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The yellow boards play an important role in prevention and cure white fly in greenhouse because they can trap, stick and kill white fly. The test also shows that almost white fly often appear in the space where 5cm-15cm upper than the top of the plant. According to this result, the optimal hanging height of the yellow board should be at the place where 5cm-15cm upper than the top of the plant. The yellow boards should be set up as much as possible in this space to reach the best preventative effect.

同时使用黄板诱杀这一物理防治方法,也可有效减少温室内白粉数量,并且确定了植物顶端上方5~15cm处是白粉较活跃的区域,因此黄板应尽可能多的覆盖这一区域,以达到最好的防治效果。

The research aimed to study the fluctuation of whitefly on poinsettia and provide references for the control of whitefly.

[目的]研究烟粉在&一品红&上的消长,为烟粉的防治提供参考。

As with all removers, you do need to use them as instructed to avoid tick damage.

尽管所有的扁都驱除干净了,但是你还是需要定期使用,以避免扁带来的危害。

Eustigmata tamaricina is only species of psyllids which could form galls on Tamarix in the north of Xingjiang, China.

幽柽木是新疆北部地区唯一形成虫瘿的木种类。

In order to maintain a lice free environment any child with any nits or lice will be sent home.

为了维持无的学习环境,任何有子或卵的学童必须离校回家。

The population of white-backed planthopper nymphs showed a clumped distribution mainly after immigrating into rice fields and south-north was the main direction for WBPH nymphs to aggregate and diffuse.

白背飞若虫种群的空间分布主要呈聚集分布;在研究尺度下,南北方向是白背飞若虫种群聚集和扩散的主要方向。

The seasonal pattern of parasitism of the white-backed planthopper, Sogatella furcifera, was investigated in a subtropical double cropping of rice ecosystem in hilly region Jinghua-Quzhou Basin, Zhejiang, China.

在亚热带浙江金衢盆地的丘陵双季水稻田的早、晚稻期间研究了白背飞的被寄生和被捕食作用下的存活率。早、晚稻白背飞卵被缨小蜂寄生率分别为 1 1 %和 1 6 %,被捕食及未知因子死亡率分别为 2 3%和 1 6 %。

To compare the susceptibility of two homogenous genotypes of transgenic indica rice, namely, B1 and B6 expressing a gene of cry1Ab from Bacillus thuringiensis Berliner against the non-target pest, the white-backed planthopper, Sogatella furcifera, with that of their non-transgenic parental cultivar (Jiazao 935), the development duration, oviposition behavior and fecundity of this planthopper on B1 and B6 were measured as compared with those on Jiazao 935 using the methods including a developmental duration measurement, an electronic monitor of the oviposition behavior.

为了比较2个转cry1Ab基因抗虫籼稻品系B1和B6对其非靶标害虫白背飞敏感性与其非转基因亲本对照嘉早935的差异,采用历期测定和产卵行为电子记录等方法分别测定了白背飞于B1和B6及嘉早935上的发育历期、产卵行为及繁殖力。

The results are summarized as follows:(1) Observing and recording copulation events of whiteflies on plants using a video cameraA cost-effective,efficient,and reliable video recording system for observing and recording the mating behaviour of whitefly on live plants was developed.

结果如下:(1)使用摄像机观察和记录烟粉在活体植物上的交配行为研发了一套用于观察和记录烟粉在活体植物上交配行为的摄像系统,经验证该系统可以准确、连续地观察和记录该虫在较自然状态下的求偶和交配行为。

What geminiviruses that can be acquired by whitefly and the possibility for virus transmission are affected by the host plants, the special protein of geminiviruses as well as the GroEL proteins synthesized by endosymbionts of the vector.

寄主植物、双生病毒的一些特殊蛋白以及烟粉内共生菌产生的QroEL蛋白,都可影响烟粉携带的双生病毒种类及传毒的可能性。

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在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。

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