两种生物农药对温室大棚秋番茄病毒病的防治效果

Control Effect of Two Biopesticides Against Autumn Tomato Virus Disease in a Greenhouse

为减轻番茄病毒病的发生危害,采用测报调查、随机区组设计和统计分析等方法,对生物农药香菇多糖+赤·吲乙·芸苔和宁南霉素+赤·吲乙·芸苔防治番茄病毒病进行了田间药效试验。结果表明:在温室大棚秋季番茄病毒病发生较重情况下,每1hm2用0.5%香菇多糖AS 3 000mL+赤·吲乙·芸苔WP 600g、8%宁南霉素AS 900mL+赤·吲乙·芸苔WP 600g,7d施药1次,连续施用4次,药后10d、17d、26d和35d的防治效果均在88%、87%、78%和67%以上,且2种药剂防治效果差异不显著,但均极显著高于盐酸吗啉胍(对照药剂)+赤·吲乙·芸苔。

The field efficacy trait of two biopesticide combinations（Lentinain ＋ Gibberellinheteroauxin-brassinolide（GHB）and Ningnanmycin＋（GHB）against tomato virus disease was conducted in a greenhouse by the methods of forecasting,randomized block design and statistical analysis to reduce occurrence and damage of tomato virus disease.Results：The control effect of applying 300 mL 0.5%Lentinan AS＋600g GHB WP and 900 mL 8% Ningnanmycin AS＋600g GHB WP per 1hm2 for 4times one time every 7don 10 d,17d,26 dand 35dafter spraying under the severe occurrence of tomato virus disease is above 88%,87%,78%and 67%respectively.There is no difference in the control effect against tomato virus disease between two biopesticide combinations but their control effect is higher than Moroxydine hydrochloride＋GHB very significantly.