| 摘要: |
| 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／ｈｍ2为宜，蕾期以后为１３５０ｋｇ／ｈｍ2．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％． |
| 关键词: 杀螨剂，棉红蜘蛛，毒力测定，药剂防治 |
| DOI： |
| 分类号:S435.622.2 |
| 基金项目:陕西省自然科学基金及国家农牧渔业丰收计划资助项目 |
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| Effects of Several Insectkides on the Cotton Red Spider Mite and Their Application Methods |
|
Chen Zhijie Zhang Sulin Zhang Mcirong Wu Guangjun,Chen Zhijie Zhang Sulin Zhang Mcirong Wu Guangjun,Chen Zhijie Zhang Sulin Zhang Mcirong Wu Guangjun
|
| Abstract: |
| Elevencotton rod spider mite (Tetranychus cinnabarinus) insectieides
were tested both in labs and cotton fields in Shaanxi Province.The results showed that
10% of Liuyangmycin,20% of Meothrin,20% of Kelthane,25% of Azaform,73% of
Omite,40% of Nuvacron and 50% of Monitor were all effective to the adult mites.Their
effects reached over 90% and lasted about ten days in the fields.50% of Alkron,40% of
Folimat and 40% of Rogor were effectiveless and not suitable to use on a large scale.
Sprayed water quantity was also important in controlling the spider mites.900 kg/hm2
was suitable at seedling stage and l,300 kg at cotton bud and boll stage.A combination
with l% of Urea could promote the control effects and the retrieval of damaged plant.
AS a result.the cotton yield could increase from 16.5% to 23.8%. |
| Key words: miticide,cotton red spider mite （4Tetranychus cinnabarinus),toxicity determination |
