查询词典 bollworm

And the role of predator guilds or dominant predators were different in different cotton bollworm generations.

天敌对棉铃虫的控制作用存在时间上的序列性和阶段性，不同棉铃虫发生世代天敌功能团和优势天敌作用大小不同。

The study aimed to explore the toxicity of Bacillus thuringiensis LY30 to cotton bollworm.

［目的］研究苏云金芽孢杆菌LY30菌株对棉铃虫的毒性作用。

The role of bioassay method in study of relationship between insect and plant volatile as well as the biological significance of attraction of Pterocarya stenoptera to cotton bollworm were discussed.

讨论了生测方法在研究昆虫与植物气味关系中的作用以及萎蔫的枫杨叶气味引诱棉铃虫的生物学意义。

The face of rampant bollworm damage, Guo Sandui and his commitment to lead a group of insect-resistant cotton enormous pressure and challenges

面对猖獗的棉铃虫害，郭三堆和他带领的抗虫棉课题组承担着巨大的压力与挑战

The results showed that GK-2 and GK-12 strains possessed high resistance to cotton bollworm in the whole growing season .

1997～1998年在河北省廊坊市和1998年在河南省新乡市分别研究了转CryIA Bt抗虫基因棉花GK-2、GK-5和GK-12对棉铃虫的抗性水平。

It is an important biological agent to control cotton bollworm in the cotton field by parasitizing rate at 22.9%.

其寄主范围非常广泛，该蜂对棉铃虫各世代的平均寄生率可达22.9 %，是棉铃虫田间生物控制的重要因子。

The cotton bollworm, Helicoverpa armigera, is one of the most destructive pests of cotton and threats the economic production of cotton seriously.

棉铃虫Helicoverpa armigera是棉花上最主要的害虫之一，其发生与危害严重影响棉花的生产。

Large areas of spring corn would induce the cotton bollworm, whichdecreased the population number of the 2nd generation in cotton fields.

2大面积的春玉米作物诱导棉铃虫，从而降低了第二代棉铃虫在棉田的种群数量。

The primary culture was improved by the addition of nature hemolymph collected from 5th-stage bollworm larvae.

对棉铃虫幼虫神经细胞进行了离体培养，并建立了其体外培养的实用方法。

However, due to have had drug-resistant cotton bollworm, the role of pesticides unlikely, but serious damage to the ecological environment, and harmed the physical and mental health of farmers.

然而，由于棉铃虫产生了抗药性，农药的作用微乎其微，反而严重破坏了生态环境，损害了棉农的身心健康。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。