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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.

辞典例句

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.

期刊摘选

The reproduction rate of teh aphid is influenced by nutrition.

蚜虫的繁殖率受到营养的影响.

期刊摘选

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.

辞典例句

The aphid eat green grass, the false eats soul.

蚜虫吃青草, 虚伪吃灵魂.

期刊摘选

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.

期刊摘选

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.

期刊摘选

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.

期刊摘选

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.

辞典例句

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.

期刊摘选

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.

期刊摘选

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.

期刊摘选

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.

辞典例句

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.

辞典例句

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.

期刊摘选

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.

期刊摘选

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.

辞典例句

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。

柯林斯例句