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The results showed that elevated CO2 increased the R/S ratio and the dry mass of both coarse and fine roots, indicating that the seedlings under elevated CO2 allocated more biomass to their below- ground part. Compared with control, elevated CO2 increased the contents of reducing sugar, sucrose, and total soluble sugar in coarse roots significantly, but had less effect on those in fine roots. Elevated CO2 increased the contents of starch and total non-structural carbohydrate both in coarse roots and in fine roots. Under elevated CO2, the carbon content in coarse and fine roots had an unsignificant increasing trend, while the nitrogen content decreased signifi- cantly, which resulted in an increase of C/N ratio.

结果表明：CO2浓度升高使红桦幼苗粗根和细根的干质量增加，同时根／冠值显著升高，表明CO2浓度升高使红桦幼苗生物量向根系的分配增加；与对照相比，粗根的还原糖、蔗糖和总可溶性糖含量显著增加，而在细根中没有显著变化；粗根、细根的淀粉和总的非结构性碳水化合物含量显著增加；CO2浓度升高下粗根和细根的碳含量有升高的趋势但未达到显著水平，同时氮含量降低，碳／氮值升高；氮的吸收量在粗根和细根中均无显著变化。

Based on 9-month monitoring field data,this paper analyzes the variation of chlorophyll-a, total phosphorus,total nitrogen and transparency in different sub-lake districts in order to study the treatment effect of eutrophication restoration project in Lichee Lake in Shenzhen.

分析和比较了深圳荔枝湖综合治理工程运行9个月内不同湖区水体的叶绿素a、总磷、总氮及透明度的变化，探讨了综合治理工程对城市富营养化湖泊荔枝湖的水质改善情况。

The second part of detailed analysis make current our country employment situation very rigorous 12 reasons:1 the population cardinal number is big, mooching add the total deal in labor force.2 the social milieu of employments do not loosen.3 the third industry develops the insufficiency.4 small business enterprise in big inside in space in employment developments are difficult.5 expand the not regular taking up employment strongly is tired with the flexibility means of taking up employment the form.6 right nesses of devotion shortage that promote takes up employment the funds.7 right nesses of men out of occupations take up employment again the training dint degree of the ability is not enough.8 labor force markets are not perfect.9 legalize, systemize the employment service system that turn to become with profession not yet. 10 societies guarantees the system is not sound. 11 total character in labor forces constructions are not reasonable. 12 after educating the system the reformation, the talented person educates the construction do not do the reasonable.

第二部分详细分析了造成当前我国就业形势十分严峻的十二项原因：1 人口基数大，新增劳动力总量多。2 就业的社会环境不宽松。3 第三产业发展不充分。4 就业空间大的中小企业发展艰难。5 大力推广非正规就业和弹性就业形式的手段乏力。6 对促进就业资金的投入不足。7 对失业者再就业能力的培训力度不够。8 劳动力市场不完善。9 法制化、制度化和专业化的就业服务体系尚未形成。10 社会保障体系不健全。11 劳动力总体素质结构不合理。12 教育体制改革滞后，人才培养结构不尽合理。

In 1 irrigation time and 2 irrigation times treatments, soil salt content decreased by 11.7%, and soil salt content increased by 12.6% in 3-4 irrigation times treatments. 2 After irrigation, the mean reduction of soil bulk density was 6.5%, and the mean increment of soil total porosity was 18.1%. With the irrigation frequency increasing, soil density was decreased and soil total porosity was increased. 3 Soil infiltration course of reed field irrigated by wastewater fitted Horton infiltration model well. After wastewater irrigation, the first infiltration rate decreased, but the stable infiltration rate promoted with the wastewater irrigation frequency increasing. 4 Soil water-holding capacity was increased by wastewater irrigation. The maximum water-holding capacity in capillary was 90.15 mm in the treatment of irrigation 3 irrigations, and the maximum water-holding capacity in non-capillary was 4.15 mm in treatment of 4 irrigations.

