蚜虫

The results showed that extracts from Datura metel seeds had strong antifeeding effect on Agelastica alni orientalis, Apocheima cinerarius and Vanessa indica. They also had high contact toxicity on Myzus persicae and Chaitophorus populeti.

结果表明，白花曼陀罗种子提取液对杨毛臀萤叶甲东方亚种成虫、春尺蠖和荨麻蛱蝶幼虫具有较强的拒食活性，对蚜虫具有较强的触杀活性。

CO〓 and soil water affected aphid population indirectly through the direct effects on the wheat characteristics. The population increase was due to both high adult fecundity and shortened nymphal period.

3在700ppm范围内CO〓对禾谷缢管蚜的直接影响很小，CO〓和土壤水分对禾谷缢管蚜种群的影响主要来源于间接影响，即通过影响小麦的理化性质进而影响蚜虫的个体行为和种群大小。

Matrine had broad-spectrum killing pesticide activity to acaridae, Pieris rapae L.

苦参碱具有广谱杀虫活性，对叶螨、菜青虫、蚜虫均具有活性。

Increased ratio of reducing sugar to soluble nitrogen is associated with genetic resistance of peas to Acyrthosiphom pisum.

还原糖与可溶氮比率的增加同豌豆蚜虫的遗传抗性有关。

The insecticidal activities of the ethanol extracts and 5 kinds of extracts with petroleum ether, chloroform, ethyl acetate, n-butanol, aqueous from Rubia cordifolia L. against wolfberry aphis was investigated.

采用点滴法，测定了茜草乙醇提取物和石油醚、氯仿、乙酸乙酯、正丁醇和水5种不同极性萃取物对枸杞蚜虫的触杀活性。

Barley yellow dwarf virus is reported to be the most important viral pathogen of cereals worldwide. In fact, BYDV is a group of at least five luteoviruses that cause similar symptoms in cereals but can be distinguished serologically and on the basis of vector specificity.

禾谷类作物的黄矮病是由大麦黄矮病毒(Barley yellow dwarf virus，简称BYDV)的侵染所引起的，在世界各国均有发生，由蚜虫进行循环性的永久传播。

This site also offers databases on insect collections at the Illinois Natural History Survey, literature on insect viruses and pathogens, soybean aphids, and the Therevidae.

这是美国伊利诺斯州自然历史调查局生态昆虫学中心的主页，提供有关生物防治、昆虫迁移和分布、城市昆虫生态等下级页面的链接，INHS的昆虫收藏数据库，以及昆虫病毒和病原体、大豆蚜虫等方面的文献。

In addition to the capacity of transmission SCYLV between sugarcane plants efficiently, 100%(9/9), 75%(6/8), and 50%(4/8) respectively while 15 viruliferous aphids were inoculated for each plant.

建立了能够检出单头蚜虫及侵染早期未现症植株体内SCYLV的巢式RT-PCR技术，在超过80%的饲毒2周以上的甘蔗绵蚜无翅成虫体内检测到病毒的存在。

The data obtained from the virus loss experiments showed that the virus retain ability were decreased with long delay duration in the air and viruliferous aphid lost the virus particles by intracellular penetration.

病毒丢失实验结果表明，蚜虫在空气中&滞留&时，持毒能力会不断下降，同时在植物上进行试食穿刺时，病毒主要丢失在植物细胞内。

After aphid＇s feeding, the increase ratio of gramine were negatively related to ratio of aphid number significantly r=-0.884(superscript *.

在蚜虫取食诱导后，山羊草芦竹碱的含量提高率与蚜量比值呈显著的负相关，相关系数分别为-0.884*。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。