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为了提高稻田化学药剂的施用效果以及进一步延长其残效期,1978年针对杂交稻南优3号主要害虫进行了药球深施试验,基本上肯定了这项措施的杀虫保苗增产效果.一、试验结果试验田属于中等粉沙质壤土.供试药剂有25%杀虫脒(无锡电化厂)、3%虫螨威粉剂(简称呋喃丹,无锡农药厂)、、40%乐果乳剂(苏州农药厂)、25%“223”乳剂四种.设以下6个处理:(1)25%杀虫脒0.5斤+40%乐果0.25斤.(2)25%杀虫脒1斤+40%乐果0.5斤.(3)25%杀虫脒1.25斤+40%乐果0.75斤.
In order to improve the application effect of chemical agents in paddy fields and further extend the residual effect, deep penetration experiments were conducted on the major pests of hybrid rice Nan You 3 in 1978, basically confirming the effect of increasing insecticidal seedling by this measure. Test results The experimental field belongs to medium silty loam. The tested pesticides were 25% chlordimeform (Wuxi Electrochemical Factory), 3% mite mite powder (referred to as carbofuran, Wuxi Pesticide Factory), 40% dimethoate emulsion (Suzhou Pesticide Plant), 25% “223” emulsion 4. Set the following six treatments: (1) 25% chlordimeform 0.5 kg + 40% dimethoate 0.25 kg (2) 25% chlordimeform 1 kg + 40% Fruit 0.5 kg (3) 25% chlordimeform 1.25 kg + 40% dimethoate 0.75 kg.