江西农业大学学报
江西農業大學學報
강서농업대학학보
ACTA AGRICULTURAE UNIVERSITATIS JIANGXIENSIS
2014年
6期
1247-1252
,共6页
七星瓢虫%茶蚜%捕食功能反应%生物农药%安全性评价
七星瓢蟲%茶蚜%捕食功能反應%生物農藥%安全性評價
칠성표충%다아%포식공능반응%생물농약%안전성평개
Coccinella septempunctata Linnaeus%Toxoptera aurantii ( Boyer )%predation functional re-sponse%biopesticide%security evaluation
研究不同虫态的七星瓢虫对茶蚜的捕食作用以及4种植物性生物农药对七星瓢虫成虫的毒力与安全性评价。结果表明：不同虫态的七星瓢虫对茶蚜的捕食功能反应符合 Holling－Ⅱ功能反应模型；七星瓢虫1～4龄幼虫和雌成虫捕食茶蚜的理论日最大捕食量分别为24．8，83．3，212．8，434．8，384．6头。随着七星瓢虫幼虫龄期的增加，其对茶蚜的捕食量急骤上升，但瓢虫4龄幼虫对茶蚜的捕食量大于雌成虫。4种植物性生物农药对七星瓢虫成虫的LC50值差异显著。 LC50值由大到小依次为1．8％除虫菊素水乳剂、0．6％氧苦·内酯水剂、0．2％苦皮藤素水剂、0．3％苦参碱水剂，但是，在田间推荐使用剂量下，4种植物性生物农药对七星瓢虫的安全系数由大到小依次为0．6％氧苦·内酯水剂、0．2％苦皮藤素水剂、0．3％苦参碱水剂、1．8％除虫菊素水乳剂。
研究不同蟲態的七星瓢蟲對茶蚜的捕食作用以及4種植物性生物農藥對七星瓢蟲成蟲的毒力與安全性評價。結果錶明：不同蟲態的七星瓢蟲對茶蚜的捕食功能反應符閤 Holling－Ⅱ功能反應模型；七星瓢蟲1～4齡幼蟲和雌成蟲捕食茶蚜的理論日最大捕食量分彆為24．8，83．3，212．8，434．8，384．6頭。隨著七星瓢蟲幼蟲齡期的增加，其對茶蚜的捕食量急驟上升，但瓢蟲4齡幼蟲對茶蚜的捕食量大于雌成蟲。4種植物性生物農藥對七星瓢蟲成蟲的LC50值差異顯著。 LC50值由大到小依次為1．8％除蟲菊素水乳劑、0．6％氧苦·內酯水劑、0．2％苦皮籐素水劑、0．3％苦參堿水劑，但是，在田間推薦使用劑量下，4種植物性生物農藥對七星瓢蟲的安全繫數由大到小依次為0．6％氧苦·內酯水劑、0．2％苦皮籐素水劑、0．3％苦參堿水劑、1．8％除蟲菊素水乳劑。
연구불동충태적칠성표충대다아적포식작용이급4충식물성생물농약대칠성표충성충적독력여안전성평개。결과표명：불동충태적칠성표충대다아적포식공능반응부합 Holling－Ⅱ공능반응모형；칠성표충1～4령유충화자성충포식다아적이론일최대포식량분별위24．8，83．3，212．8，434．8，384．6두。수착칠성표충유충령기적증가，기대다아적포식량급취상승，단표충4령유충대다아적포식량대우자성충。4충식물성생물농약대칠성표충성충적LC50치차이현저。 LC50치유대도소의차위1．8％제충국소수유제、0．6％양고·내지수제、0．2％고피등소수제、0．3％고삼감수제，단시，재전간추천사용제량하，4충식물성생물농약대칠성표충적안전계수유대도소의차위0．6％양고·내지수제、0．2％고피등소수제、0．3％고삼감수제、1．8％제충국소수유제。
The predatory function of Coccinella septempunctata Linnaeus to Toxoptera aurantii ( Boyer) of different ages was investigated,and the virulence and security of four botanical to C.septempunctata were evalu?ated.The results showed that the functional responses of C.septempunctata larvae in different instars and adult females predating on the aphids,T.aurantii fitted the model of Holling II type.The maximum predation rates of first-fourth instar larvae and adult female of C.septempunctata were 24.8,83.3,212.8,434.8 and 384.6 prey/day,respectively. The predation rates of C. septempunctata on T. aurantii increased sharply as the instar pro?gressed.The fourth instar larvae preyed more T.aurantii than the adult female.The differences in the median le?thal concentrations of the four botanical biopesticides for the adults of C.septempunctata was significant.The se?quence of the median lethal concentrations from large to small was 1.8%pyrethrin EW,0.6%oxymatrine prosuler agent,0.2% celangulin agent and 0.3% matrine agent.However,under the condition of the field recommen?ded doses,the sequence of the safety factors of the four botanical biopesticides for C. septempunctata from large to small was 0.6% oxymatrine prosuler agent,0.2% celangulin agent,0.3% matrine agent and 1.8%pyrethrin EW.
