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[目的]明确黑龙江省反枝苋种群对氟磺胺草醚的抗药性水平。[方法]采用整株生物测定法分别测定黑龙江省36个地区反枝苋种群对氟磺胺草醚的抗药性。[结果]牡丹江市东宁县绥阳镇爱国村的反枝苋种群的GR50最小,为72.9113 g a.i./hm~2,对氟磺胺草醚最敏感。佳木斯市汤原农场经济作物园区的反枝苋抗性指数为5.55,为低水平抗性。黑河市嫩江地区反枝苋的抗性指数为40.65～101.74,为高水平抗性。[结论]黑龙江省不同地区大豆田反枝苋对氟磺胺草醚的抗药性有明显的差异,黑河市嫩江地区的反枝苋对氟磺胺草醚产生了高水平抗性,其他地区处于敏感或低水平抗性阶段。
[Objective] The research aimed to clarify the resistance level of Fusarium oxysporum L. in Heilongjiang Province. [Method] The whole plant bioassay was used to determine the resistance of Flos Amaranthusia to 36 populations in Heilongjiang Province. [Result] The population of A. gramineus population in Aiguo village, Suiyang town, Dongning county, Mudanjiang City was the lowest, which was 72.9113 g a.i./hm~2, the most sensitive to fomesafen. Jiamusi Tangyuan Farm Economic Crops Park Anti-Amaranth resistance index of 5.55, low-level resistance. The resistance index of Amaranthus retroflexus in Nenjiang of Heihe was 40.65 ~ 101.74, which was a high level of resistance. [Conclusion] The resistance of fesidifos to soybean in the different regions of Heilongjiang Province was significantly different from that of fomesafen. Herbarium of Nigra in Nenjiang of Heihe City had a high level of resistance to fomesafen, while other areas were sensitive or low Horizontal resistance stage.