土壤微生物

Microphylla plantations are obvious, such effects and the contents of soil organic matter, N, P and K are gradually increased with the growth of C. microphylla plantations. Moreover, the activities of phosphomonoesterase, saccharase, protease, urease, dehydrogenase, polyphenol oxidase and nitrate reductase and the contents of edaphon C, N and P are significantly increased at soil depth of 0~30 cm, especially at soil depth of 0~10 cm.

随着小叶锦鸡儿固沙群落发育时间的增长，其综合防风性能提高，土壤有机质、N，P，K含量和生物活性逐渐得到改善。0~30 cm土层中磷酸单酯酶、蛋白酶、脲酶、蔗糖酶、硝酸还原酶、多酚氧化酶、脱氢酶的活性和土壤微生物生物量C，N和P含量均大幅度提高，其中0~10 cm土层增幅最大。

The total microbial numbers in fixed sand were 2.8 and 12.5 times as many as those in semi-fixed sand and in sand-flowing dune,respectively.

土壤微生物，在风沙土的发生、土壤肥力的形成和发展、营养元素的转化中起着不可替代的作用[1]。

This paper was aimed to discuss the effects of intercropping aromatic plants on the microbial quantity and nutrients in sand soil in pear orchard.

探讨间作芳香植物对梨园土壤微生物数量和土壤养分的影响。

Primary results on effects of Bacillus licheniformis formulation to soil microorganism community under the different soil conditions showed that Bacillus licheniformis formulation had higher colonization effect in sierozem than in irrigation-silted soil. The formulation could inhabit Fusarium oxysporum Schl.

研究了地衣芽孢杆菌(Bacillus， licheni formis)制剂在不同土壤类型中对土壤微生物群落的影响，结果表明，该制剂在灰钙土中定殖效果明显高于灌淤土；在灰钙土中能有效抑制病原尖抱镰刀菌Fusarium， ox-ysporum schl。

Microbial populations and heavy metal tolerant bacteria in soils around a copper-zinc smeltery were investigated.

对某铜锌冶炼厂周边土壤微生物区系和土壤抗性细菌数进行了实验分析。

Moreover, sulfamethazine was observed hardly degrading in coil, with a half life of 223.9d and 102.4d in sterilized and unsterilized soil respectively.

表明磺胺二甲嘧啶是一种在土壤中不易被降解、容易迁移和渗漏到水体、对土壤微生物和水体产生危害的新型污染源。

Kierkegaard J A%Sarwar M%Wong P T W Field studies on the biofumigation of take-all by Brassica break crope 10.1071/AR99106 Australian Journal of Agricultural Research , 2000,4

朱海平%姚槐应%张勇勇%吴愉萍不同培肥管理措施对土壤微生物生态特征的影响土壤通报， 2003，2

The results show that the decomposition rates of Heptacodium miconioides deblades in different net bags all assume unimodal curve change.

研究了亚热带地区濒危植物七子花落叶在不同网袋中的分解速率及其与土壤微生物和土壤环境因子的关系。

Zeolite can more develop soil microbial biomass, population and metabolic ability of soil bacteria than those of vermiculite.

施用沸石和蛭石在一定程度上都提高了土壤微生物生物量、真菌、细菌和放线菌的数量和代谢能力，其中沸石处理土壤显著地高于蛭石处理的相应值。

Arbuscular mycorrhizal fungi are important soil microorganisms in agroecosystems. Biodiversity among AM fungi in crop fields is influenced by many factors, including soil properties and plant species.

AM真菌是农业生态系中一类重要的土壤微生物，它在农田土壤中的发生和分布受多种环境因素的影响。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