土壤性质

This article emphasizes much on its necessity and significance of existence, analyzes its legal nature and validness, and tries to propose and promote some new laws and rules, with the aim to promote the development of international trade and sea transportation.

本文从保函产生存在，发展的现实土壤入手，着眼于保函存废的利弊权衡，重视保函在国际贸易与海事运输中经济价值，分析其法律性质和效力，试图努力构想完善保函的立法及相应配套制度，以求扬长避短，促使海运保函更好地促进国际贸易和海运事业的发展。

Noticeably, after long time sediment and stabilization, the soil structure, soil water content and the vegetational cover conditions of subsidence area are tend to those of nature area. Although abundant water support is unable, it is favor to the sand plant for maintain their growth.

值得说明的是，塌陷稳定区经过长时间的沉压、密实后，其土壤层结构、土壤水分含量等性质以及地表植被覆盖程度均越来越趋近于未塌陷区，对于沙生植被而言，虽得不到充分的供水条件，但仍能维持其生长。

Results showed that in lower soil suction(0～80 kPa),soil moisture-holding capacity accreted with the increasing of water-retaining agents,so did the amount of available water.

利用张力计和恒温脱水动力学方法，研究了不同剂量保水剂施入轻壤质潮土后土壤持水性质的变化。

Four 30 m×5 m transects with a distance of 0, 10, 20, and 30 m from the both sides of a 6-m-ide winding mountain road ere installed to conduct vegetation investigation and soil analysis.

以鼎湖山一条6m宽的盘山公路两旁的群落为研究对象，离道路两侧0、10、20和30m等不同距离处设置30m×5m样带，进行植被调查，并对样带内的土壤进行理化性质分析。

Fly ash and blast furnace slag are two industrial waste materials with pozzolan property, if there can be application to improve geotechnical properties of soils, it contributes to reduce environmental pollution problems.

飞灰与高炉炉石等工业废料与水泥具有相同波索兰特性，如果能应用它们，进行土壤工程性质的改善，如此可将废料资源化再利用，对环境造成之污染影响亦可减轻。

According to the situation of plants scarce on soil refuse dump of coal mine,and extremely slow native settlement process of vegetation and ecosystems,soil and the coal-fly-ash have been analysed for the physical and chemical nature.

针对煤矿排土场上植物稀少、植被的自然定居和生态系统的原生演替过程极其缓慢的现状，采用实验分析的方法，初步探索了排土场土壤和粉煤灰的理化性质。

In addition, the paper also introduced bad influences of tourism development on ecosystem and landscape, such as partial breakage of vegetation, soil erosion and the changes of soil chemical and physical properties, the decrease of wild animals, the increase of bacteria, dust and exhaust gas in the air and water pollution.

还介绍了旅游对牛态系统组成和景观的负面影响研究，如旅游对植被的局部性破坏，造成土壤侵蚀和婵化性质的变化，减少野生动物的数量，增加空气中细菌、灰尘和废气的含量，造成水体污染等。

Based on the field surveys on a wide scale, the systematic studies were made on soil acid properties, particle fractions, exchangeable performances, saturated base, free feeric properties, clay chemical components, clay mineral types and their properties of genesis.

在大量野外调查的基础上，系统地研究了土壤的酸性特征、颗粒组成、交换性能、盐基饱和度、铁的游离度、粘粒化学组成及粘土矿物类型等发生学性质。

The results show that the BST is a nice nitrogenous fertilizer resources and to some extents,equal and superior to traditional nitrogenous fertilizer urea and sulphuric acid ammonia.

结果表明，BST是很好的氮肥资源，等同于或某种程度上优于尿素和硫酸铵。对土壤的理化性质、氨态氮、硝态氮含量以及对作物吸收Ca，Mg，K等养分和生长发育的影响与常规氮肥相似。

However, information on agricultural practice to improve this kindof soils is rather scanty. In the present study, field experiments were conducted tostudy on effects of fertilization practices on the physico-chemical properties and thecrop productivity in gleyed paddy soils from the slate in Taojiang county and theQuaternary Red Clay in Ningxiang county, respectively.

本文通过田间小区试验，研究了几种施肥措施对桃江县板页岩母质发育的潜育性稻田和宁乡县第四纪红土发育的潜育性稻田的土壤的理化性质以及作物生产力的影响，以期为这两类退化稻田的改良修复提供依据。

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