捕食性

Bt cotton and corn may affect natural enemies indirectly by decreasing the population of lepidopteran insects that serve as hosts of parasitoids or predators. Population densities of predators in Bt fields were significantly higher than those in non-Bt fields treated with insecticides for control of target pests.

杀虫剂用量的减少，降低了对天敌的杀伤力，Bt田中捕食性天敌的种类和数量均显著高于常规施药田；但Bt田内靶标害虫数量的减少和质量的降低，在一定程度上影响了寄生性天敌的种类和数量。

There were 3～4 dominant species of natural enemies in on...

捕食性天敌的种类和危害有很大区别。

The results showed that there were 18 species of natural enemies in the communities.

影响群落相似性的主要因子为产区、地理位置、捕食性瓢虫的种类和数量。

The Raphidioptera and Neuroptera are one of the most archaic groups of endopterygote Neoptera.

蛇蛉目和脉翅目是一类原始的内生翅昆虫，它们绝大部分均是捕食性种类。

He's automatically branded as an oppressor and sexual predator.

他是自动的品牌作为一个压迫者和捕食性。

The dominant natural enemies were Propylosa japonica and predaceous bugs in the second generation, P.

二代主要为龟纹瓢虫、捕食性蝽；三代主要为龟纹瓢虫、异须盲蝽；四代主要为异须盲蝽、蜘蛛、龟纹瓢虫。

The Manchurian tiger is a big type predacity animal, with long body and heavy weight, which is the biggest one compared with other kinds of tigers and has the most beautiful feather color, so that we can call it the king of the animals.

东北虎是大型捕食性猛兽，身长体重，强悍凶猛，与其它虎种相较，个体最大，体色最美，堪称百兽之王。

The present investigations show that Bt rice possesses high efficiencies for controling rice stem borer, yellow stem borer and rice leaf roller, and there are no significant differences in growth and development of non-target organisms, such as rice planthoppers, leafhoppers and predators, and the stability of arthropod community structure between Bt rice and conventional rice paddy habitats.

现有的研究表明，Bt水稻对二化螟、三化螟和稻纵卷叶螟等主要靶标害虫具有较高的抗性水平，对稻飞虱、叶蝉、捕食性天敌等非靶标生物的生长发育和稻田节肢动物群落的稳定性无明显影响。

Studies on Utilizing Parasitoid Chouioia cunea Yang (Hymenoptera: Eulophidae) for Sustainable Control of Fall Webworm;2. In recent years, fall webworm that belongs to international Quarantine Pest appears widely in China, it did great harm to forest trees and brought the inconvenience for people s lifes.

通过对美国白蛾各个发育期的天敌进行调查与研究，发现除了捕食性天敌七星瓢虫、大刀螳螂等外，幼虫期有2种寄生性天敌、蛹期有12种寄生性天敌，这为保护和利用天敌、有效控制美国白蛾提供了依据。

There is not significant effect on pests\' vertical distribution of different cultivation methods,and the plant species on the distribution is similar.1.3 The studying of the natural enemies sub community structure The kinds of sub communities of natural enemies are 6 orders.15 families.22 species,which predatory insects 4 orders.7 families.10 species,araneae 9 families. 11 specie,and a parasitic insect species.

不同的栽培方式对害虫的垂直分布影响不明显，各物种在植株上分布比例相似。1.3天敌亚群落结构研究天敌亚群落共有天敌6目、15科、22种，其中捕食性昆虫4目、7科、10种，蜘蛛目9科、11种，寄生性昆虫1种。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。