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To understand the adaptability and ion regulation mechanisms of Medicago sativa, Melilotus officinalis, and Astragalus adsurgens seeds at their germination stage to saline environment, the seeds were treated with different concentrations of NaCl, and their germination rate and recovery germination rate ere determined. In the meantime, the changes of main ions contents in seed embryos and the water uptake by the embryos at 400 mmol L^(-1) of NaCl were investigated.

试验对3种豆科牧草紫花苜蓿、草木樨、沙打旺的种子，在萌发阶段对盐渍环境的适应性和离子调控机制进行了研究，测定了盐渍环境中种子的萌发率和恢复萌发率；同时，对400mmolL^(-1)NaCl处理后，种子恢复萌发、胚的主要离子含量变化、水分吸收等情况进行了测定。

There was a significant correlation between soil easily mineralizable nitrogen and microbial biomass nitrogen measured before planting with the net nitrogen mineralization and plant nitrogen uptake.

通过盆栽试验研究了土壤易矿化有机态氮和土壤微生物态氮与土壤净矿化氮及植物吸氮量之间的关系。

The significant relationship was also found between the difference of easily mineralizable nitrogen before and after planting with soil net nitrogen mineralizable and plant nitrogen uptake.

结果表明，种植前土壤易矿化有机态氮和土壤微生物态氮以及种植前后土壤易矿化有机态氮的变化量均与土壤氮素净矿化量和植物吸氮量之间存在显著的相关性。

The amount of Ca8-P in soil with CRMP treatments was lower than that of CMP treatments. The changes of the amount of Al-P, O-P, Fe-P and Ca10-P in soil were neglectable during the course of experiment.3. The shoot and root weight of sorghum increased through application of phosphorus, in addition, The increase of sorghum shoot and root weight was greater than that of common monoammonium phosphate due to the slow release of nutrients from CRMP. The accumulative uptake of phosphorus in shoot and root with CRMP treatment was greater than that with CMP treatment in low (75 mg P2O5/kg soil ) and high（150mg P2O5/kg soil）rates, especially on middle stage, and in high phosphorus rate, this advantage was more obvious than that in low phosphorus rate.

磷肥的施入，促进了高粱地上部和根部的生长，而控释肥由于缓慢释放养分，与作物吸收相一致，更能促进高粱的地上部和根部干物质积累；对于高粱地上部及根部的磷素累积，在两种施磷水平下控释处理地上部及根部磷素累积量均大于非控释处理，尤其是在中期，而且高磷水平下优势更加明显，低磷控释处理的磷素累积量能达到高磷非控释的累积量，即减少一半的用量即能达到同样的效果；在氮、钾、钙、镁相同的水平下，控释处理比非控释处理更能促进地上部及根部氮、钾、钙、镁累积量，这种优势在中期表现最明显。4。

In the toxicity inhibition test, the accumulated amount of oxygen uptake of BAC was decreased with the increase of Monochloroacetic acid dosages, especially when concentration of MCAA over 100 μg/L. It can be concluded that high concentration of MCAA can inhibit the microorganism's metabolism.

在毒性抑制方面，随著添加加氯消毒副产物一氯醋酸的浓度增加，微生物之累积摄氧有降低趋势，尤其是浓度高於100 μg/L后更为明显，显示MCAA在高浓度下对BAC附著微生物的代谢机制有抑制作用。

Based on above observations, it can be inferred that: a Monosilicic acid is the major silicon-bearing component taken up by roots of rice and bamboo; b Passive uptake of silicon is important for these plants; c Evapo-rate-transpiration may be the major mechanism for the transportation and precipitation of silicon in these plants.

研究得出：1水稻与竹子由外界吸收的含硅化合物主要为正硅酸；2被动吸收是其吸收硅的重要形式；3蒸发作用是硅在这些植物中迁移和沉淀的主要机制。

Arbuscular mycorrhizal symbiosis is the mutualistic association between AM fungi and most terrestrial plants: the plant roots offer carbohydrates to the fungi; in return, the fungi assist the plants with uptake of mineral nutrients, particularly phosphate, from soil, and their subsequent transfer to the root cortical cells.

