2) Occurrence
[英][ə'kʌrəns] [美][ə'kɝəns]
发生为害
1.
Study on the Occurrence Character of Bagging Aphanostigna Jacusuiensis and its Integrated Control;
套袋梨黄粉蚜发生为害特点及综合防治技术研究
2.
Occurrence and Its Integrated Control Tactics of Bemisia tabaci in Cotton Fields of Shaanxi Province;
陕西棉田烟粉虱发生为害与综合防治对策
3.
This paper definitely reports its distribution and host trees,and briefly reviews research advances on biological characteristics,occurrence characteristics and control measures.
本文明确了该虫的分布和取食寄主情况,较为系统地阐述了其生物学特性、发生为害及防治措施。
3) Pest Dynamic
害虫发生动态
1.
Study on the Consultation System about Pest Dynamic and Control in the Ornamental Plant Management;
园林害虫发生动态监测和治理咨询系统
4) Occurrence
[英][ə'kʌrəns] [美][ə'kɝəns]
发生动态
1.
The occurrence,damage and action threshold of Chinese rice grasshopper, Oxya chinensis,in rice field;
稻田中华稻蝗发生动态、危害损失及防治指标
2.
Studies on the occurrence and bionomics of Liriomyza sativae in Luoyang;
洛阳市美洲斑潜蝇发生动态及生物学特性研究
3.
The population age was divided into five categories (young sub adult, adult Ⅰ,adult Ⅱand elder),according to the body weight and reproductive characters The control countermeasures has been put forward based on the occurrence rule and prevention technique in recent years.
1996～ 2 0 0 0年通过对贵州省余庆县黑线姬鼠种群发生动态的调查 ,结果表明 ,黑线姬鼠主要分布于稻田、旱地耕作区 ,是余庆县农田害鼠优势种 ,占总鼠数的 96 。
5) population dynamics
发生动态
1.
Analysis of population dynamics and trends of future outbreaks of the Oriental migratory locust in Hebei;
河北省东亚飞蝗发生动态及未来灾变趋势分析
2.
Occurence and population dynamics and control indics of Apodemus agrarius in nonglutions rice rigion were studiesin spring and autumn in 1992～1994.
１９９２～１９９４年在中粳稻区研究了黑线姬鼠发生动态和春秋季防治指标。
6) dynamics
[英][dai'næmiks] [美][daɪ'næmɪks]
发生动态
1.
Studies on the Population Dynamics and Control of the Main Pests in Maize Field Mulched by Plastic Film;
地膜覆盖玉米田病虫草害发生动态及防治研究
2.
The dynamics of the cotton bollworm was studied and the reasons for its outbreak were discussed and analyzed.
研究安徽省棉区棉铃虫的发生动态 ,探讨它的爆发原因 ,指出沿江、淮北两棉区棉铃虫发生规律存在明显差异 ,认为食料、雨量和天敌是影响棉铃虫发生的主要因
3.
The objective was to determine pest categories and dynamics of these 3 rice production areas.
对云南省寻甸县、弥勒县、沾益县主要水稻生产区的9个村庄151块水稻主栽品种稻田有害生物种类组成及其发生动态进行了系统调查。
补充资料：为害
1.造成祸害;加害。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条