河南农业科学
河南農業科學
하남농업과학
JOURNAL OF HENAN AGRICULTURAL SCIENCES
2013年
9期
79-82
,共4页
银杏酚酸%甜菜夜蛾%生物活性%作用方式%防治效果
銀杏酚痠%甜菜夜蛾%生物活性%作用方式%防治效果
은행분산%첨채야아%생물활성%작용방식%방치효과
ginkgolic acids%Spodoptera exigua%biological activity%functional pattern%control effect
为探求适于甜菜夜蛾生物防治的新型农药，系统研究了银杏酚酸对甜菜夜蛾的生物活性及作用方式。结果表明，银杏酚酸对甜菜夜蛾的作用方式有多种，包括胃毒、触杀、拒食、内吸等，其中以拒食作用最为显著。胃毒和触杀作用方式随着处理时间的延长，杀虫效果增强，1d后甜菜夜蛾幼虫死亡率普遍较低，0.1 g/L质量浓度下的胃毒效果为28.3％，触杀效果为6.7％；而6 d后的胃毒效果达96.7％，触杀效果达93.3％。拒食作用在用药2 d后即开始表现，且效果随着药物质量浓度的升高明显提高，用药4 d后，甜菜夜蛾在3 mg/L质量浓度下的拒食率达97.12％，其机制可能是干扰试虫的正常蜕皮和影响成虫的羽化。田间喷施银杏酚酸100倍、200倍、400倍液，7 d后防治效果分别为95.2％、85.7％和59.3％。表明银杏酚酸对甜菜夜蛾有较高的生物活性和理想的控制效果。
為探求適于甜菜夜蛾生物防治的新型農藥，繫統研究瞭銀杏酚痠對甜菜夜蛾的生物活性及作用方式。結果錶明，銀杏酚痠對甜菜夜蛾的作用方式有多種，包括胃毒、觸殺、拒食、內吸等，其中以拒食作用最為顯著。胃毒和觸殺作用方式隨著處理時間的延長，殺蟲效果增彊，1d後甜菜夜蛾幼蟲死亡率普遍較低，0.1 g/L質量濃度下的胃毒效果為28.3％，觸殺效果為6.7％；而6 d後的胃毒效果達96.7％，觸殺效果達93.3％。拒食作用在用藥2 d後即開始錶現，且效果隨著藥物質量濃度的升高明顯提高，用藥4 d後，甜菜夜蛾在3 mg/L質量濃度下的拒食率達97.12％，其機製可能是榦擾試蟲的正常蛻皮和影響成蟲的羽化。田間噴施銀杏酚痠100倍、200倍、400倍液，7 d後防治效果分彆為95.2％、85.7％和59.3％。錶明銀杏酚痠對甜菜夜蛾有較高的生物活性和理想的控製效果。
위탐구괄우첨채야아생물방치적신형농약，계통연구료은행분산대첨채야아적생물활성급작용방식。결과표명，은행분산대첨채야아적작용방식유다충，포괄위독、촉살、거식、내흡등，기중이거식작용최위현저。위독화촉살작용방식수착처리시간적연장，살충효과증강，1d후첨채야아유충사망솔보편교저，0.1 g/L질량농도하적위독효과위28.3％，촉살효과위6.7％；이6 d후적위독효과체96.7％，촉살효과체93.3％。거식작용재용약2 d후즉개시표현，차효과수착약물질량농도적승고명현제고，용약4 d후，첨채야아재3 mg/L질량농도하적거식솔체97.12％，기궤제가능시간우시충적정상세피화영향성충적우화。전간분시은행분산100배、200배、400배액，7 d후방치효과분별위95.2％、85.7％화59.3％。표명은행분산대첨채야아유교고적생물활성화이상적공제효과。
Biological activity and functional pattern of ginkgolic acids on Spodoptera exigua (Hübner) were systematically studied .Ginkgolic acids had many functional patterns against Spo-doptera exigua such as stomach poisoning ,contacting toxicity ,anti-feeding and systemic effect etc .,in which the anti-feeding effect was the most significant .The stomach poisoning and contac-ting toxicity experiment showed that the morality was low at 1 day after the treatment .The effects of stomach poisoning and the contacting toxicity were 28 .3% and 6 .7% ,respectively , when ginkgolic acids were diluted to 0 .1 g/L .But the effects increased at 6 days after the treat-ment ,with stomach poisoning and the contacting toxicity effects reaching 96 .7% and 93 .3% ,re-spectively .The anti-feeding effect appeared at 2 days after the experiment ,and with the concen-tration of ginkgolic acids increased ,the effect increased obviously .The anti-feeding effect was 97.12% at 4 days after the experiment when ginkgolic acids were diluted to 3 mg/L .The effect mechanism was isturbing the moulting and eclosion of insects .The control effects reached 95.2% ,85 .7% and 59 .3% at 7 days after spraying ginkgolic acids diluted at 100 ,200 ,400 times in the fields .It suggested that ginkgolic acids had higher biological activity and control efficacy against Spodoptera exigua .
