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Soil available N was positively correlated with spore density of Salvia miltiorrhiza and Dioscorea opposite, and hyphal and total percent colonization of Adenophora borealis, while negatively correlated with arbuscular colonization of Aster tataricus; Soil available P exhibited a positive correlation with arbuscular colonization of Salvia miltiorrhiza and vesicular colonization of Dioscorea opposite, while a negative correlation with spore density of Platycodon grandiflorus and vesicular colonization of Atractylodes macrocephala; Spore density of Bupleurum Chinense had a positive affection with soil organic matter; Soil pH was negatively correlated with hyphal and total colonization of Adenophora borealis and spore density of Bupleurum chinense, while positively correlated with spore density of Adenophora borealis.

土壤碱解N与丹参和麻山药的孢子密度、北沙参菌丝定殖率和总定殖率呈显著正相关，与紫苑丛枝定殖率呈显著负相关。土壤速效P与丹参丛枝定殖率、麻山药泡囊定殖率呈显著正相关，与桔梗孢子密度、白术泡囊定殖率呈显著负相关。土壤有机质与北柴胡孢子密度呈显著负相关。土坡pH与北沙参菌丝定殖率和总定殖率、北柴胡孢子密度呈显著负相关，与北沙参孢子密度呈显著正相关。

The safe concentration of Anodonta woodiana woodiana were: the available chlorine of bleaching powder of 95.25~108.86 mg/L, the available chlorine of trichloroisocyanuric acid powder of 3.32~3.55 mg/L.

试验得出漂白粉作用下，背角无齿蚌24h、48h、72h、96h、120h、144h、168h的半致死率；氯杀宁作用下，背角无齿蚌24h、48h、72h、96h的半致死率；漂白粉有效氯安全浓度95.25~108.86mg/L；氯杀宁有效氯安全浓度3.32~3.55mg/L。

It is inportant to understand the limitations of rock mass classification schemes（Palmstrom and Broch,2006）and that their use does notreplace some of the more elaborate design procedures.However,the use of these design procedures requires access to relatively detailed information on in situ stresses,rock mass properties and planned excavation sequence,none of which may be available at an early stage in the project.As this information becomes available,the use of the rock mass classification schemes should be updated and used in conjunction with site specfic analyses.

最重要的是理解的限制(Palmstrom岩体划分方案及Broch，2006年)，他们的使用不部分的取代更多精心设计的程序然而，使用这些设计程序需要获得相对的详细资料，对原位应力、围岩特性和计划挖掘序列中，所有这些都是极有可能在早期的工程这个信息，利用岩体的分类方案应更新，并结合现场应用光学分析。

Results show that Calamagrostis angustfolia wetland is higher than cropland in content of total sulfur and available sulfur, which indicates cultivation depletes soil S, and soil total sulfur and available sulfur show a decreasing trend with each passing year.

结果表明，小叶章湿地土壤总硫和有效硫含量高于开垦后的农田土壤，开垦导致土壤硫含量下降，且随着耕种年限的增加，土壤总硫和有效硫含量呈逐年下降趋势。

The available phosphorous activity was shown as that the available phosphorous activity was higher under conservational tillage methods in the soil surface (0-5cm).

土壤速效磷：保护性耕作措施有助于速效磷在土壤表层(0-5cm)中的积累。

Utilizing 6 and several kinds of diazides prepared in our lab, polys containing 1,2,3-triazolyl and perfluorocyclobutane units were synthesized by "Click chemistry". Utilizing the polycondensation reaction between 6 and several commercially available aromatic diphenol or copolymerization reaction after adding another active aromatic dichloride, fluorinated polys containing phenylphosphine oxide units were synthesized. Utilizing the polycondensation reaction between 6 and several commercially available aromatic dianhydride, fluorinated polys containing PPO units were synthesized.Secondly, structure characterization of fluorinated polys.

利用化合物6同各种自制的二叠氮化合物，通过&Click chemistry&，合成了具有1，2，3-三唑环结构单元的全氟环丁基类聚芳醚；利用化合物22同各种商业化的芳香二元酚类化合物进行缩聚反应或者再加入另外一种活性芳香二氯代物进行三元共聚反应，制备了具有苯基氧膦结构单元的含氟聚芳醚；通过化合物25同各种商业化的芳香二元酸酐类化合物进行缩聚反应，得到了具有PPO结构单元的含氟聚醚酰亚胺。

Adding manure increased the content of soil nutrient. Compared with check, the content of gein, available P, available K and total P increased notably.

生物有机肥的施用能提高土壤细菌、真菌、放线菌等各类微生物的数量，特别是细菌的数量。

Daxing as the case study has been studied in this dissertation, with the help of geostatistics and GIS, on the basis of data of the second general soil quality investigation in 1982 and the corresponding data of indoors soil analyzed, the spatio-temporal law of organic total-N, hydrolyzable nitrogen, available-P and available-K below the surface of soil (0-20cm) within 20 years in Daxing has been studied, as the same time, the change of soil quality has been evaluation applying to the method of soil quality compressive index, the main results are as follows

本文以北京市大兴区为研究样区，以相同样点的1982年第二次土壤普查土壤肥力数据和2000年的新采土样分析数据为基础，运用GIS与地统计学结合的方法，研究了20年来北京市大兴区300多点位的表层土壤的(0-20cm)有机质、全氮、碱解氮、速效磷、速效钾等肥力要素的时空变化规律，应用土壤质量综合指数法定量评价了表层土壤质量的变化，研究主要结论如下

The results indicated that vegetation biomass had a significant positive relationship with vegetation coverage. They had a significant negative correlation with bulk density of soil, and a positive correlation with macroaggregate, water stability macroaggregate, organic matter content, total nitrogen content, hydrolyzable nitrogen content, available kalium content, microbial biomass, and microbial respiration. However, they had no significant relationship with total phosphorus and available phosphorus.

在其恢复过程中，植被地上生物量与植被覆盖度呈正相关，它们与土壤容重呈负相关，而与土壤大团聚体、水稳性大团聚体、有机质含量、全氮含量、水解氮含量、速效钾含量、微生物量以及土壤呼吸强度之间呈正相关，与土壤全磷、速效磷含量无显著相关性。

Abnormity sampling method was adopted and there was 128 sampling points in this field.The statistical laws of soil pH,organic matter,total phosphorus,total nitrogen,alkaline hydrolyzable nitrogen,available potassium and available phosphorus were analyzed, and the results indicated that the variation coefficient of soil nutrients was between 6.3% and 356.1%,pH was 5.3%.Using the geostatistica...

以土壤的pH、有机质、全磷、全氮、碱解氮、速效钾和速效磷含量为研究对象，研究其相应的统计规律，结果表明土壤各养分属性的变异系数在6.3%~35.61%之间，pH为5.3%；采用地统计的半方差函数分析，发现有机质，全氮，碱解氮和速效钾在一定范围内存在空间相关性；采用克立格方法进行最优内插，绘制了养分含量分布图，并对其空间变异进行了初步分析。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。