查询词典 soil

The purpose is to provide a general comprehension for the relationship between soil physical properties and fractal dimension affected by soil alkalinization ,and to present a new heuristic idea to regional-level ma.

运用土壤颗粒质量分形模型计算松嫩平原低平地安达试区植被分布区和碱斑区样点土壤颗粒的分形维数，并建立分形维数与土壤颗粒不同粒级间的回归关系，以探讨土地碱化后土壤粒径分布的分形特征及其与土壤物理性状的关系。

Soil Light soil composed of alluvium and sand.

土壤轻土壤组成的冲积土和沙子。

The soil is classified to tidal sandy soil, derived from river alluvium with sandy loam texture.

土壤分类为河流冲积土发育的潮汐沙土，砂壤土质地。

Nitrate content of amaranth and spinach was affected by supply nitrogen rate in soil mainly, the second was soil water content.

通过田间试验研究不同水氮管理对苋菜和菠菜的产量、水分利用效率及硝酸盐含量的影响。

The results showed that methamidophos inhibited the growth and activity of bacteria, Actinomyces and Azotobacter at different degree, but stimulated the growth of fungi; the results also showed that soil respiration and ammonification was stimulated, however, soil nitrogen fixation, nitrification and Fe－reduction was inhibited.

结果表明，甲胺磷对细菌、放线菌和固氮菌群的生长具有不同程度的抑制作用，而对真菌却有一定的刺激效应；土壤的呼吸作用、氨化作用增强，自生固氮能力、硝化作用以及铁离子价数转换作用减弱。

The change of remaining litter weight was the largest in the earlier 30 days during 60-day litter decomposition, and there was no significant difference in subsequent 30 days. The phenolic acid content of litter was significantly reduced with the decomposition time prolonging, and the releasing quantity of phenolic acid was the highest at the tenth day. The amounts of soil Aerobic azotobacter, Ammonifier and Aerobic cellulose-decomposer and the soil chemical properties such as pH, phenolic acid content, NH+4-N and available phosphorus were significantly affected by the litter aqueous extract of four decomposition stages.

凋落物分解的60d中，凋落物残留量在前30d内变化最大，30d后无显著变化；凋落物中酚酸含量随分解时间的延长，呈显著降低的趋势，且在分解10d时，酚酸释放量最大。4个分解动态的凋落物浸提液显著地改变了土壤好气性自生固氮菌、氨化细菌、好气性纤维素分解菌的数量和土壤pH值、酚酸含量、铵态氮、有效磷等化学性质。

The phenolic acid content of litter was significantly reduced with the decomposition time prolonging, and the releasing quantity of phenolic acid was the highest at the tenth day. The amounts of soil Aerobic azotobacter, Ammonifier and Aerobic cellulose-decomposer and the soil chemical properties such as pH, phenolic acid content, NH+4-N and available phosphorus were significantly affected by the litter aqueous extract of four decomposition stages.

凋落物分解的60 d中，凋落物残留量在前30 d内变化最大，30 d后无显著变化；凋落物中酚酸含量随分解时间的延长，呈显著降低的趋势，且在分解10 d时，酚酸释放量最大。4个分解动态的凋落物浸提液显著地改变了土壤好气性自生固氮菌、氨化细菌、好气性纤维素分解菌的数量和土壤pH值、酚酸含量、铵态氮、有效磷等化学性质。

The content of mineral-fixed ammonium in soil was related not only to soil clay minerals but also to fertilization.

固定态铵的含量不仅与土壤中的粘土矿物有关，施肥对其也有影响。

The wet environment of soil also got more anaerobic in the long submersed time and promoted the utilization of soluble phosphorus by anaerobe and its transformation to OP, which explained the dramatically augment of OP in both land soil and drainage streams.

同时， 在周期较长的淹灌期间，土壤潮湿的厌氧环境增强，促进了厌氧微生物对溶解态磷的吸收利用，将其转变成有机态磷，因而在灌区土壤和排水中有机磷含量均有极显著的提高。

The effect of azotobacter fertilizer on living activity, soil fertility, yield, total nutrient and crop quantity is studied at the different level of using nitrogen .in the calciform soil by the rape potted plant biology analogue experiment, in order that the best scope of valid applying azotobacter fertilizer is determined. It can offer theoretic basis for searching ways of biology controlling to high yields and qualities, optimization directions for products of special compound fertilizer and valid using.

本文通过油菜盆栽生物模拟试验，研究了在不同施氮水平下，石灰性土壤上固氮菌肥料对土壤微生物活性，养分以及油菜的生物产量、全量养分和品质的影响，旨在确定固氮菌肥料有效应用的最佳土壤氮素范围，为探求油菜作物高产优质的生物调控途径及专性生物复合肥的优化配比提供理论依据。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。