虱

These results indicated that a significant mutualism developed between TYLCCNV and the Q biotype whitefly but not so obvious between TYLCCNV and the ZHJ2 biotype whitefly.

这表明，TYLCCNV与Q型烟粉虱之间能够产生显著的互惠关系，而与ZHJ2型烟粉虱之间的互惠关系则不显著。

Minimum time required for acquisition and inoculation of geminiviruses by the whitefly is 15-30 min Geminiviruses may be retained in their vector for one to several weeks, and sometimes for the entire life of the vector.

烟粉虱最短的获毒和接种时间为15~30min；双生病毒在烟粉虱体内可存留1至数周，有的终身存在。

The results are summarized as follows:From 2004 to 2008, field investigation was conducted in 19 locations which differ in terms of frequency of transport activities in Zhejiang, 11652 whitefly individuals collected from 154 plots were analyzed by RAPD PCR and mtCO1 sequencing to determine their genotypes. The results revealed the presence of at least 5 genotypes of B. tabaci in Zhejiang, and each genotype has its own distribution.

主要研究结果如下：2004年至2008年，本研究在浙江省内对按交通发达程度选择的19个有代表性的地点进行了连续5年的田间调查，通过RAPD-PCR和线粒体CO1测序方法对154个样块中11652头烟粉虱进行生物型鉴定，结果显示，浙江省内至少存在5个烟粉虱遗传型，且具有各自特定的分布区域。

The fluctuation of whitefly on poinsettia was studied by investigated the number of whitefly during different stages of growth period of poinsettia. The optimization comprehensive measures were studied by comparing the control effect on whitefly during different stages by different methods.

方法］调查&一品红&不同生育生长期内烟粉虱的数量，研究其消长；比较不同处理在不同时期对烟粉虱的防治效果，研究优化综合防治措施。

The results indicated that: compared with mono-cropping, the mean densities of rice stem borers, leaf roller, rice hoppers and leafhoppers in scale rice-duck farming were decreased by 54.4%, 48.8%, 73.6% and 96.1% respectively, and the rate of diseased plant of sheath blight and rice blast in IF were decreased by 78.9% and 48.5% respectively. Compared with the conventional rice-duck farming, the average densities of rice stem borer, rice leaf roller, rice hoppers and leafhoppers in IF was reduced by 18.2%, 9.5%, 7.0% and 0.82% respectively, and the rate of diseased plant of sheath blight in IF were decreased by 35.5%, unfortunately that of rice blast in IF was increased by 8.0%.

结果表明：规模稻鸭生态种养水稻二化螟、稻纵卷叶螟、稻飞虱和稻叶蝉平均虫量较水稻单一种植分别下降54.4%，48.8%，73.6%和96.1%，纹枯病和稻瘟病病株率分别降低78.9%和48.5%；较常规稻鸭生态种养水稻二化螟、稻纵卷叶螟、稻飞虱和稻叶蝉量分别下降18.2%，9.5%，7.0%和0.82%，纹枯病病株率降低35.5%，稻瘟病病株率升高8.0%。

Based on Iwao's method, the formula of optimum theortical sampling number was established. By using methods for variance analysis, the number of B. tabaci eggs showed little difference on the upper, middle, and lower canopy of L.

应用Iwao的抽样模型，建立了烟粉虱卵的田间理论抽样数公式方差分析表明，烟粉虱卵在女贞树冠上层、中层、下层的分布数量差异不显著。

Based on Iwao's method, the formula of optimum theortical sampling number was established. By using methods for variance analysis, the number of B. tabaci eggs showed little difference on the upper, middle, and lower canopy of L.

应用Iwao的抽样模型，建立了烟粉虱卵的田间理论抽样数公式方差分析表明，烟粉虱卵在女贞树冠上层、中层、下层的分布数童差异不显著。

An arthropod genus of wingless flies including the sheep ked.

包括绵羊虱蝇在内的无翅虱蝇科的一个属。

The sites stand alongside three cordilleras surrounding the Erhai Lake, namely Eastern Wuliang Mountain, Southern Ailao Mountain and Western Cangshan Mountain.

在2003-2004年对云南大理洱海周边小兽体表寄生吸虱进行了调查，诱捕小兽3303只，隶属4目7科、15属、21种，共收集14635只吸虱，共计5科、6属、21种。

The study showed that thecommensalisms of rice-duck-fish and rice-fish can greatly increase D.O.

稻一鸭一鱼在共栖环境下对稻飞虱的控制效果要比稻一鱼区和常规施药区对稻飞虱的控制效果好。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

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。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了