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[目的]通过室内药剂筛选为田间有效防治新疆红枣黑斑病提供理论依据。[方法]通过菌落生长法和孢子萌发率法测定和比较12种杀菌剂对新疆红枣黑斑病病原菌(Alternaria sp.)的室内毒力。[结果]40%氟硅唑EC、50%喹啉铜WP的EC50值均小于1 mg/L;50%醚菌酯WG、50%腐霉利WG、50%异菌脲WP的EC50值均小于25 mg/L。孢子萌发测定:40%氟硅唑EC、50%异菌脲WP等7种药剂对分生孢子萌发的抑制率均达85%以上。[结论]氟硅唑、喹啉铜2种药剂对病菌菌丝生长的抑制活性最好,醚菌酯、腐霉利、异菌脲3种杀菌剂次之。
[Objective] The research aimed to provide theoretical basis for effective prevention and control of black spot disease of jujube in Xinjiang through screening of indoor pharmacy. [Method] The indoor toxicity of 12 fungicides to Alternaria sp. Of Xinjiang jujube was determined and determined by colony growth method and spore germination rate method. [Result] The EC50 values of 40% flusilazole EC and 50% quinoline copper WP were both less than 1 mg / L. The EC50 values of 50% ketoxystrobin WG, 50% diflubenzuron WG and 50% iprodione WP Less than 25 mg / L. Spore germination determination: 40% flusilazole EC, 50% iprodione WP seven kinds of agents on conidial germination inhibition rate reached more than 85%. [Conclusion] The two fungicides, flusilazole and quinoline copper, had the best inhibitory effect on the mycelium growth of fungi, followed by the fungicides of kresoxim-methyl, pyrethrum and iprodione.