开普罗介绍说，驳船上的用水只有普通田地的十分之一，也没有农业径流，使用生物天敌防治像瓢虫这样的温室蔬菜害虫而不是化学农药。
The barge used one-tenth as much water as a comparable field farm. There was no agricultural run-off, and chemical pesticides were replaced with natural predators such as ladybirds.
每次降雨记实日期、降雨量，以便寻找每种害虫的出土成仙数目与降雨的关系，从而推断出化学防治适期。
Every time the date, rainfall, rainfall saga to look for each pests immortal and rain unearthed the number relations, so as to deduce chemical control optimum stage.
化学防治——利用化学杀虫剂来防治害虫。
Chemical control - using chemical pesticides to control pests.
利用诱捕器防治害虫应与化学防治相结合。
Use the trap insect pests prevention and control should be combined with chemical control.
肥料和用以防治或铲除杂草及扑灭害虫的化学品，防止动植物病害的新方法，都是使农业增产的原因。
Use of fertilizers, chemicals to control or destroy weeds and harmful insects, and improved methods of controlling plant and animal diseases has boosted farm production.
蚜虫是一种严重危害农业生产的害虫，长期以来，对蚜虫的防治主要依靠化学农药。
Aphid is one kind of destructive pest in agricultural production. For a long time, the prevention and control of aphids has been mainly depended on chemical pesticide.
面临有机果园不准使用化学合成农药的限制，果树害虫防治成为瓶颈问题。
To be confronted with restricting chemosynthesis pesticides used in organic orchards, insect pest control had become a bottleneck.
研究者说。聪明的蜘蛛利用一种自身的化学制品A把蚂蚁困在他们的金色圆形蜘蛛网里，这样蜘蛛就变成了一个害虫防治机构。
Clever spiders a chemical used by golden orb web spiders to keep ants at bay could make a useful pest control agent, say researchers.
通过田间药效试验，筛选了一批高效、低毒、低残留农药，规范了无公害药材的害虫化学防治技术，生物农药使用比例上升，完善了害虫综合防治技术。
Through outdoor effect test, select a set of high effect and low poison and low remnant pesticide, standardize the technique of chemical control, improve the proportion of the use of bio-pesticide.
化学农药防治森林害虫随着人们环保意识不断增强在应用中越来越慎重。
It becomes more and more carefully to control forest insects by pesticide because the people's senses of environmental protection have been constantly strengthened.
施用苏云金杆菌菌剂防治贮烟害虫后对烟叶的化学成分无影响；
The chemical component in tobacco leaves was not change for the application of Bacillus thuringiensis preparation;
本文讨论了利用初始EF值来预测天敌对害虫的功能作用及生物防治与化学防治协调的可能性。
The possibility of using the initial EF value to predict the enemy function and to coordinate the pest control strategies with natural enemies and with chemical insecticides was discussed.
本文讨论了利用初始EF值来预测天敌对害虫的功能作用及生物防治与化学防治协调的可能性。
The possibility of using the initial EF value to predict the enemy function and to coordinate the pest control strategies with natural enemies and with chemical insecticides was discussed.
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