土壤生物

The laboratory dose-response study showed that DMDS the LC50 of Meloidogyne spp., Fusarium spp., Digitaria sanguinalisScop, Abutilon theophrasti Medicus were 5.3535, 3.7517, 10.1147 and 17.1740 mg/kg, respectively.

室内生物测定结果显示DMDS对土壤中的线虫和镰刀菌的LC50值分别为5.3535、3.751 7 mg/kg；对马唐和苘麻的LC50值分别为10.114 7、17.174 0 mg/kg。

The accumulative quantity of arsenic in earthworms were relative to the content of arsenic in soil.

说明蚯蚓是土壤中洛克沙胂污染的较好的指示生物。

In the course of bioremediation, bacteria, fungi, actinomyces, and total microbe of soil increased gradually.

在生物修复过程中，土壤中细菌、真菌、放线菌的数量及微生物总量逐渐增加。

In China, crop strews and energy crops are the main resource of bioenergy under the condition of secure food safe. There are lots of resource of crop strew, and only the main tree food crop can produce about 0.5 billion ton strew, which can maintain soil carbon and was used as the resource of bioenergy. In addition, there are about 0.1 billion hm2 waste hills and and that is suitable for farming or forestry can be used for the development of agriculture and forestry energy.

在保证粮食安全的前提下，农作物秸秆和能源作物则是生物质能的重要原料，我国农作物秸秆资源丰富，仅三大粮食作物每年就可以产生5×10~8t左右的秸秆，除了部分还田以保持土壤碳含量外，尚有可用于生物能源的部分，此外我国尚有近1×10~8 hm~2宜农、宜林荒山荒地，可用于发展能源农业和能源林业，而且我国能源农林业物种资源非常丰富，农业主要有木薯、甘蔗、甜高粱、油菜、花生、向日葵等，林业有漆树科的黄连木，无患子科的文冠果，大戟科的小桐子，山茱萸科的光皮树等，以此为原料可以进一步加强我国的生物液体燃料等的生物质能利用方式。

Experiments of bioremediation and control were conducted with the alkali meadow grass planted in saline soil for 3 years. Contrasted with control group, topsoil desalination rate was up to 77.00%; pH value decreased 0.25 pH unit; soil bulk density decreased 0.14 g/m^3; total porosity increased by 5.29%; soil aggregate structure increased by 23.14%; soil water content increased 70.30 g/kg; average triennial alkali grass yield was 36000 kg/hm^2. In addition, planting forage in saline soil as a medium and establishing a compound agro-forestry-animal system promoted the sound combination of planting industry, forestry, and livestock husbandry. Because of the reasons, utilization ratio of land reached more than 184.00%; the income of land increased from 16300 to 35500 yuan/hm^2 average income per farmer in the controlling region increased by 66.00%, from 2160.70 to 1300.80 yuan.

生物修复与调控试验研究表明，草甸盐土经种植碱茅草3a，耕层土壤与对照相比脱盐率达77.00%，pH值下降了0.25个单位，容重降低0.14g/立方公尺，总孔隙度增加5.29%，团粒结构增加了23.14%，自然含水量增加70.30g/kg.3年生碱茅草平均产草量36000 kg/hm^2；盐化耕地采用以种植牧草为中介，将种植业与农区林业、畜牧业有机结合成互相依存，互相促进的农林牧复合生物系统治理后，土地利用率可达184.00%以上，可获得16300~35500元／hm^2的经济收入，治理区农户人均纯收入由1300.80元增加到2160.70元，增加了66.00%。

We took administrative districts at the county level as valuation units, estimated the current economic values of 7 ecosystem services (gas diversification, organism production output, and climate control conservation of water supply, soil formation and conservation, and environment purification, maintenance of organism culture and enter) for 6 biomes (forest, grassland, desert, farmland, wetland, and city).

以县级行政区为评价单元，核算了森林、草地、荒漠、农田、湿地和城市6大类和气体调节、水源涵养、土壤保持、环境净化、生物多样性维护、生物产品产出、文化娱乐7个方面的生态服务价值。

Due to use of harmful pesticides, insecticides, rich soil nutrients for agriculture, annual mass bathing and daily washing activities, the usual practice of dumping of solid waste, many of which may be non-biodegradable and toxic, effluents either from domestic sources including hotels, resorts and ashrams or industrial sources, continuous removal of the sand and stones from river beds, destructive fishing methods, construction work going on in river such as dams and channelization, deforestation, chemicals and many other reasons , the list of which is long have impede the natural physical, chemical and biological quality of river Ganga.

由于使用有害农药，杀虫剂，肥沃的土壤养分用于农业，每年大规模洗澡和日常清洗活动，按照惯例倾倒固体废物，其中许多可非生物降解和有毒，废水是由国内来源包括酒店，度假村和ashrams或工业源，继续去除沙子和石头河床，破坏性的捕鱼方法，建设工作发生在河流如水坝和通道，砍伐森林，化学品和许多其他原因，名单这是长期以来一直阻碍自然物质，化学和生物质量河流恒河。

This project may domestic establish the Shen Nong fragrant chrysanthemum in the forest region to plant the base, uses naturally organic breeds the fertilizer employment, the fertilizer biology fermentation well-rotted compost, the microorganism soil amelioration, the green manure to turn the pressure spoiled to raise the field, the plant disease biology integrated control, the non-pollution irrigation, to increase reduces fragrant harms technological means and so on roasting, large-scale, the wide range carries on to the Shen Nong fragrant chrysanthemum without the environmental damage, the non-pollution cultivation.

该项目可在林区境内建立神农香菊种植基地，采用天然有机腐殖肥料施用、肥料生物发酵腐熟、微生物土壤改良、绿肥翻压养田、病虫害生物综合防治、无污染灌溉、增香减害烘烤等技术手段，大规模、大范围对神农香菊进行无公害、无污染培育。

The objective of this study was to compare and differentiate the different removal mechanisms of the dissolved organic matter in the secondary effluent during the granular activated carbon adsorption, horizontal subsurface flow wetland treatment, sand column treatment, laboratory-scale soil aquifer treatment and GAC+SAT.

通过模拟活性炭吸附、砂柱处理、土壤含水层处理、GAC+SAT及潜流式人工湿地处理实验，研究了城市污水处理厂二级出水中溶解性有机物在吸附、生物降解及生物与吸附的共同作用等具有不同DOC去除特点的处理过程中的去除及转化机制。

Aims Soil respiration may have distinct dynamic patterns at different temporal scales since it is affected by diverse abiotic and biotic factors.

由于受到多种生物和非生物因素的影响，土壤呼吸在不同时间尺度上的动态变化可能不一致。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。