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Cyrtorrhinus lividipennis is a vital predator of planthoppers in rice fields, The life table of experimental population of C. lividipennis, rearing on replacement prey Corcyra cephalonica eggs was improved.

采用指形管单头饲养的方法,编制了稻飞虱的重要捕食性天敌黑肩绿盔盲蝽取食替代寄主米蛾卵的实验种群生命表。

The results showed that these factors had some effect on genetic structure of B.

结果表明化学农药、寄主植物对烟粉虱的种群遗传结构具有一定的影响。

And on the basis of Grace medium, different mixes of Fetal Bovine Serum, MM medium, Hydrolysate lactalbumin and Yeast extract was developed on different levels to culture these tissues and cells.

本实验以灰飞虱的四种组织:中后期胚胎、若虫头部组织、成虫的精巢和卵巢为材料进行了培养实验。

EPERNAY, France — For generations of French Champagne makers, the threat of calamity has been a constant companion, whether it is winter freezes or spring frosts, phylloxera parasites or Nazi occupiers.

对代代相传的法国香槟酿造业者而言,灾害的阴影始终挥之不去,包括冬天的冻害、春天的霜害、葡萄虱的虫害,以及纳粹占领者的人害。

Striatellus was determined by orthogonal test. At the same time, the effect of bovine serum albumin on RAPD was studied.

用正交实验对灰飞虱的RAPD的反应体系进行了优化,并对牛血清白蛋白的作用进行了探讨。

Effects of transgenic Bt rice on predation and prey preference of wolf spider Pirata subpiraticus Function responses of spiders fed Bt prey or control prey both followed the Holling type.Ⅱ.

九、转Bt基因水稻对拟水狼蛛捕食功能反应和猎物选择性的影响以不同食料喂饲的两种拟水狼蛛对褐飞虱的捕食功能反应都符合Holling Ⅱ型反应。

The results showed that the functional response of adults of D.punctulatus to second instars of P.sinica was fitted to Holling Ⅱ-type equation and the equation was Na=0.964 9 N/(1+0.313N).

结果表明,食虫齿爪盲蝽对枸杞木虱的捕食功能反应符合HollingⅡ型反应,拟合的圆盘方程为Na=0.964 9N/(1+0.313N)。

The comprehensive measures of was effective for the control of whitefly.

结论]综合防治措施对烟粉虱的抑制效果较好。

Geminiviruses may have favourable or unfavourable effects on the development, survival and reproduction of the whitefly.

双生病毒可对烟粉虱的发育、存活和生殖产生不利或有利的影响。

The results indicated that the effects of all insecticides on control spiraling whitefly was significantly different. Acetamiprid, methomyl and beta-cypermethrin were more effective against the pest.

结果表明,不同药剂对不同虫态的螺旋粉虱的防效存在显著差异,而啶虫脒、灭多威和高效氯氰菊酯对成虫和若虫均有理想防效。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力