宁夏稻田稗草对丙草胺和氰氟草酯的抗性  

Resistance test of barnyard grass against pretilachlor and cyhalofop-butyl in paddy fields in Ningxia

作　　者：贺奇[1] 殷延勃[1] 陈红兵 强爱玲[1] 马洪文[1] He Qi;Yin Yanbo;Chen Hongbing;Qiang Ailing;Ma Hongwen(Institute of Crop Research,Ningxia Academy of Agricultural Sciences,Yinchuan Ningxia 750004,China;School of Agriculure,Ningxia University,Yinchuan Ningxia 750021,China)

机构地区：[1]宁夏农林科学院农作物研究所,宁夏银川750004 [2]宁夏大学农学院,宁夏银川750021

出　　处：《中国植保导刊》2021年第8期70-73,83,共5页China Plant Protection

基　　金：宁夏回族自治区农业科技自主创新资金(NGSB-2021-13);宁夏自然科学基金项目(2019AAC03153);国家水稻产业体系银川试验站(CARS-01-100);宁夏青年科技人才托举工程项目(宁科协发组字[2017]76号)。

摘　　要：采用滤纸法测定了20个采自宁夏稻田的稗草样本对丙草胺和氰氟草酯的抗性水平,发现稗草样本对丙草胺的总体抗性为低至中等水平:5个样本对丙草胺敏感;4个为低水平抗性;其余11个为中等水平抗性,抗性指数最高为19,ED50为0.0001~0.0019 mL/L。稗草样本对氰氟草酯的总体抗性为中高水平:20个样本中,只有1个对氰氟草酯敏感,ED50为0.0002 mL/L;1个为低水平抗性,ED50为0.0014 mL/L;9个为中等水平抗性,ED50为0.0021~0.0076mL/L;9个为高水平抗性,抗性指数最高达92。供试稗草样本有70%对氰氟草酯和丙草胺均产生了抗性。To determine the resistance of barnyard grass to pretilachlor and cyhalofop-butyl,we tested the susceptibility of20 barnyard grass samples by using the filter paper method.The results showed that barnyard grass in paddy fields in Ningxia had high-level resistance to cyhalofop-butyl,which was higher than that to pretilachlor.There was only one sample that was susceptible to cyhalofop-butyl with the ED50 of 0.0002 mL/L.Among the 19 samples resistant to cyhalofop-butyl,one showed a low level of resistance with the resistance index of 7 and the ED50 of 0.0014 mL/L,nine samples showed a moderate level of resistance with the ED50 from 0.0021 mL/L to 0.0076 mL/L.The other nine samples were highly resistant to cyhalofop-butyl,showed the highest resistance index of 92.90%of the samples showed moderate-or high-level resistance to cyhalofop-butyl.The resistance of the 20 samples to pretilachlor was lower than that to cyhalofop-butyl in general.Of which,five were sensitive to pretilachlor,four showed low-level resistance and the other 11 showed moderate-level resistance.Among the samples moderately resistant to pretilachlor,the ED50 was 0.0001~0.0019 mLl/L,and the highest resistance index reached 19.70%of the samples tested were resistant to both pretilachlor and cyhalofop-butyl.

关 键 词：稗草 丙草胺 氰氟草酯 抗药性 多抗性 

分 类 号：S481.4[农业科学—农药学] S482.4[农业科学—植物保护]