捕食性

It also has certain effect against the the younger acarid, but does not have the influence to the nature acarid of preying on and the profit insects.

该药对榆全爪螨有特效，持效期长，对幼龄期有一定的防效，对捕食性螨和益虫无影响。

The functional groups of insects in percentage were phytophagous 41.5%, decomposer 34.1%, and predaceous 9.3%.

湾瓦湿地生态系之昆虫生态功能群组成，植食性功能群占41.5%，分解者功能群占34.1%，捕食性功能群占9.3%。

It shows that the termination of belowground photosynthate-C allocation achieved by tree girdling can affect soil nematodes.

环割对各土层中的食细菌线虫、植食性线虫和杂食与捕食性线虫密度无显著影响，这说明不同营养类群对环割的响应存在差异。

With seasonal change, the proportion of herbivorous and predatory insect group decreased obviously, while that of parasitical insect group increased on average by 147%.

随季节变化植食性昆虫类群和捕食性昆虫所占比重有比较明显的下降趋势，而寄生性昆虫类群所占比重则显著上升，平均上升达147％。

The amount of predacity natural enemy increased than that in non-pest-resistance cotton field.

在害虫天敌中，捕食性类群相对多度前几位的是瓢虫类、草蛉类、蜘蛛类等，捕食性天敌数量比非抗虫棉田有所增大，寄生性类群与非抗虫棉田相比，除蚜虫寄生蜂相对多度较大外，其它种类的相对多度较小。

The effect of the natural enemies were assessed according to the analysis, which revealed that the parasitoids played more significant role than the predators, and that Citrostichus phyllocnistoides which had the closest synchrony and sympatry with citrus leafminer P.citrella, should be considered as dominant natural enemy, and be protected and utilized to control the citrus leafminer. Wide niche and distribution as Orius sauteri has, its narrow overlap showed the less close sympatry and synchrony as well as impossibility to control the prey.

寄生性天敌群子强于捕食性天敌群子，表明在自然环境中寄生性天敌群子对桔潜蛾的控制作用强；捕食性天敌小花蝽Orius sauteri虽然食谱生态位宽，但生态位重叠却小，说明这种天敌尽管分布广泛，可在时间和空间上没能有效"跟随"害虫的发生，对害虫控制作用不大；寄生性天敌短腹桔啮小蜂Citrostichus phyllocnistoides与桔潜蛾在时间上的同步性和空间上的同域性均优于其它天敌，为优势天敌，应加以保护和利用。

The major dominant species of predatory enemies were Erigonidium graminicola and Theridion octomaculatum and their individuals were 81.4 percent of the total predatory enemy individuals of the community.1.2 Spatial patterns and their dynamics of major dominant predatory enemies ofarthropod communityThe research results showed that Pieris rapae distributed mainly on heart leaves and back of inner leaves of cabbage plants, Plutella xylostella distributed mainly on the back of cabbage leaves and Lipaphis erysimi distributed widely in cabbage plants. Among the major dominant species of predatory enemies, Sitticus sinensis distributed mainly on the front of leaves of cabbage plants in spring cabbage fields, and Misumenopos tricuspidata and Propylaea japonica distributed widely in cabbage plants.

在捕食性天敌中蜘蛛10种，捕食性昆虫3种，主要优势种为草间小黑蛛、八斑球腹蛛，其数量占捕食性天敌总数量的81.4%。1.2节肢动物群落主要优势种的空间格局及其动态研究结果表明，害虫优势种菜青虫主要分布于甘蓝心叶和甘蓝叶反面，小菜蛾主要集中分布在甘蓝叶的反面，而菜蚜在甘蓝植株内的分布较广；春甘蓝田捕食性天敌优势种中华跃蛛在外层叶正面分布较集中，三突花蛛与瓢虫类在甘蓝植株内的分布较广。

The evaluated model of dominant predatory enemies to Aphis gossypii was constructed considering the number, temporal and spatial niche, predatory capacity of dominant predatory enemies at the same time, and based on model the control effect of Propylaea japonica was maximum, arriving at 19.82%.

综合分析了捕食性天敌优势种群的数量、与棉蚜发生在时间上同步性和空间上同域性以及捕食量大小，建立了捕食性天敌优势种群对棉蚜控制作用模型，以龟纹瓢虫控制作用指数最大，达19.82%。

This paper analyzed the dynamics of the number and spatial niches of cotton bollworm predators in the fields, and then constructed predators evaluated model considering the number, temporal and spatial niches of natural enemy at the same time.

在分析棉田捕食性天敌数量变化及空间动态的基础上，综合考虑捕食性天敌的数量、天敌与棉铃虫的空间生态位重叠度和时间发生上的同步性，建立了棉铃虫捕食性天敌控制作用的评价模型。

For the most predatory or parasitic, are important pollinators and predators, only a small number of herbivores.

大多数为捕食性或寄生性，是重要的天敌和传粉昆虫，只有少数为植食性。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。