生物农药防治温室秋番茄病毒病效果研究

为减轻番茄病毒病的发生危害,减少化学农药用量、残留和环境污染,该文采用测报调查、随机区组设计和统计分析等方法,开展了生物农药香菇多糖+赤·吲乙·芸薹(碧护)和宁南霉素+赤·吲乙·芸薹防治番茄病毒病田间药效试验。结果表明:在温室大棚秋季番茄病毒病发生较重情况下,每667m2用0.5%香菇多糖水剂200m L+碧护可湿性粉剂40g、8%宁南霉素水剂60m L+碧护可湿性粉剂40g,7d施药1次,连续施用4次,药后10、17、26、35d,防治效果均在88%、87%、78%和67%以上,且2药剂防治效果差异不显著,香菇多糖+碧护极显著高于盐酸吗啉胍(对照药剂)+碧护,宁南霉素+碧护显著高于盐酸吗啉胍+碧护。因此,香菇多糖+碧护和宁南霉素+碧护不仅可以作为防治病毒病的理想药剂,而且可以作为现代农业示范区、无公害农产品、绿色农产品和有机农产品防治病毒病的理想药剂。

Effect of Biological Pesticides on the Prevention and Treatment of Autumn Tomato Virus Diseases in Greenhouse

In order to alleviate the damage of tomato virus diseases,reduce chemical pesticide consumption and resi?due,and prevent environmental pollution,the methods of forecasting,randomized block design and statistical anal?ysis were used in field efficacy tests of two biological pesticides of Lentinan+gibberellin-heteroauxin-brassinolide (GHB)and Ningnanmycin +GHB. The results showed that,when the autumn tomato virus disease was serious, 0.5%Lentinan AS 200mL+GHB WP 40g and 8%Ningnanmycin AS 60mL+GHB WP40g per 667m2 were applied for 4 times,once in 7 days,and the control effects on the 10th ,17th ,26th and 35th day were above 88%,87%, 78%and 67%. The difference between the two biological pesticides was not signitiicant,while the control effect of Lentinan+GHB was significantly higher than that ofmoroxydine hydrochloride(CK)+GHB,and the control effect of Ningnanmycin+GHB was significantly higher than that ofmoroxydine hydrochloride+GHB.These results indicated that Lentinan+GHB and Ningnanmycin+GHB were the ideal biological pesticides,which could be used not only con?trolling tomato virus diseases,but also for realizing modern,pollution-frce,green and organic agricultural production.