Plantings of cotton bioengineered to produce its own insecticide against bollworms, a major cause of crop failure, sustained little bollworm damage until this year.
经过生物工程改造的棉花种植场可以生产自己的抗棉铃虫杀虫剂，而棉铃虫是造成农作物歉收的主要原因，直到今年，棉铃虫的危害都很小。
By setting up bollworm's data base which strengthen forecast work of cotton bollworm.
通过建立棉铃虫数据库来强化棉铃虫的预测预报工作。
There were significant differences among the mortalities of the cotton bollworm under different humidities.
相对湿度发生变化时，感病棉铃虫死亡速度和死亡率明显不同。
The spatial site distribution of the plant leaves didn't influence the expression of the resistance to bollworm.
叶片在棉花植株上的空间分布位置不影响对棉铃虫抗性的表达。
The total pest controlling input was reduced by 70%, of which the bollworm controlling input was reduced by 90%.
总治虫用药投入减少70%，其中防治棉铃虫用药投入减少90%。
It implies that the decreased nerve sensitivity is an important pyrethroid resistance mechanism of cotton bollworm.
这些结果说明神经敏感性降低是棉铃虫对拟除虫菊酯抗药性的重要机制。
Electroantennogram responses of female cotton bollworm (Helicoverpa armigera) to several plant volatiles were tested.
测定了棉铃虫(Helicoverpaarmigera)雌蛾对几种植物挥发物的触角电位反应。
The simulated results suggest that uncertainty exists in some extent to make long term forecast of the bollworm dynamics.
本文的研究结果说明，对棉铃虫中长期发生态势的预测，存在一定程度的不确定性。
The combination of mass media and person-to-person media is the best model of extending transgenic bollworm resistant cotton.
大众传播媒介与人际传播媒介相结合是抗虫棉传播的最佳模式。
The pink bollworm, whose larvae winter in the seeds of cotton in the storerooms, may cause a 20per cent loss in ginned cotton.
粉红色螟蛉的幼虫在库房棉花籽中过冬，可能使皮棉减产两成。
The pink bollworm, whose larvae winter in the seeds of cotton in the storerooms, may cause a 20 per cent loss in ginned cotton.
粉红色螟蛉的幼虫在库房棉花籽中过冬，可能使皮棉减产两成。好评(0)。
Antipersonnel force of four types of high penetrating insecticides controlling against the larvae of cotton bollworm was tested in laboratory.
用高渗酮增效的四种不同的高渗农药制剂在室内对棉铃虫幼虫的杀伤力进行了试验。
These results suggest that peanut must be less suitable for development and reproduction of the cotton bollworm as compared with cotton and corn.
基于这些结果，作者认为棉花、玉米比花生更适合于棉铃虫的生长发育和繁殖。
The soluble powder:polythiocycloalkanes, has good effective on the control of pest insects such as two-spotted spider mite, cotton bollworm and citrus red spider mite ect.
简介了产品的毒性毒理概况和应用范围，尤其是防治棉红蜘蛛、棉铃虫、柑桔红蜘蛛等害虫的良好特性。
The effect of plant allelochemicals on cotton bollworm susceptibility to insecticides may be determined by the integrated results of the detoxifying enzymes and AChE changes.
说明植物次生物质对棉铃虫耐药性的影响是解毒酶和靶标酶改变的综合结果。
Based on the direct benefit and cost, the economic threshold of the third generation bollworm was calculated to be 35 eggs per 100 plants for all the levels of soil fertility.
根据防治的直接收益与直接代价，算出了第三代棉铃虫的经济阈值为百株累计卵量35粒，这一阈值可适用于不同肥力水平的地块。
By studying the binding affinity, some special binding odorants can be selected. This may provide the theoretical basis for developing attractants and repellents of the cotton bollworm.
通过研究该蛋白与小分子的结合，筛选出合适的气味，从而为开发棉铃虫引诱剂及驱避剂提供理论依据。
By studying the binding affinity, some special binding odorants can be selected. This may provide the theoretical basis for developing attractants and repellents of the cotton bollworm.
通过研究该蛋白与小分子的结合，筛选出合适的气味，从而为开发棉铃虫引诱剂及驱避剂提供理论依据。
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