aphid

Identification of aphid-borne cowpea mosaic virus and observation on the resistence of several cowpea cultivars to the virus

豇豆花叶病的病原鉴定及豇豆品种抗病性试验

The woolly aphid has a lanate coat resembling cotton.

棉蚜虫有一层羊毛状的表皮,很像一团棉花.

There was a close genetic relationship between the fundatrix ( apterous), virginoparae ( apterous) and virginoparae ( alate) in the green peach aphid.

干母、干雌和迁移蚜之间的遗传关系最近。

Aphid count on plants in fields do not correlate with virus spread in the same fields.

田间植株蚜数与同块田内病毒的扩散程度间无相关性.

During a period of 30 day observation, aphid mycosis developed much more rapidly at the regimes of higher temperature ( 20~ 30 ℃) and humidity(≥ 95% RH), at which, nymphs were effectively infected by contacting the conidia discharged from apterous cadavers.

在历时30d的观察中，以高温（20～30℃）、高湿（95%RH）组合条件下的蚜群发病快且死亡率高，蚜尸上产生的孢子有效地引起若蚜继发性感染。

Electroantennogram and behavioural responses of two varieties of Leis axyridis from three types of habitats to aphid-damaged tea shoot volatiles and aphid kairomones

不同生境异色瓢虫对茶梢互利素和蚜虫利它素EAG和行为反应

One kind of Japanese aphid and one kind of leaf spot fungus.

一种日本蚜虫和一种叶斑真菌.

There is adequate variability in plants to breed for resistance to certain aphid vectors.

植物有充分的变异性可用于培育对一些蚜虫介体的抗性.

A significant linear relationship was found between the trapped aphid number and aphid incidence in current shoots. Thus, prediction confidence intervals of aphids on traps combining with the occurrence peak of apterous aphids in fields were suggested to estimate aphid occurence.

同时田间新梢蚜虫发生率与黄板上蚜虫诱集量有显著的线性关系，可以利用黄板上蚜虫诱集量平均值的预测区间结合田间无翅蚜发生高峰来预测田间蚜虫的发生情况。

Several other herbicides, including amitrole, barban, dicamba , and MCPA, alter aphid populations on treated hosts plants.

另一些除草剂, 包括杀草强 、 燕麦灵 、 麦草畏和MCPA, 都能够改变处理寄主上的蚜虫群体.

Figure 1 . Symptoms on melon plants infected with cucurbit aphid-borne yellows virus ( CABYV ).

图一、甜瓜受瓜类蚜媒黄化病毒 ( CABYV ) 感染呈现之病徵.

The pesticidal effect on aphid of the anaerobic fermentation liquid is studied by field experiment.

利用蚜虫作为试验对象,通过田间试验的方法,对厌氧发酵液的杀虫效果和杀虫机理进行了研究.

Based on the present production level of wheat, the wheat price and the level of cost for the aphid control in Hebei, the economic threshold for the aphid population would be 600 and 650 at early and middle milking stages respectively.

根据河北省当前小麦产量水平，商品价格及防治现状和费用计算，小麦长管蚜的经济阈值，在灌浆初斯为600头，中期为650头。

Biology identification: The weight of the cotton aphid were weighed, honeydew excretion of the cotton aphid were count. Honeydew excretion frequency of the cotton aphid were got. The different insect resistant cotton.

生物学鉴定：称量棉蚜成蚜的蚜重、计数棉蚜排蜜，得出棉蚜排蜜频率，获得不同抗性的品系。

He used aphid fecundity data to elucidate the theoretical effects of antibiosis on insect population dynamics.

他利用蚜虫繁殖力资料说明了抗生作用对虫口动态的理论效应.

The five small arthropod were still very serious pest, especially aphid, scale and whitefly.

其中,五小害虫的危害仍然非常严重, 尤其是蚜虫 、 蚧壳虫和粉虱.

In general an aphid cannot or hardly identify its host at a distance.

在一定距离以外,蚜虫通常不能或难以识别其寄主植物.

The reproduction rate of teh aphid is influenced by nutrition.

蚜虫的繁殖率受到营养的影响.

Identification of cowpea aphid-borne mosaic virus in Nanjing

南京地区豇豆蚜传花叶病毒的鉴定

This paper studies composition and characters of the aphid fauna of Hengduan Mountains Region.

研究了横断山区蚜虫区系的组成和特点.

The possible causes of the formation of aphid host bio types were reviewed.

综述了蚜虫寄主专化型产生的可能原因.

The aphid is now laying waste to the wheat and barley fields.

蚜虫正在毁掉一片片的小麦和大麦田地。

Chemical composition of two rape strains in relation to population dynamics and alary dimorphism of two aphid species

两种品系油菜植株成分与蚜虫种群消长及成蚜翅型的关系

The effect of watermelon mosaic vims ( WMV-2) to the host of melon, cotton aphid ( Aphid gossypii Glover) was studied by the screening of host, micro-measurement, dissection and cultivation in-house.

通过对棉蚜寄主选择、显微测量、解剖法及室内培养，研究了西瓜花叶病毒2号对棉蚜寄主甜瓜的趋向性、体长、胚胎数量、繁殖力等的影响。

The aphid eat green grass, the false eats soul.

蚜虫吃青草, 虚伪吃灵魂.

CTV and its efficient vector, brown citrus aphid ( Toxoptera citricida Kirkaldy ), are widely distributed in China.

在我国,CTV及其强力传媒褐色橘蚜 ( ToxopteracitricidaKirkaldy ) 广泛分布.

Since aphid population may become resistant to organophosphorus compounds, avoid excessive spraying.

因为蚜虫类对有机磷化物能产生抗性, 所以要避免过多的喷洒.

This kind of aphid height 2 millimeters, take the Japanese giant knotweed as the food.

这种蚜虫身长2毫米, 以日本虎杖为食.

In which Aphid and leaflike are the dominant insects in spring.

其中蚜虫、叶螨是春季昆虫群落的优势种.

Studies on Yield Loss and Dynamic Economic Threshold of Cowpea Aphid Aphis craccivora Koch on Cowpea, Vigna sp .

豆蚜危害豇豆损失率及动态经济阈值研究。