soil purification

The three cultivars reached the highest level of soil purification rate when soil Zn concentration was 25 mg / kg .

土壤有效锌含量为25mg/kg时，黄花、红花和白花品种的净化率达到最高。

Prevention and cure peanut leaf spots by controlling primary infection source had been studied during 1986 ~ 1991 . The results verified the soil purification had significant effect on preventing the disease .

自1986到1991年对控制初侵染源防治花生叶斑病进行了试验。

5 ) The main factors influencing loessial soil purification to Cr ( VI ) and As ( V ) are pH , organic matter , calcium , iron , aluminous compounds and contents of mucilaginous grain etc.

影响黄土对Cr（Ⅵ）、As（Ⅴ）起净化作用的主要因素有pH、有机质、铁、铝、钙化合物、土壤粘粒含量等。

Soil purification system because of low expenditure , without secondary pollution etc , increasingly become one of the hotspots of sewage disposal technical research . But at present soil purification system of sewage has disadvantage of large space , low hydraulic loading and so on .

污水的土壤净化系统以其费用低，无二次污染等优点，越来越成为国内外污水处理技术的研究热点之一，但是现有的污水土壤净化系统普遍存在占地面积大，水力负荷低等缺点。

Bases on some researches on the laws of soil pollutants purification , the problems and countermeasures of the urban rainwater utilization in China were discussed .

结合国内外在土壤对污染物的净化规律的部分研究成果，探讨了中国城市雨水利用工作中存在的问题以及对策。

The ecosystem function of water conservation , soil conservation , air purification , CO_2 fixation and O_2 ( release ), tourism of Wuyi Mountain were first evaluated by the methods of opportunity-cost , market price , shadow project price .

使用市场价格替代法、机会成本法和影子工程价格法等评估方法，对武夷山自然保护区森林涵养水源、保持土壤、净化空气、固碳制氧等服务功能进行初步估算。

In order to Prevent Pollution to soil layer and underground water while runoff infiltrates into soil , the Purification of roof runoff layer is studied .

但为保证雨水渗入地下后不污染土层和地下水源，本文研究了屋面雨水在天然和人工配制的两种土壤中水平流动的净化作用及其规律。

As an important part of the terrestrial ecosystems , the microbe plays important roles in a variety of ecological processes , including soil formation and development , organic matter transformation , balance of ecosystems , soil environmental purification , and bioremediation .

土壤微生物是陆地生态系统的重要组成部分，在土壤的形成与发育、有机质转化、生态系统平衡、土壤环境净化与生物修复等方面均起着重要的作用。