土壤微生物

The different saline and alkali soil environment have different impacts on the soil microorganism growth characteristics.

文中初步分析了艾比湖湿地不同盐碱地土壤微生物群落分布变化的特征，讨论了土壤盐碱化程度对微生物数量的影响。

There were significant linear relationships between arginine ammonification rate,microbial biomass C,soil ATP content and substrate-induced respiration.

比起其它土壤微生物生物量分析方法，精氨酸氨化法既简单、快速，又不需要昂贵的设备，可作为土壤微生物生物量测定方法。

With toxicity evaluation,except 1 mg·kg-1dichlorvos、phorate and chlornyrifos,they produce middling harm to animalcule of farm soil,the rest different kinds and chroma pestcides bring lower or zero harm to soil animalcule.

通过毒性评价，除1 mg·kg-1敌敌畏、甲拌磷和毒死蜱对大田土壤的微生物为中等危害以外，其余的受试农药及浓度对土壤微生物低毒或无实际危害。

Compared with the control, intercropping Centaurea cyanus and Ocimum basilicum L increased the microbial quantity significantly in different developing periods and at each soil layer, as well as regulated the ratio of the soil fungi, bacteria and actinomyees in soil microbial community.

梨园间作香矢车菊和柠檬罗勒较对照显著提高各个发育时期和各土层中土壤微生物的数量，调节土壤微生物群落中真菌、细菌、放线菌的比例。

The studys object is bitch forest .spruce forest ,fir forest, chrysanthemum alp, willow community and two couch grass, so the research of the soil microorganisma,soil enzymatic activity in the subalpine coniferous forests in western Sichuan is significant to china .

因此，开展对川西地域中独特的生态环境中土壤微生物群落、以及与碳氮循环有关的土壤功能微生物数量和酶活性等的分布特征研究，进一步揭示川西亚高山植物群落的生态学过程已成为一项重要的研究课题。

Through the study on the soil microorganism, soil enzyme activity in spruce forest, chrysanthemum alp and couch grass in the subalpine forests in western Sichuan, the result shows that the relativity of the soil microbial quantity is very prominent in the soil. The relation with the quantity of the soil microorganism is microphyte 〉 actinomycete 〉 fungi.

：通过研究川西亚高山云杉林、绣线菊一茅草群落、高山柳群落和茅草群落等林地的土壤微生物数量和酶活性的变化，结果表明：云杉针叶林群落中的土壤微生物数量最多，绣线菊茅草灌丛群落次之，茅草群落最少。

The terrestrialand aquatic environmental impacts of veterinary drugs was expounded both on terrestrial environmental impacts of veterinary drugs upon plants, soil animals, soil microorganism and protozoa, and ecotoxicity of veterinary drugs to plankton, microorganism, fish and Crustacea.

综述了兽药对陆生和水生生态环境影响方面的研究进展，探讨了兽药对陆生植物、土壤动物、土壤微生物与原生生物等陆生生态环境的影响及对浮游类生物与微生物、鱼虾与水体甲壳动物等水生生态环境的影响及其生态毒理效应。

Chapter three is the degradation of Abamectin in soils. The results show:(1) The decomposition of Abamectin is fastest in Aquic Cambosols while slowest in Udic Cambosols in five kinds of different soils.(2) Organic matter content in soil is the most important factor which influences the degradation half-life of Abamectin in soil, and their relative coefficient arrives at 0.9323, but pH value, total nitrogen, CEC and field maximum moisture capacity correlate little.(3) Soil organic matter, soil temperature and pesticide concentration can obviously affect Abamectin degradation in soil, in addition, the degradation half-life of Abamectin in sterilized soil is far more than that in non-sterilized soil, which maybe contributes to microorganism in soil. Chapter four is the microbial degradation of Abamectin.

第三章研究了阿维菌素在土壤中的降解，结果表明：(1)五种不同类型土壤中，阿维菌素在潮湿雏形土中降解最快，而在湿润雏形土中降解最慢；(2)土壤有机质含量与阿维菌素半衰期相关性较强，相关系数为0.9323，而土壤酸碱度、总氮含量、阳离子交换量和田间最大持水量等因子与阿维菌素半衰期相关性较小，说明影响阿维菌素在土壤中降解的最主要因子为有机质含量；(3)土壤有机质、土壤温度和农药浓度等因素对阿维菌素在土壤中的降解有较大影响，此外灭菌条件下其降解半衰期远大于未灭菌时的半衰期，这表明阿维菌素在土壤中的降解可能和土壤微生物有关。

The result shows that when HPLC adopts 254 nm as scan wavelength, and the mixture of acetonitrile and water according to appropriate proportion as flowing phase, the parameters such as accuracy, repetition and precision et al for the method are all good to satisfy the essential rules of pesticide residue determination.Chapter three is the degradation of Abamectin in soils. The results show:(1) The decomposition of Abamectin is fastest in Aquic Cambosols while slowest in Udic Cambosols in five kinds of different soils.

第三章研究了阿维菌素在土壤中的降解，结果表明：(1)五种不同类型土壤中，阿维菌素在潮湿雏形土中降解最快，而在湿润雏形土中降解最慢；(2)土壤有机质含量与阿维菌素半衰期相关性较强，相关系数为0.9323，而土壤酸碱度、总氮含量、阳离子交换量和田间最大持水量等因子与阿维菌素半衰期相关性较小，说明影响阿维菌素在土壤中降解的最主要因子为有机质含量：(3)土壤有机质、土壤温度和农药浓度等因素对阿维菌素在土壤中的降解有较大影响，此外灭菌条件下其降解半衰期远大于未灭菌时的半衰期，这表明阿维菌素在土壤中的降解可能和土壤微生物有关。

We measured soil microorganism activities, microorganism diversity and enzyme activities in extremely drouthy region in Tarim with 5 different cultivations,in order to show the influences of agricultural practices on soil ecosystem.

采集有代表性土样对塔里木极端干旱区5种土地不同利用方式土壤微生物活性、土壤微生物多样性和土壤酶活性进行了测试。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。