不同生物农药防治棉田烟蓟马研究初报

试验结果显示,参试药剂对蓟马均有一定防效,施药后1 d 0.3;绿晶印楝素乳油150和225 mL/hm2;赛文1 500和2 250 mL/hm2;2.5;菜喜悬浮剂900和1 500 mL/hm2的防效分别为99.77;和99.75;;84.00;和60.79;;54.28;和56.79;.药后10 d 0.3;绿晶印楝素乳油150和225 mL/hm2的防效分别达到96.06;和96.31;,表明该药对蓟马防治速效性和持效性均较好.

Preliminary Study on Different Bio-Insecticides Controlling Thrips tabaci of Cotton Field in Xinjiang

The experiment of efficacy of the tested insecticides was conducted to Kill Thrips taba which seriously harmed yield in cotton field.The final results showed that all the tested bio-insecticides had certain control effect.After spraying the insecticides one day the effect of 0.3%Azadirachtin(EC)at dosage of 150 mL and 225 mL per hectare;0.18% Abamectin. BT(WP) at dosage of 1 500 mL and 2 250 mL per hectare;2.5% Spinosad at dosage of 900 mL and 1 500 mL could reach 99.77%,99.75%;84.00%,60.79%;54.28%,56.79% respectively.The effect of 0.3%Azadirachtin(EC)at dosage of 150 mL and 225 mL per hectare could reach 96.06% and 96.31% after 10 days of treatment.The conclusion of the experiment also showed that the 0.3%Azadirachtin(EC)maintained had perfect effect on controlling Thrips tabaci with rapid and sustainable way,compared with other ones.