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田间试验结果表明:25%甲维.毒死蜱水乳剂1500~1800 mL/hm2对水稻白背飞虱具良好的防治效果,其中25%甲维.毒死蜱水乳剂1500 mL/hm2的控虫效果优于25%甲维.毒死蜱乳油同剂量的效果;明显低于吡蚜酮对白背飞虱的控制效果;药后1 d,25%甲维.毒死蜱水乳剂1500~1800 mL/hm2对田间主要蜘蛛有一定的杀伤率(46.51%~56.60%),但杀伤率低于25%甲维.毒死蜱乳油1500 mL/hm2和毒死蜱处理;药后15 d,25%甲维.毒死蜱水乳剂对稻田主要蜘蛛无杀伤作用。25%甲维.毒死蜱水乳剂防治水稻白背飞虱的剂量应不低于1800 mL/hm2。
The results of field experiments showed that 25% carbaryl chlorpyrifos water emulsion 1500 ~ 1800 mL / hm2 had good control effect on the whitebacked planthopper, and 25% of the control chlorpyrifos water control 1500 mL / hm2 was better than the control The effect of the same dose of chlorpyrifos 25% was significantly lower than that of pymetrozine on whitebacked planthopper 1 d after treatment. The effect of 25% of the chlorpyrifos emulsion 1500 ~ 1800 mL / hm2 on the main spiders (46.51% -56.60%), but the killing rate was lower than 25%. The chlorpyrifos chlorpyrifos 1500 mL / hm2 and chlorpyrifos treatment; 15 d, 25% Killing effect. 25% methylparaben. Chlorpyrifos water emulsion dosage for controlling rice white-backed planthopper should not be less than 1800 mL / hm2.