土壤性质

But there was little effect on the total P, rapidly available P and physical water chara...

适当地施肥并不会对土壤理化性质和生态环境造成剧烈的影响。

Regional development occupies large land, develops lots of contents, relates to multifields including industry, construction, business and civicism, so it is necessary to identify its influence on nature environment such as air, groundwater quality, surface water quality and hydrological condition, sound, soil, plants, topographty and social environment such as population, traffic, economic structure. The countermeasures of carring through circular economy, controlling pollution sources, planning industrial structure scientifically, distributing reasonably, implementing cleaner production and total quantity control should be taken to promote regional sustainable development.

区域开发具有较大的不确定性，并且占地面积大、开发的内容广、性质复杂、建设周期长，通常的区域开发都有可能涉及到工业、城建、商业、人居、市政等多个领域的开发活动，所以区域开发必须结合区域开发的特征，准确识别其可能对区域内及其周边的空气环境、地下水质量、地表水水质及水文条件、声环境、土壤、植被、地形地貌等自然环境和人口、交通、经济结构等社会环境等产生的影响，并采取发展循环经济，减少污染生成的源头控制措施；科学规划产业结构，合理布局的预防性措施；源内达标、区域集中控制的污染治理措施；实施清洁生产、总量控制，推进区域环境与经济的持续发展。

Compared with hole-planting, the cropping pattern of row-planting was in favor of germination and tiller of banana dasheen, and was beneficial to the improvement of permeating conditions and physicochemical properties of soil, so as to increase banana dasheen yield.

结论］行栽的种植模式较窝栽有利于芭蕉芋的萌发和分蘖，有利于改善土壤的通透条件及理化性质，从而增加芭蕉芋的产量。

This paper studied changed properties of soils in the typical ecotone of Duolun County, Inner Mongolia for two years.

以典型生态脆弱区内蒙古多伦县为例，连续2a进行了沙漠化对土壤理化性质的影响研究。

The effects of exclosure on soil properties were analyzed.

阐述了围封对草地土壤理化性质的作用机制。

Keywords soil;copper;forest type;heavy metal;physical and chemical property;adsorption;affecting factor

土壤；铜；林分类型；重金属；理化性质；吸附作用；影响因素

The change of matric suction is very significant because of density changes.

本文对非饱和黄土的物理力学性质及渗透特性进行了阐述，并对非饱和黄土中水势的构成进行了分析；根据离心机法测定土壤水分特征曲线随温度和干密度的变化情况。

Sown grass ; plum orchard ; soil temperature ; chemical and physical characters

生草；李园；土壤温度；理化性质

Tentatively, this study introduced simple and economical Dynamic Cone Penetrometer and Impact Soil Tester for facilitating the investigation of subgrade and upgrading its quality.

为此，本研究尝试导入简易且低价位之动态圆锥贯入仪与土壤冲击测定器，来调查路基之工程性质。

In all soils and sediments, sorption isotherms for naphthalene are significantly more linear than those for phenanthrene, which is related to the property of two sorbates.

对相同土壤/沉积物样品，萘的吸附等温线要比菲的吸附等温线的线性要好些，这与它们的物化性质有关。

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