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试验表明,10%浏阳霉素、20%灭扫利、20%三氯杀螨醇、25%单甲醚、73%克螨特对棉红蜘蛛成蛛毒力较高,LC_(50)均在100μg·mL ̄(1)以下,田间药效均在90%以上,药效持续10d以上140%久效磷、50%甲胺磷药效次之;而50%乙基1605、40%氧化乐果、40%乐果毒力较低,田间防效较差,不宜在生产上继续应用。田间施药时稀释用水量可左右防效,棉花苗期以900kg/hm ̄2为宜,蕾期以后为1350kg/hm ̄2.在药液中加1%尿素后喷施,可提高防效,促进棉株恢复生长,增产幅度16.5%~23.8%.
The results showed that 10% of liomycin, 20% of teflon, 20% of dicofol, 25% of monomethyl ether and 73% of propargite had higher toxicity to spider mites, LC 50 in 100 μg · mL -1 ~ (1) below, the field efficacy are above 90%, efficacy lasting more than 10d 140% monocrotophos, 50% methamidophos next; and 50% ethyl 1605, 40% omethoate, 40 % Dimethoate lower toxicity, field control efficiency is poor, should not continue to be applied in production. Dilution of field application of water can be about anti-control effect, cotton seedling to 900kg / hm ~ 2 is appropriate, bud stage after 1350kg / hm ~ Spraying with 1% urea in the liquid can improve the control effect and promote the cotton plant to resume growth with a yield increase of 16.5% -23.8%.