自然控制

寒冷的春季会自然控制昆虫的数量。

A cold spring will provide a natural check on the number of insects .

病原真菌是蚜虫的重要自然控制因子。

Fungal pathogens are important natural biological control agents of aphids .

云南甘蔗害虫天敌及其自然控制作用

Natural enemies of sugarcane pest and their roles in natural control

适合农业可持续发展的农业害虫自然控制策略

A Discussion of Natural Control Strategies for Agricultural Pests Control

让一些土地休耕是自然控制昆虫数量的办法。

Leaving some fields fallow provided a natural check on insect populations .

油松刺槐混交林对赤松毛虫自然控制初步研究

Natural control against Dendrolimus spectabilis in the mixed pine and locust forest

森林植物群落多样性与虫害自然控制力的研究进展

Discussion on Relationship between Forest Biodiversity and Forest Pest Natural Control Capacity

试论农业害虫的自然控制

A discussion on natural control strategies for agricultural pest

甘薯天蛾的寄生性天敌及其自然控制作用

Prospect on the Parasitical Enemies and Its Natural Control Effect of Agrius convolvuli

节瓜蓟马的主要捕食性天敌及自然控制作用

Natural predators of Thrips palmi ( Karny ) and their role in natural control

三种瓢虫对大豆蚜自然控制研究

Natural Control of Three Ladybugs on Soybean Aphid

并认为森林虫害自然控制力的本质是森林植物群落多样性的生态系统功能。

Forest pest natural control capacity is considered to be ecosystem function of forest plant diversity .

分析森林有害生物生态控制的特点、理论基础以及技术基石；认为自然控制论和自组织理论是森林有害生物生态控制的理论基础，森林有害生物生态控制的技术基石是森林生态系统管理；

Natural cybernetics and self_organization theory are the academic bases and forest ecosystem management is technological one .

浮游动物生物量的波动可能是抑制大型水母爆发加剧的自然控制机制之一。

The fluctuation of zooplankton biomass might be one of the natural control mechanisms of large bloom .

褐背小萤叶甲是烟田蓼科杂草的重要天敌，对蓼科杂草具有良好的自然控制作用。

Galerucella grisescens is an important natural enemy which could significantly control Polygonaceae weeds in tobacco fields .

稻田飞虱与天敌数量消长关系及其自然控制作用考查

Studies on the relationships of population fluctuation between rice planthoppers and natural enemies and natural control effects

氮肥对水稻主要害虫种群及其天敌自然控制作用的影响

Impact of Nitrogen Fertilizer on Populations of Insect Pests and the Natural Control Function of Natural Enemies in Rice

应用自然控制论原理探讨了森林资源可持续性宏观调控的系统优化控制模型。

Finally , the paper founds an optimizing controlling model for Macro-adjustment system by using principle of natural cybernetics .

从苹果园植被多样化看叶螨天敌群落自然控制的生态学效应

Analysis on the ecological effect of control of predacious complex on spider mites from vegetation diversity in apple orchard

这些捕食螨在芒果树上对害螨的自然控制能力最强，而在柑桔树上的自动调节功能最小。

They had mostly powerful natural control ability to injurious mites in mango tree but less capable in citrus tree .

虫霉目真菌包含若干蚜科专化性病原种类，常引发世界范围内的蚜虫流行病而对蚜虫种群起着举足轻重的自然控制作用。

The fungal order Entomophthorales includes numerous species of obligate aphid pathogens that frequently cause epizootics in aphid populations worldwide .

这是一种自然控制生育的方法，称为哺乳闭经避孕法。

This is a natural ( though not fail-safe ) method of birth control known as the Lactation Amenorrhoea Method .

氮肥对水稻叶冠层捕食性天敌种群及其自然控制能力的影响

Dynamics of predators in rice canopy and capacity of natural control on insect pests in paddy fields with different nitrogen regimes

论述了学科交叉点的锐意创新与实现自然控制的关系。以及对在这一研究过程中，应注重发挥哪些学科、领域的优势和大胆开拓创新的交叉学科领域等提出了一些看法。

Also the relationship of the innovation with keen determination in the intersection of disciplines and controlling of nature is illustrated .

对小说体现的的生态灾难并原因进行解剖：自然控制论、利已主义、信仰的丧失。

It analyzes the causes of the crisis reflected in the novel : human manipulation nature , egoism and malfunctions of belief .

这些结果和方法可应用于种群时空动态格局及自然控制机理的研究。

The results and methods are applicable to the temporal and spatial dynamics of insect population and the insect pest ecological control .

在塔城地区，大部分年份麦双尾蚜受自然控制因素制约而为害较轻。

In most years , the aphid was controlled under natural regulators , especially its natural enemies and no insecticide application was needed .

介绍了云南省烟草主要害虫天敌资源和天敌昆虫的自然控制作用。

The main natural enemies of the pests on tobacco of Yunnan and their role on natural control of the pests were reviewed .

前者的机制主要是药剂削弱了自然控制作用，后者主要是药剂引起害虫的毒物兴奋效应及补偿作用（刺激产卵）。

Ecological resurgence is attributed to pesticides weakening natural control systems whereas physiological resurgence refers to pesticide-induced stimulation of pest reproduction or hormesis .

讨论了工程地质学与环境工程学的学科交叉的锐意创新与实现自然控制的关系，按照科学发展观的理论，探讨了实现工程建设与环境全面、协调、可持续发展的基本对策。

According to the theory of scientific development , countermeasures are discussed for integrated , coordinate , sustained development of engineering construction and environment .