南京农业大学资源与环境科学学院，南京 210095摘要丛枝菌根(arbuscular mycorrhizal， AM)共生是丛枝菌根真菌与大多数陆地植物的根系之间形成的一种互利共生关系。植物给菌根真菌提供碳水化合物；作为回报，菌根真菌能够增强植物对矿质营养元素的吸收。

The uptake of CNTs by Stylonychia mytilus and their distribution during the dividing process of the cells were observed with optical microscope for the first time. The dose-effect relationship between concentration of CNTs and surviving rate of Stylonychia mytilus was measured.

自从1991年11月日本电气公司基础研究实验室的饭岛钝雄发现碳纳米管以来，其作为一种新型的纳米材料，已成为富勒烯领域的一个主要的研究热点，被广泛应用于物理、化学、材料等各个领域。

According to the above study result, the diversity of microorganisms population in the SUFR system is complex and the bio-community formed in the SUFR system is stable. The close relations between abundance of bacteria and nutrients were found. The correlation between heterotrophic bacteria and COD was 0.949. The correlation between organic phosphate bacteria and TP was 0.815. The correlation between nitrosobacteria and NH3-N was 0.909. The correlation between disnitrifier bacteria and TN was 0.653. These inneglectable great factors effecting on phosphorus-uptake and phosphorus-release of phosphorus accumulating organisms are the influent COD、the concentration of DO、the sludge retention time、the temperature. The diversity of organic phosphate bacteria population in the SUFR reactor was complex and there is no phosphate bacteria taking the absolute superiority in quantity. The near-native pure culture method powerfully complement the traditional pure culture technique and enrich culture technique. The sludgy bioactivity is very good in whole SUFR reactor. By the quality of being biochemistry, the anaerobic phase is higher than anoxic phase and the anoxic phase is higher than aerobic phase of SUFR.

通过以上试验内容研究发现，SUFR 系统中的微型动物种群较多，微生物生态系统稳定；系统中微生物的数量与营养盐的含量密切相关，其中总异养菌与COD的相关系数r 为0.949，有机磷细菌与TP 的相关系数r 为0.815，亚硝化菌与NH4+-N的相关系数r 为0.909，反硝化菌的数量和TN 的相关系数r 为0.653；污水生物除磷工艺中进水COD 的浓度、DO 浓度、泥龄的长短、温度都是影响聚磷菌释磷及吸磷效果的不可忽视的因素；SUFR 系统中的磷细菌呈现种群多样化的趋势，没有占绝对优势数量的磷细菌；微孔滤膜近自然培养法是对传统纯培养技术和富集培养技术的有力补充；整个SUFR 反应器系统中污泥的生物活性很好，就可生化性来讲，厌氧反应器大于缺氧反应器大于好氧反应器；按照动力学方程式求出的细胞生长动力学特征值和SUFR 脱氮除磷系统工艺的实测值结果基本吻合。

Corn seedling were grown for 5 harvests in pot experiments to evaluate potassium supplycapacity of the soils.Results indicated that when soil avaliable potassium decreased,the dryplant matter was firstly affected,secondly was the total uptake of potassium by plant,then was thepotassium content in plant.Exchangeable,nonexchangeable and mineral potassium wereavaliable for plant,but the contribution of each potassium form was depended on soil types.

本文在研究褐土、潮土不同层次土壤的供钾特性、土壤各形态钾素的动力学行为以及小麦根系对钾素的吸收动力学特征的基础上，以玉米幼苗从土壤中的吸钾量为对照，考察了土壤钾素动力学特征与土壤钾素生物有效性的关系，运用热力动力学理论建立了土—根系统中的钾素能态链，并确立了土壤钾素生物有效性的能态指标。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。