草原与草坪
草原與草坪
초원여초평
GRASSLAND AND TURF
2014年
4期
84-87
,共4页
苜蓿叶象%条纹根瘤象%毒力%杀虫剂
苜蓿葉象%條紋根瘤象%毒力%殺蟲劑
목숙협상%조문근류상%독력%살충제
H ypera postica%Sitona lineellus%toxicity%insecticide
采用喷雾法对8种药剂对苜蓿叶象及条纹根瘤象进行室内毒力测定,结果表明：2%噻虫啉微囊粉剂对苜蓿叶象四龄幼虫的活性较高,其 LC50为107.408 mg/L,4.5%高效氯氰菊酯微乳剂的活性最低,其 LC50为549.342 mg/L；8种杀虫剂对三龄幼虫的 LC50为140.176~453.784 mg/L。40%毒死蜱乳油对条纹根瘤象成虫活性较高,其 LC50为71.017 mg/L,其次为2%噻虫啉微囊粉剂,其 LC50为80.157mg/L。
採用噴霧法對8種藥劑對苜蓿葉象及條紋根瘤象進行室內毒力測定,結果錶明：2%噻蟲啉微囊粉劑對苜蓿葉象四齡幼蟲的活性較高,其 LC50為107.408 mg/L,4.5%高效氯氰菊酯微乳劑的活性最低,其 LC50為549.342 mg/L；8種殺蟲劑對三齡幼蟲的 LC50為140.176~453.784 mg/L。40%毒死蜱乳油對條紋根瘤象成蟲活性較高,其 LC50為71.017 mg/L,其次為2%噻蟲啉微囊粉劑,其 LC50為80.157mg/L。
채용분무법대8충약제대목숙협상급조문근류상진행실내독력측정,결과표명：2%새충람미낭분제대목숙협상사령유충적활성교고,기 LC50위107.408 mg/L,4.5%고효록청국지미유제적활성최저,기 LC50위549.342 mg/L；8충살충제대삼령유충적 LC50위140.176~453.784 mg/L。40%독사비유유대조문근류상성충활성교고,기 LC50위71.017 mg/L,기차위2%새충람미낭분제,기 LC50위80.157mg/L。
Toxicities of the eight insecticidesagainst H ypera postica and Sitona lineellus were testd in this paper.The result showed that thiacloprid (2%)had higher toxicities to 4th larvae of H ypera postica .the LC50 was 107.408 mg/L.Pyrethroid(4.5%)had the lowest toxicities to 4th larvae of H ypera postica .the LC50 was 549.342 mg/L.The range of LC50 of eight insecticides against 3rd larvae of H ypera postica were from 140.176 to 453.784 mg/L.The chlorpyrifos (40%)had the higher toxicity against Sitona lineellus ,the LC50 was 71.017 mg/L.The thiacloprid (2%)had the lower toxicity to Sitona lineellus .The LC50 was 80.157 mg/L.
