寄主植物

Our results also discovered that there were two host preference biotypes of the aphid Aphis gossypii and the related behavioral mechanism was discussed in detail.

实验结果还证明了蚜虫在两种不同的寄主植物上形成了特定的取食专化型。

At the same time it is good host for Dactyl opius coccus and good species for landscape .

同时，也是胭脂虫的优良寄主植物以及居室，办公室的净化，街道，公园，单位绿化美化的好树种。

When the larvae were fed with Apricot and apple-pear the death rate of the larvae increased,the larval and pupa stages prolonged, the pupa weight decreased, female adult life shortened and the average fecundity.The age-specific life table of codling moth indicated that the trend index of codling moth population fed on Jonathan apple, Red Delicious apple, Zhangye number two apple, Chinese pear-leaved crab-apple and Crisp pear were more than one. Experiment population quantity was at the growth condition. The trend index of codling moth population fed on Apple-pear and Apricot were less than one.

通过不同寄主植物饲养条件下苹果蠹蛾特定年龄生命表的分析可知，取食沙果、早酥梨、红玉苹果、红元帅苹果和张掖2号苹果的苹果蠹蛾实验种群的种群趋势指数均大于1，实验种群数量处于增长状态，而当苹果蠹蛾取食苹果梨和杏时，其种群趋势指数小于1，下代种群(来源：Ab9b9BC论文网www.abclunwen.com)数量不断减少。

In order to control dayflower application SYAU-06 strain successfully required mycelial suspensions concentration of 1.0×10~6 mL~(-1),7-9 days of culture time,3 leaf stag of host,28-32℃of temperature,over 80%relative humidity and at least 48h dew duration.

利用草茎点霉SYAU-06菌株成功控制鸭跖草危害，菌丝体的接种浓度要高于10~7mf·mL~(-1)，培养时间控制在7-9d，寄主植物鸭跖草处于3叶期前。

Although many look attractive, such as this striped pea gall of the wasp Cynips longiventris they generally reduce the fertility of the host plant quite greatly.

虽然许多看起来十分诱人，如本蜂 Cynips 条纹豌豆胆，他们一般 longiventris 降低生育率的寄主植物相当大。

The results showed that these factors had some effect on genetic structure of B.

结果表明化学农药、寄主植物对烟粉虱的种群遗传结构具有一定的影响。

Possible direct links between geometrid diversity and potential food plants were much weaker.

然而上述大部分的比较缺乏直接关联，透过温度和湿度等环境因子则会同时影响植被与蛾类相，尺蛾科物种多样性和潜在寄主植物间可能的直接连结显得更弱。

All of these had shown that the induced resistance could be transmitted.Oligosaccharides had not shown any direct activity against Puccinia striifomis in vitro. This suggests that Oligosaccharides can elicit resistance to diseases of wheat, and are different from common pesticides.

不同浓度(25ppm、50ppm、100ppm)的5号提取物的体外抑菌试验表明，低聚糖对条锈菌没有明显的抑制作用，说明低聚糖不具有直接杀菌或抑菌作用，使小麦产生抗锈性的原因在于诱发寄主植物的抗病潜能，使植物本身产生对病原菌的抗性，这与普通杀菌剂显然不同。

The contents of tannin in two non-host plants were more than in the host plants, so regard that tannin was the important factor of repressing the feeding of Tetranychus viennensis.

在两种非寄主植物叶片中单宁的相对含量远远高于在寄土植物叶片中的含量(麻栎9.60％，大叶黄杨23.85％)，认为单宁是阻碍山楂叶螨取食的重要因子。

The host plants will be damaged when infected by root-knot nematodes. The response of the host plants parasitized can also produce evident impact to the root-knot nematode, resulting in adaptation of the nematodes specific to different host plants.

此种寄生行为会对植物造成一定的伤害，而寄主植物的反应也会对根结线虫产生显著的影响，从而引发线虫的种种高度专化性适应。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。