无公害杀虫剂防治韭蛆的药效试验及苦参碱杀虫作用的研究
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为此，作者提出一种有害生物治理的新途径，就是利用相生植物调节目标保护植物周围环境中生物因素之间的相互关系的一种策略，即：相生植保。
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The development of pest – resistant crop varieties is another valuable strategy.
抗有害生物的作物品种的培育是另一类有价值的对策.
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The related records of pest control processes shall be kept by administration department.
虫害控制过程的相关记录由行政部予以保持。
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该害虫在阿勒泰地区1年发生2代，以卵在杨树、柳树等树干和枝条表皮内越冬。
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Main Risky Pest Monitoring of Pinus Massoniana Forests in Wuyi Scenery Spot
武夷山风景区马尾松林主要有害生物的监测
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So pest control, disinfection and alien biological monitoring of port area are essential.
所以口岸地区杀虫消毒、外来生物监测显得十分必要。
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European moth introduced into North America; a serious pest of shade trees.
引入北美洲的欧洲蛾子; 是能遮荫的树的严重的害虫.
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Early sowing at an appropriate time and rotation are economic and effective to control this pest.
轮作倒茬与沟金针虫的防治适时早播和轮作倒茬是减轻危害的经济有效措施；
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Two main methods in sustainable pest control are host plant resistance and biological control.
寄主植物抗性和生物防治是两种主要的可持续的害虫防治方法。
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Where wild rabbits are not generally a pest but as sport and a useful food supply.
野兔在法国一般不被当作有害动物,而被视为打猎取乐的玩物和有用的食物来源.
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The methodology used in pest control is continuously reviewed to enhance effectiveness and efficacy.
该署不断检讨防治虫鼠的方法,务求提高工作成效.
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