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为筛选出40%粉唑醇·嘧菌酯SC防治西葫芦白粉病最有效的喷施浓度和应用技术,采用随机区组设计,8个处理(参试农药5个浓度处理)、4次重复,施药2次,结果表明:1次药后7 d、2次药后7 d、14 d40%粉唑醇·嘧菌酯SC 750倍液、1 000倍液防效在72.47%~93.21%之间,均比2 000倍液、3 000倍液及2个对照农药极显著提高;1 500倍液的防效也比对照农药显著、极显著提高,在其他试验中具有重演性,且对西葫芦安全、对环境友好、对农产品残留低。40%粉唑醇·嘧菌酯SC 750倍液、1 000倍液可在发病期和感病品种上应用;1 500倍液可用在多种作物上防治白粉病,施药间隔期均为7~10 d。
In order to screen out the most effective spraying concentration and application technique of 40% flutriafol and azoxystrobin SC for the control of zucchini powdery mildew, 8 randomized block design (8 treatments with 5 concentrations of pesticides tested), 4 replicates, The results showed that the control efficacy of flufenol and azoxystrobin SC 750 at 7 days after the first drug and 7 days after the second drug and 14 times at 14 days were in the range of 72.47% -93.21% Were significantly higher than 2000 times, 3000 times and two control pesticides significantly increased; 1 500 times the control effect than the control of pesticides was significantly significantly increased significantly in other trials with repeated nature of the zucchini Safe, environmentally friendly and low on agricultural residues. 40% flufenoxol azoxystrobin SC 750 times, 1 000 times the liquid can be used in the pathogenesis and susceptible varieties; 1 500 times the liquid can be used in a variety of powdery mildew control, application interval of 7 ~ 10 d.