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1981—1987年作者进行了稻瘟病菌Pyricularia oryzae抗药性研究。结果表明:玉溪、蒙自草坝、西双版纳良种场等地的稻瘟菌,对EBP、IBP已明显产生抗药性。并证实扰EBP的稻瘟菌,对IBP、EDDP、FuJi-1也有交互抗性。从而提出必须尽快控制抗性的发展。建议防治叶瘟可在IBP、EDDP、Fuji-1中任选1种,如用IBP,就避免用Fuji-1,防治穗颈瘟,宜用Tricyclazole,且每年限用1—2次。另外,在室内还用EBP诱导抗性菌成功。且发现室内获得的抗性菌,在田间接种后,抗性会有不同程度的下降缓解。相反,田间分离到的抗性菌,接种后抗性表现较稳定,下降缓解不显著。当换用杀菌机制不同的Tricyclazole进行防治,抗性菌接种区仍能取得较好的防治效果.
1981-1987 The author conducted a study on the resistance of Pyricularia oryzae to Magnaporthe grisea. The results showed that Magnaporthe grisea in Yuxi, Mengzicaoba, Xishuangbanna and other places had obvious resistance to EBP and IBP. And confirmed that EBP-infected Magnaporthe grisea, IBP, EDDP, FuJi-1 also cross-resistance. This suggests that the development of resistance must be controlled as soon as possible. Proposed prevention and control of leaf blast in IBP, EDDP, Fuji-1 optional 1, such as the use of IBP, to avoid Fuji-1, prevention of panicle blast, should be Tricyclazole, and limited 1-2 times a year. In addition, EBP-induced resistance bacteria were also successfully used indoors. And found that indoor acquired resistance to bacteria, inoculation in the field, the resistance will have varying degrees of relief. On the contrary, the resistant bacteria isolated in the field showed a more stable resistance after inoculation, with no significant decrease in response. When switching to Tricyclazole with different bactericidal mechanism for prevention and treatment, the resistant bacteria inoculation zone can still achieve better prevention and cure effects.