论文部分内容阅读
杜仲夜蛾（Ｎｏｃｔｕｉｇａｎｕｓｕｌｍｏｉｄｅｓｓｐ．）严重危害杜仲叶子，喷药防治，易污染叶子，污染环境，杀伤天敌，且难度大，成本高，防治效果不够理想。根据杜仲夜蛾三龄以后的幼虫，黎明前下树潜伏在杂草或松土内，傍晚上树取食，老熟幼虫下树入土化蛹的习性，在树干上涂刷毒环或绑毒绳，阻杀上、下树幼虫。试验农药为：２０％速灭菊酯乳油、２５％氯氰菊酯乳油，２．５％溴氰菊酯乳油，５％氰苯醚菊酯乳油，２５％菊乐合酯乳油，５％来福宁，２０％灭扫利，５０％辛硫磷乳油等。稀释剂为机油或废机油；浓度按１：１０与农药：机油混合。毒绳为纸绳、草绳、麻绳、线绳、旧布条均可。将成捆的绳材浸入配制好的药液中浸泡３０ｍｉｎ，取出控干，装入塑料袋中备用，随制随用。在幼虫进入三龄阶段，选择晴天，在树干上绑扎１～２道毒绳或用毛笔、漆刷涂刷１～２４毒环。试验结果调查，防治效果均达到９８％以上，这种方法成本低，为喷药防治成本的３０％，不污染杜仲叶片，不会杀伤天敌、省工、省力，安全可靠，更适用于远山、高山和水源缺乏及林木高大，缺少喷药机械的地方。
Eucommia subterraneanus (Noctuiganusulmoidessp.) Serious damage to Eucommia leaves, spraying prevention and control, easy to pollute the leaves, pollute the environment, killing natural enemies, and difficult, high cost, control effect is not ideal. According to Eurasian third instar larvae, prehistoric trees lurking in the weeds or loose soil, the evening tree feeding, mature larvae under the soil into the habit of pupation, brushing the poison ring or poisoned the trunk Rope, blocking the tree larvae. The test pesticides were: 20% vitereau EC, 25% cypermethrin EC, 2.5% deltamethrin EC, 5% cumbenzene EC, 25% cumcoin EC, 5% 20% off Lee, 50% phoxim EC. Thinner for the oil or waste oil; concentration of 1:10 and pesticide: oil mixed. Poison rope for the paper rope, grass rope, hemp rope, rope, old cloth can be. The bundles of rope immersed in the preparation of a good liquid immersion 30min, remove the dry control, into the plastic bag spare, ready to use with the system. In larvae into the third stage, select the sunny, lashing on the trunk 1 to 2 lash or brush, paint brush brushing 1 ~ 24 poison ring. The results of the investigation, the control effect of more than 98%, this method is low cost, 30% of the cost of spraying prevention and control, do not pollute the leaves of Eucommia, will not kill natural enemies, labor-saving, labor-saving, safe and reliable, more suitable for remote mountain , The lack of high mountains and water and tall trees, lack of spraying machinery.