides Roxb. populations which were collected from Heilongjiang Province to pyrazosulfuron-ethyl. The control efficacy of 9 herbicides against S. juncoides was tested by greenhouse experiments and field trials. The results of whole plant dose response showed that there were four populations out of eighteen tested populations which were resistant to pyrazosulfuron-ethyl and the resistance indexes of resistant S.juncoides populations including Sj6， Sj7， Sj8 and Sj11 were 7.48， 13.60，11.42 and 10.41，respectively. In addition， the resistance indexes of other 13 sensitive S.juncoides populations were 2.03-3.16. The greenhouse and field trials showed that the control effect of 6 herbicides were all better than pyrazosulfuron-ethyl 10% WP， in which the control efficacy of 3 herbicides including metazosulfuron 33% WG， benzobicylon 25% SC and MCPA·bentazone 460 g·L-1 SL on weed density and fresh weight after spraying 30 d were all greater than 90%. In summary， because the resistance of some S. juncoides populations in rice fields frome Heilongjiang Province to pyrazosulfuron-ethyl has been from low to medium level， we suggest that S. juncoidesin rice fileds could been controlled by applying metazosulfuron 33% WG， benzobicylon 25% SC and MCPA·bentazone 460 g·L-1 SL.
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备注/Memo
收稿日期：2022-12-03