Chemical control is the last resort.
化学防治是最后的措施。
As you see, I am under nervous as well as chemical control.
正如你所知道的那样，我不但受化学的控制，还受神经的控制。
Chemical control - using chemical pesticides to control pests.
化学防治——利用化学杀虫剂来防治害虫。
Chemical control is an important technology to increase soybean yield.
化控是大豆一项重要的增产技术。
This chemical control was effective to prevent cedar branch- withering .
化学防治能有效的控制雪松枝枯病。
The source, categories and chemical control of the stickies are outlined in this paper.
本文简述了胶粘杂质的来源、分类及化学控制方法。
Use the trap insect pests prevention and control should be combined with chemical control.
利用诱捕器防治害虫应与化学防治相结合。
The control of superficial scald mainly consists of chemical control and non-chemical control.
虎皮病的防治主要包括化学和非化学防治。
Control methods were offered such as silviculture, quarantine, biological and chemical control.
提出了采取营林措施、检疫措施、人工、生物、化学防治等防治措施。
He said a last choice would be chemical control. But he suggests using management methods first.
病虫害防治最后的办法才是化学控制，首先应该使用综合防治办法。
A combination of agronomical and chemical control measures is desirable for its effective control.
农业和化学防治结合，能有效地控制斑潜蝇的为害。
Improper chemical control, may be prejudicial to the activities of birds and need special attention.
不当的化学防治，有可能损及鸟类的活动，需要特别注意。
Methods:adhesive killing method for density investigation, and cockroach gel bail for chemical control.
方法：密度调查采用粘捕法，化学防治采用高效灭蟑毒饵；
Objective To study the action of chemical control on rodent community structure for rodent forecast and control.
目的探明灭鼠对害鼠群落结构的影响，为鼠害预测和防制提供依据。
Methods Adhesiving killing method for density investigation, and Premise cockroach gel bait for chemical control.
方法密度调查采用粘捕法，化学防治采用拜灭士杀蟑胶饵。
However, despite the successes of the sulfa drugs, most infectious diseases still were not under chemical control.
然而，尽管磺胺药物已经成功，但大多数传染病仍然无法进行化学药物治疗。
It is unavailable to waste pesticides and pollute the environment by using conventional chemical control of insect pest.
使用传统的化学防虫不可避免地会造成农药浪费和环境污染。
Integrated control measures such as artificial control and chemical control were taken and the control effect was above 87%.
采取人工防治、化学防治等综合防治技术，防治效果可达87%以上。
Experiments on chemical control of weeds in sunlight greenhouse, big plastic shed, waste slope land and basic farmland were carried out.
在日光温室、塑料大棚、土坡荒地和基本农田条件下，应用化学除草剂进行防治试验。
In order to control Eriosoma lanigerum in Yuxi effectively, the experiment on the harm characteristics and chemical control was conducted.
为有效防治易门地区危害渐趋严重的苹果棉蚜，开展了该虫害危害特性以及药剂防治的研究。
This paper will evaluate the situation of biocontrol and chemical control of diseases as well as creation of bio-seed coating agent in maize.
对玉米土传病害的化学与生物防治以及生物型种衣剂的研究进展进行了评述。
According to modern bio-mediation and chemical control technologies, some tentative plans to prevent or reduce the concentrations of heavy metals.
同时结合现代生物修复和化学治理技术，提出一些预防和治理海洋沉积物中重金属污染方面的设想。
And in the chemical control, the potential application of Chitosan in prevention of heavy metal pollution in Marine sediments was introduced in detail.
化学治理技术中，较详细介绍了壳聚糖在治理海洋沉积物中重金属污染的潜在应用价值。
In this paper predator-prey systems with periodic impulsive effect concerning pest control are proposed through biological control and chemical control.
摘要本文通过生物控制和化学控制提出了具有周期脉冲效应与害虫控制的捕食系统。
At the beginning of the reaction, the dissolution process is a chemical control process, and the reaction mechanism is in accordance with shrink core model.
反应的最初阶段属于化学反应控制过程，反应机理符合缩芯模型。
Methods 1%yekang cockroach gel bait and 0.5% Permanone smoke fog were used for chemical control. Adhesive killing method was applied in density investigation.
方法采用1%晔康杀蟑胶饵和0.5%氯菊酯的烟雾剂，密度监测采用粘捕法。
To suppress the spread of the ragweed, there have been a lot of studies on their chemical control, physical control, plant displacement and biological control.
为抑制其种群蔓延，前人开展了化学防治、物理防治、植物替代和生物防治等对豚草的防控研究。
Methods: To take the combination of environmental control, chemical control and physical control of flies to reduce fly density in large places for activities.
方法：采用环境治理、化学防制与物理防制相结合的方法，对场馆内外进行灭蝇。
Methods: To take the combination of environmental control, chemical control and physical control of flies to reduce fly density in large places for activities.
方法：采用环境治理、化学防制与物理防制相结合的方法，对场馆内外进行灭蝇。
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