在全球范围内，有关病虫害发生率及其对森林和森林产品造成影响的可量化数据有限。
Globally there is limited quantifiable data about pest incidence and their effects on forests and forest products.
笔者在研究四川省竹类病虫害发生及危害特点的基础上，对其成因进行了分析，探索了竹类病虫害的控制途径。
On the base of studying the characteristics of diseases and insect pests in Sichuan province, this paper makes a analysis on the cause of formation and probe into the controlling way?
与麦冬主要病虫害发生规律及防治措施> > 相似的文献。
Occurrence Rule and Control Measure of Main Diseases and Insect Pests on Liriope spicata ( Thunb ) Lour .
在北部各州，只在虫害发生后才进行熏蒸。
In the northern states fumigation is needed only after insect outbreaks occur.
结果表明：枣缩果病的发生与枣果发育期、树龄、枝龄、树势、气象因子、立地条件、虫害、栽培条件及栽培品种有密切关系。
The results showed that the shrink of fruit is closely related with fruit development, tree age, branch age, tree vigor, stand site, weather factor, insect attack, management, and variety.
该系统不仅能实时监测温度和湿度，而且还能监测粮食虫害的发生情况。
This system not only monitors temperature and degree of humidity, but also monitors the occurrence pest of the food.
在油菜生产中，病虫害的发生是油菜高产稳产的限制因子之一。
The prevalence of disease and insect pest is one of the factors, which restrict the yield in rape production.
简述了苏铁病虫害研究概况、主要病虫害发生规律和防治措施，提供了中国已知苏铁病虫害名录并编制出检索表。
Checklists of the known diseases and insect pests were provided, and the identification keys were prepared separately for the known diseases and insect pests of Cycadaceae in China.
本文对发生在我国剑麻上的主要病虫害的症状、发生规律及防治措施作较详细的综述。
The occurrence and control of the main diseases and pests in sisal hemp were summarized in this paper.
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.
法国冬青抗逆性强，病虫害少，偶有刺蛾或蚜虫发生，可用敌敌艮、吡虫啉等农药喷杀防治。
France Holly strong resistance, fewer pests, or occasionally Cie aphids occurred, the enemy can be the enemy of Burgundy, such as pesticide Imidacloprid Fensha control.
介绍了黄瓜常见的几种病虫害的发病症状、发生规律及防治技术，以期对黄瓜病虫害的识别与防治提供技术帮助。
The paper introduces the symptoms, rules and preventive technologies of several common diseases of cucumbers, hoping to be of technological help for the identification and prevention of the diseases.
我国甘薯病虫害危害严重，已经发现报导的有30多种，其中发生比较广泛、为害比较严重的有甘薯黑斑病、甘薯根腐病、甘薯瘟病、甘薯茎线虫病。
More than 30 kinds of diseases and pests have been reported, but the damage of sweetpotato black rot, sweetpotato root rot, sweetpotato stem nematode and sweetpotato bacterial wilt is serious.
本文对公路绿化虫害防治现状、发生特点及防治基本策略进行了初步的探讨。
The paper discussed Present situation and characteristics of insect pest in highway virescence, and put forward a prevention measurement.
通过不同年度间的对比，反映出病虫害发生区域的变化及蔓延方向。
Through the variation between different years, the law of variation and the spreading direction in different regions are reflected.
第1条为防治植物疫病虫害之发生，并制止其蔓延，特制定本法。
Article 1 This act is enacted to control plant diseases and pests and prevent their spread.
针对萍乡森林病虫害发生情况、特点及成因分析，提出有效控制防治对策。
According to analysis of the reason, condition and character of forest disease and insect pest in Pingxiang City, the author put forward effective prevention and control countermeasures.
分析了主要病虫害发生特点。
And the happening characteristics of main diseases and pests were analysed.
对中国各烟区烟田主要虫害的发生情况及防冶研究进行概述，旨在为防冶烟田主要害虫提供科学依据。
The paper outlined the development, preventing and controlling research of tobacco field main pests of all tobacco areas in China.
合理的间作套种可以提高作物产量，减轻农作物病虫害的发生。
Rational intercropping can improve crop yields and decrease occurrence of pests and diseases.
农业灾害发生的频率和造成的损失也逐渐加大目前我国农业病虫害预报工作中存在着很多问题，总体来说科技含量偏低。
Now there are a lot of questions in forecasting the plant diseases and insect pests in our agriculture, the content of the science and technology i.
结果表明：土壤物理、化学、生物学性质的恶化是长春市街路树木病虫害严重发生的主要原因。
Result shows that the main reason for serious occurrence of pest and disease on street afforestation trees is the deteriorating of the physic-chemical and biological properties of soil.
根据当地主要病虫害的发生规律，以农业防治和生物防治为主体，化学防治中以使用无公害农药为主，实现苹果的优质、高产、高效生产。
According to the rules that insects and diseases appear in these area, we chiefly undertake agricultural and biological prevention and cure, and use biorational insecticide in che...
杨树也是一种病虫害发生较多的树种，其中杨树叶枯病作为其中的一项主要病害，严重影响了杨树诸多方面效益。
Poplar is also a species pest occurred more, poplar leaf blight disease is one of the main disease which has a serious impact on many aspects of poplar benefits.
如果你更加细心的话，稻子就不会发生病虫害。(事实上，稻子已经生了病虫害。)
The rice would not have been burnt if you had been more careful.
通过不同年度间的变化，反映出白蚁虫害发生区的变化规律及蔓延方向。
The law of variation and the spreading direction in different regions are reflected.
由于地下病虫害发生在土壤深处，普通施药机械的药液难以深入土层，给防治带来困难。
As the soil pests live in the soil depths, the pesticide spraying by ordinary sprayer can't enter into soil, It is very difficult to get rid of them.
由于地下病虫害发生在土壤深处，普通施药机械的药液难以深入土层，给防治带来困难。
As the soil pests live in the soil depths, the pesticide spraying by ordinary sprayer can't enter into soil, It is very difficult to get rid of them.
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