Further research has shown that caterpillars become virtually immune to the wilt virus as the trees on which they feed respond to increasing defoliation.
进一步的研究表明，毛虫对萎蔫病毒几乎具有免疫力，因为它们赖以为生的树木会对越来越多的落叶做出反应。
The defoliation of millions of acres of trees by massive infestations of gypsy moth caterpillars is a recurring phenomenon in the northeastern United States.
在美国东北部，舞毒蛾毛虫的大规模侵扰导致数百万英亩的树木落叶，这是一个反复出现的现象。
Short-term effects include the disturbances directly associated with the action of the pest, which may cause the defoliation, loss of vigor, or death of trees.
短期影响包括与害虫活动直接相关的干扰，可能导致树木落叶、失去活力或死亡。
On the contrary, the amount of defoliation of 25% reach the ElL.
在郁闭林分中失叶量25％达到经济阈值。
Decomposition of forest defoliation and role of soil animals in Xiao Hinggan Mountains.
小兴安岭森林落叶分解与土壤动物的作用。
When the attack is severe and allowed to continue, repeated defoliation will occur, resulting in a weakened plant.
当攻击是严重的，可以继续，将出现反复落叶，削弱的植物产生的。
Overshadow treatment before defoliation could reduce GA3 content slightly, but its effect on ABA content was little.
落叶前遮荫处理使GA3含量稍有降低，但对ABA影响不大。
Elaine plucked a twig from the offending japonica and set about its systematic defoliation with savage concentration.
埃莱恩从难看的山茶上折了个嫩枝，开始猛烈的收集系统的落叶。
The result indicated that defoliation and different light intensities could change the pattern of biomass partitioning of plants.
结果表明：光照条件不同和叶损失程度不同都会导致植物物质分配方式的变化。
The variational disciplinarian of waterholding quantity and waterholding rate were in consistent with the defoliation in anniversary.
各林区枯枝落叶的持水量及持水率的周年变化规律与落叶规律相一致。
Climatic change affects the plant in the land with sprout, leaf, bloom and defoliation, have caused grave effects on ecological balance.
时空上水热分布的变化影响了陆地植物的发芽、展叶、开花、落叶等物候现象出现的时间，对已有的生态平衡造成了严重的影响。
It mainly damaged leaf and fruit and could result in defoliation and poor fruit value, and the extra cost for controlling was included also.
它主要危害叶片和果实，造成叶片早期脱落，果实产量和品质降低，同时对于该病的防治也增加了成本投入。
However, fertilizing could enhance the compensation ability, and promote the plant species tolerance against defoliation. Our results confirmed the improved limiting resource model.
但施肥可显著提高垂穗披碱草的补偿能力，增加耐牧性，证实了改进后的限制资源模型的预测。
Potted Ficus ginseng was used to study the effects of different postharvest temperature on the changes of defoliation and stress-resistant physiology during storage and transportation.
以盆栽榕树为试验材料，探讨不同贮运温度对盆栽榕树落叶及抗性生理的变化。
The change of storage nutrition substance in Seriphidium transilien's roots, such as soluble proteins, soluble sugar, deoxidizing sugar and starch, were studied under various defoliation intensities.
以新疆蒿类半灌木荒漠草地建群种伊犁绢蒿为材料，探讨刈割强度对其根系贮藏营养物质的影响。
The change of storage nutrition substance in Seriphidium transilien's roots, such as soluble proteins, soluble sugar, deoxidizing sugar and starch, were studied under various defoliation intensities.
以新疆蒿类半灌木荒漠草地建群种伊犁绢蒿为材料，探讨刈割强度对其根系贮藏营养物质的影响。
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