废水灌溉后，土壤pH均值降低6.0%；废水灌溉1～2次，土壤含盐率降低11.7%，废水灌溉3～4次后，增壤含盐率增加12.6%。2）废水灌溉后土壤体积质量均值减小6.5%，总孔隙度均值增大18.1%；随着废水灌溉次数的增多，土壤体积质量和总孔隙度分别有减小和增大的趋势。3）Horton模型比较适合描述废水灌溉后芦苇群落的土壤入渗过程，废水灌溉降低了初渗率，但随着废水灌溉次数的增多，稳渗率增加明显。4）废水灌溉增强了土壤贮蓄水分的能力，废水灌溉3次吸持贮水量达到最高（90.15 mm），灌水4次滞留贮水量达到最高（4.51 mm）。

Formerly Anyang Forging Equipment Factory was established in 1956, is the country's fixed-point production forging hammer manufacturers, science and technology enterprises in Henan Province, Henan Province Association forging units and executive director of the China Association for forging unit Enterprise covers an area of 83 mu, with total assets of 100,000,006 yuan Bai°°, the company has a small and medium-sized pieces of machining, large machining, riveting forging, into equipment, machine repair plant and a total of five in the former Ministry of Machinery three types of planning within the Institute of forging hammer, air hammer country standards drafted by the Anyang Forging companies, enterprises, through the ISO9001 certification, air hammer, riveting machine two products were the only company in Henan Province mechanical products designed to protect the country issued BrandName the "register marks of origin", enterprise products have series of air hammer, electric-hydraulic hammer machine, electric-hydraulic hammer head, CNC Fully Hydraulic Die Forging Hammer, forging manipulator, closed single-point presses, many automatic forging press workers, metal shavings Press, metal balers, precision bar cutting machine, large forging presses, shearing machine, bending machine, such as 13 series, 56 specifications of products, which air hammer, riveting machines have won the "ú" and "provincial excellent" designation, the product best-selling domestic and exported to the United States, Britain, Germany, India, Pakistan, Vietnam, North Korea, the world's more than 50 countries and regions.

安阳锻压机械工业有限公司成立于1956年，是国家生产锻锤的定点生产厂家，河南省科技型企业、河南省锻造协会副会长单位和中国锻协常务理事单位，企业占地面积八十三亩，资产总额一亿零六佰捌拾万元，公司设有中小件机加工、大件加工、铆锻、成装、机修共五个分厂和一个在原机械部规划内的三类锻锤研究所，国家空气锤标准由安阳锻压公司起草，企业通过了ISO9001认证，空气锤、铆接机两种产品获河南省机械产品唯一一家国家颁发的旨在保护名优产品的&原产地标记注册&，企业生产的产品有系列空气锤、电液锤整机、电液锤动力头、数控全液压模锻锤、锻造操作机、闭式单点压力机、多工位自动锻造压力机、金属屑压块机、金属打包机、棒料精密剪断机、大型热锻压力机、剪板机、折弯机等十三个系列，五十六个规格产品，其中空气锤、铆接机曾分获&国优&和&省优&称号，产品畅销国内，远销美国、英国、德国、印度、巴基斯坦、越南、朝鲜等世界五十多个国家和地区。

Ammonia volatilization in relation to N application rate and climate factors was studies through field experiment in red soil under the crop rotation of Smooth Crabgrass in spring and Winter Radish in autumn Results indicate that ammonia volatilization in Treatments N90, N160 and N230 in spring dragged on for 10~17 days, and peaked at the 6th~8th day after urea application, reaching N0.11, 0.57 and 1.84kg hm^(-2)d^(-1), respectively, and the total amount of N loss through ammonia volatilization was N0.67~5.16kg hm^(-2) accounting for 0.74%~2.24% of the total N applied.

通过红壤旱地种植牧草马唐和蔬菜冬萝卜轮作试验，研究了在春秋二季红壤旱地氨挥发对不同施氮量和气象因子的响应。结果表明，红壤旱地春季牧草实验，氮肥处理N90、M60和N230，氨挥发持续10~17d，在施肥后6~8d达到峰值，峰值分别为N0.11、0.57和l.84kg hm^(-2)d^(-1)。

The main researching contents included as following:relationships betweenspecies diversity,community richness,vegetation succession,soil volume weight,solu-ble Na+concentration and five soil chemical elements(N、P、K、Ca、Mg)concentrationwith grazing intensities in the grassland.Relationships between concentrations,re-serve pools of plant nutrient materials,including five macroelements(N、P、K、Ca、Mg),crude protein,crude fibre,crude fat and total nonstructural carbohydrate,and their allocations in defferent plant parts with grazing intensities in thegrassland.Effects of grazing on Leymus chinensis population were also examined andthat more attentions were paid on the responses of many biological characteristics ofabove-and below-ground plant modules to different grazing intensities.Furthermore,in the respects of plant production,survival rate,tillering ability,total nonstructuralcarbohydrates content and others,the effects of one years different defoliationpatterns on the vitality of Leymus chinensis population were detected.

