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我国使用六六六水平高的二季玉米种植区如山东、河北、河南、安徽、天津等省(市)的一些地区,亚洲玉米螟对六六六产生了不同程度的抗性,最高抗性达13.4倍。而使用六六六较少的一季玉米种植区的吉林、甘肃等省以及南方的一些山区,对六六六未产生或未明显产生抗性。六六六抗性玉米螟种群对尚未广泛应用的甲基对硫磷、对硫磷及辛硫磷未表现交互抗性,对呋喃丹、氰戊菊酯仅表现出不明显交互抗性。总之,我国玉米螟对六六六的抗性为获得性抗性,基本上属六六六单一抗性,通过35种药剂对六六六抗性及敏感玉米螟毒力比较,29种药剂防治六六六抗性玉米螟田间试验,再结合作者关于不同药剂对玉米螟抗性诱变的研究结果(另文发表)进行全面衡量,认为以甲基对硫磷取代六六六为适宜。
In some areas of Shandong Province, Hebei Province, Henan Province, Anhui Province and Tianjin Municipality, the Asian corn borer had different degrees of resistance to 666 in our country. The highest resistance rate 13.4 times. However, Jilin, Gansu and other provinces in the first season of less than 666 and some mountainous areas in the south used no or no obvious resistance to 666. The population of Bt-resistant corn borer showed no cross-resistance to methyl parathion, parathion and phoxim that had not been widely used, and showed only no obvious cross-resistance to carbofuran and fenvalerate. In conclusion, the resistance of the Chinese corn borer to BHC is acquired resistance, which is basically a single resistance to 666, comparing with the virulence of the C66 resistant and sensitive corn borer through 35 kinds of agents, the control of 29 kinds of agents In the field trials of BHC resistant corn borer, combined with the results of the study on the resistance mutagenesis of the Chinese corn borer by different agents (published separately), it is considered that it is suitable to replace BHC with methyl parathion.