经对果树主要病虫（螨）害在设施条件下的发生危害规律观察，总结出了设施果树病虫害发生特点。
Their occurring characters were summed up based on the observation of occurring regularity of the important pests in fruit trees under installation cultivation.
就河曲县近年来海红果树锈病发生的危害、规律及防治技术进行了综述。
This paper summarizes the hazard, regularity and control technology of the rust disease of Malus micromalus tree in Hequ County.
近几年，铁岭地区稻水象甲的发生面积呈逐年扩大趋势，并表现出一定的发生分布规律及危害特点。
Recent years the occurrence area of rice water weevil is extending increasing with a certain law and harm character.
本文以翔实的资料论述了岩爆的类型、特征及发生规律，产生的条件与危害，以及岩爆的预测、防冶方法及其在工程实践中所取得的成果。
The present paper discussed in detail on the type of rock explosion with its occurring laws of nature, its potential harm and the requisite conditions on which the explosion happens.
从4个方面论述了杨树烂皮病的发生规律及危害性。
It is discussed the occurrence and harmfulness of valsa sordida of poplar in 4 aspects.
只有真正认识山洪特点，包括山洪的危害性、多发性、发生和演进规律，才能主动防御山洪灾害。
Only fully understand the feature of mountain flood including harmfulness, frequently-occurrences and law of happening and progress, mountain flood can be actively prevented.
在对乱架的原因、规律及乱架的危害性进行分析的基础上，提出了减少乱架现象发生的对策。
On the basis of analyzing the reasons, regulations and harms of shelf disorder, this paper puts forward some countermeasure to avoid shelf disorder.
本文综述了桑树根结线虫的生活习性、发生、危害规律及防治方法研究及进展。
The researches ofthe habits, epidemic, harm and prevention and control in mulberry root-knot nematodiasis are reviewed.
本文介绍了二斑叶螨在我国的危害情况和发生规律，分析了其发生与危害的特点，并提出了有效防治对策。
The occurrence characteristics and the harm situation caused by Tetranychus urticae this mite was reported. The control methods against this mite were discussed.
本文结合生产实际阐述了锌在高炉内发生的化学反应及运动规律，分析了锌的危害及其机理，并提出了防治措施。
This (?) article described the chemical reactions inside the blast furnace and the law of motion, analyzed the harmful effects of Zinc and its mechanism, and provided the preventive measures.
在柑桔园，通过对星天牛的发生规律和危害特点的系统调查和研究，找出了防治星天牛危害柑桔树的具体方法。
The experiment aims to investigate the occurrence and harm of longicorn (Anoplophora chinensis Forster ) to orange orchards, and to find out the methods of controlling longicorn.
本文阐述了海水入侵灾害的发生机理、危害和我国目前的概况，并指出了海水入侵的发生规律和发展趋势。
The paper described the developing mechanism and the hazard of the seawater infiltration, and the present state in our country, pointed out developing rule and trend of the seawater infiltration.
报道了水稻污点病在黑龙江省的分布与危害情况、病害症状、病原菌的形态特征、生物学特性、发生规律与防治方法。
This paper outlines distribution and injury of rice spot disease , disease symptom, morphological character of pathogenic bacterium, biological character, genesis regular, and control methods.
采用标准地调查和单株调查的方法，研究了红脂大小蠹的发生和危害规律。
The generation and damage regulation of red turpentine beetle (Dendroctonus valens) are studied with the method of sample plot and tree-by-tree survey.
潜叶蝇在我市危害的寄主植物涉及到14科54种之多，几种潜叶蝇发生的季节动态规律各有不同。
The host-plant of vegetable leaf miner relate to 14 subject 54 varities and there are different population dynamics of kinds of vegetable leaf-miner.
潜叶蝇在我市危害的寄主植物涉及到14科54种之多，几种潜叶蝇发生的季节动态规律各有不同。
The host-plant of vegetable leaf miner relate to 14 subject 54 varities and there are different population dynamics of kinds of vegetable leaf-miner.
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