主要研究内容有：放牧对羊草草地植被和土壤的影响，致力于物种多样性、群落丰富度、植被演替和植物生产量、以及土壤容重、土壤水溶性Na+含量和五种土壤大量营养元素(N、P、K、Ca、Mg)的含量等土壤理化性状与放牧强度关系的分析，分析了不同放牧强度与羊草草地草群和羊草种群地上和地下各植物部分中多种营养物质的浓度、贮量及其分配的关系；放牧对羊草种群的影响，注重了羊草种群的地上与地下各植物器官对不同放牧强度的反应和适应性变化，最后，从植物生产量、存活率、分蘖能力以及总非结构性碳水化合物含量等方面，探讨了不同人为去叶方式组合对羊草种群当年和次年生活力的效应。

Specializes in producing all kinds of saw blade milling cutter, milling cutter incision, the overall carbide cutter, cutter blade on three sides, high-speed steel lathe tool, the taper shank end mill, inlay tooth circular saw blades, all kinds of hob, machine blade, reamer drill bit, rubber blade, band saw blade and the kinds of non-standard custom-made knives, cutting tools; in the design and manufacture has accumulated a wealth of experience, enterprise successfully passed the IS09001 total quality management system certification, the company the implementation of total quality management, and strict selection of high-quality materials production, strong technical force, complete detection means, processing equipment, in the tool manufacturer in the first commitment to the promotion of quality services.

晋南工具有限公司专业生产各种锯片铣刀，切口铣刀、整体硬质合金铣刀、三面刃铣刀、高速钢车刀条、锥柄立铣刀、镶齿圆锯片、各种滚刀、机用锯条、铰刀钻头、橡胶刀片、带锯条及定做各种非标刀具、刃具；在设计制造方面积累了丰富的经验，企业顺利地通过了IS09001全面质量管理体系认证，公司实行全面质量管理，严格选用优质材料生产，技术力量雄厚，检测手段齐全，加工设备精良，在工具生产厂家中第一家推广质量承诺服务。

The paper introduces the latest development and application in the production of engineering survey technology. GPS allocation technology and the combination of GPS and total station have been widely used in plane surveying of control survey. Electron distance trigonometric leveling can replace third and fourth-order spirit leveling in vertical survey. Data collection, processing and drawing by total station has achieved automation and integration in topographic survey, etc.

随着工程测量技术的发展，控制测量中平面测量已广泛地采用了GPS定位技术、GPS与全站仪相结合的技术，高程测量中电子测距三角高程能代替三、四等几何水准测量；地形图测绘中，实现了全站仪从野外数据采集、处理到绘图过程的自动化和一体化；摄影测量和高分辨率遥感技术在大比例尺地形测图中的应用等。

Chapter 2 analyzes the traditional self-farming and farming-employed farming methods of the two main features; Chapter 3 is that about when the employer has been artificially cultivated after the elimination, only the self-farming; Chapter 4 is the traditional family smallholder farming production period on the way; Chapter 5 is a special historical period, the period of economic collectivization, In this paper, the period of collective farming as a total cultivated; Chapter 6 is still in accordance with the time and context with it. When the collective total cultivated end, after the family returned to farming, only this time, in family farming with the traditional small family farming periods vary. Chapter 7 is about modern machinery which widely practiced in another way when a new concept of farming and farming methods.

第二章主要分析的是传统社会自耕和雇耕两种耕作方式的主要特点；第三章介绍的是当雇耕被人为的消灭之后，只剩下自耕时的情况；第四章则是到了传统的家庭小农生产时期的耕作方式的介绍；第五章是一个特殊的历史时期，即集体化的经济时期，本文将这个时期的耕作方式称之为集体共耕；第六章仍旧是依照时间脉络顺之而下，当集体共耕结束后，重又回归到家庭耕作的方式，只是这时候的家庭耕作又与传统的小农家庭耕作时期有所不同；到第七章则是现代化机器广泛实行时的又一种全新的耕作理念和耕作方式。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。