insect population的例句大全

This artical introduced briefly some concepts, developments, theories and methods of system science, and the study history and main developments of systematic control of pest insect population.

本文概述了系统科学的一些概念，发展，理论与方法，以及害虫种群系统控制的研究历史与主要进展。

Reproductive behaviors play important roles in insect population: reproduction.

昆虫的生殖行为对其种群的繁衍起着重要作用。

Spatial autocorrelation method used for the estimation of insect population density

昆虫种群密度估计的空间自相关方法

Field research was conducted on 7 host tree species and lac insect population dynamic of lac insect during estival generation.

对紫胶蚧夏代的7种寄主植物生长情况及紫胶蚧死亡状况进行了研究。

Determination of optimum plot size in the simple random sampling of insect population

昆虫种群简单随机抽样最适样方大小的确定

He used aphid fecundity data to elucidate the theoretical effects of antibiosis on insect population dynamics.

他利用蚜虫繁殖力资料说明了抗生作用对虫口动态的理论效应.

Insect population dynamics has always received much attention.

昆虫种群动态的研究一直受到重视.

Stability in Mathematical Model for Phytophagous Insect Population and Host Plant Population

植物性昆虫种群与寄主植物种群的数学模型的稳定性

System science, system control of pest insect population and thinking over study of Heliothis armigera

系统科学与害虫种群系统控制及对棉铃虫研究的思考

Application of c ′ M model to the test of insect population spatial pattern

c'一m回归模型在确定昆虫种群空间分布型中的应用

Using system science methods to study the system control of pest insect population, has an obvious social significance and practical value.

以系统科学方法研究害虫种群系统的控制，具有明显的社会意义和实践意义。

The structure and dynamics of space, number and time of insect population

昆虫种群的空间、数量、时间结构及其动态

Economic threshold for this pest insect was estimated by measuring the increasement rate of population density.

并提出用害虫种群潜在密度确定卷叶螟经济阈值的方法。

Insect distribution type is one of the population attributes, which is of significance either in theoretical ecology or in pest forecast and control.

昆虫的分布型是种群的属性之一，无论在理论生态、虫情预测还是害虫科学治理中，都有十分重要的意义。

Effect of Transgenic Cotton on the Population Dynamics of Insect in Sichuan Cotton Region

四川棉区转基因抗虫棉对棉田昆虫群落的影响

Spatial characteristics were analyzed using geo-statistical methods for population of carpenterworm larvae in two woodlands with different damage levels and egg masses in heavily-infested woodland in order to effectively control the insect and to further study the spatial distribution of its population.

为了有效地控制其危害，深入了解种群的空间结构，利用地统计学方法分析了两种受害程度不同的林分内沙棘木蠹蛾幼虫种群和重度受害林分内卵块的空间分布特性。

The interference index of population control showed a general effect on the pest insect, including side effects on its natural enemies.

即其下代数量明显下降，收到良好效果，干扰作用控制指数表达了杀虫剂对害虫种群的控制作用、包括对天敌干扰作用的总体效果。

According to the principle of population genetics and by using computer numerical simulation comparison has been made on the effectiveness of using rational mixture of insecticides with that of other types of insecticide application including rotation and checkerboard in delaying resistance development of a pest insect species.

本文根据种群遗传学的基本原理，采用计算机数值模拟的方法定量比较了合理混用、轮用、棋盘式使用等用药策略对害虫抗性增长的影响。

The fluctuations of population quantity for pest and neutral insect guilds are basically consistent.

两处理区各害虫、中性昆虫功能团种群数量变动基本一致；

The results tested the pest data showed that the new method may be tried for the mid term or long term forecasting of the population dynamics of insect pests, and it is a good model for application.

研究结果表明，该预测模型为农业害虫种群动态的中长期预测预报提供了一种新的研究方法，是一种优良的模型。