soil acidity

Effect of soil acidity adjustment on growth and quality of tobacco

调节土壤酸度对烤烟生长和品质的影响

Effect of plant residues on soil acidity and its mechanisms

植物残茬对土壤酸度的影响及其作用机理

Effect of soil acidity on distribution and chemical forms of heavy metals in soil

土壤酸度对重金属形态分配的影响

Soil Acidity and Sustainable Utilization of Land Resource

土壤酸化与土地资源可持续利用研究

Reduce soil acidity and improve soil texture

减轻土壤酸性和改良土壤结构

Effects of soil acidity adjustment on nutrient absorption and dry matter accumulation in tobacco

土壤酸度的调节对烤烟养分吸收、干物质积累的影响

Growth of barley in relation to soil acidity

大麦生长与土壤酸度的关系

Zeolite could release soil acidity , increase soil pH and decrease exchangeable Mn .

沸石能减轻土壤酸化程度，提高土壤pH值，降低EXC-Mn。

Soil acidity change of Larch plantations and relation between change and inorganic phosphorus types

落叶松人工林土壤酸度变化与无机磷形态的关系

Effect of dolomite application on soil acidity and yield of rapeseed on yellow - red soil

施用白云石粉对黄红壤酸度和油菜产量的影响

The effect on soil acidity order was as follow : Al + Cd Al Cd .

对土壤酸度的影响按大小顺序为Al+CdAlCd。

Influence of lime and serpentine-fused phosphate on tobacco production and soil acidity regulation

石灰、钙镁磷肥对烤烟生产及土壤酸度调节的影响

Both nitrogen and sulphur emissions are major contributors to soil acidity and environmental pollution .

氮和硫的排放物是造成土壤酸度和环境污染的两大主要来源。

Increases in Soil Acidity in North-West Wales Between 1957 and 1990

1957～1990年西北威尔士地区土壤酸性的增加

Spatial and temporal variability of soil acidity in typical areas of Taihu Lake region in the last 20 years

近20年来太湖流域典型地区土壤酸度的时空变异特征

Variation of the soil acidity in different land use field and different rainfall precipitation regions in the past half century was studied ;

对半个世纪以来不同土地利用方式下土壤酸度变异以及不同降雨区土壤酸度变异进行了研究。

The major results are as follows : 1 . Soil acidity was greatest decreased in the incorporated lime treatment .

主要研究结果如下：1、翻施石灰可以有效降低土壤酸度。

Vegetation uptake of nitrogen and base cation , as well as acid deposition , is an important source of soil acidity .

植被对氮和盐基阳离子的吸收是除酸沉降外另一个重要的土壤酸度来源。

Soil acidity , organic carbon , total nitrogen and total soluble phenol of the soil increased with the age of tea plants .

同时，土壤有机碳、可溶性酚总量和全氮含量随树龄而增加。

The soil acidity affected on acidity inside mulberry plant body . Acid environment inside plant body promoted the soluble protein content increasing .

土壤酸度影响到桑树植株体内的酸度，酸环境有助于可溶性蛋白质含量的增加。

Soil acidity and alkalinity .

土壤酸碱度因子。

The OICFTR had little effect on the soil acidity , but the carbamide did .

茶渣肥对土壤酸化具有缓冲作用，而尿素对土壤则没有缓冲作用；

The pH value , electric conductivity of soil acidity and alkalinity , and neutralization capacity of acid were analyzed comprehensively for 9 kinds of soil .

通过对9种供试土样的pH值、土壤盐碱性的电导率和酸中和容量的综合试验分析。

The combination of Aluminium toxicity with soil acidity is a major crop growth limiting factor in over 40 % of the arable land in the world .

世界上40%以上的耕地因为铝离子毒性和土壤酸性的综合作用而限制了农作物的生长。

The results showed that establishment of mixed plantations improved structure and nutrient status of the soils . The nutrient availability was increased due to declined soil acidity .

结果表明，混交林能有效地改善林地土壤结构，提高土壤有机质和营养元素的含量，并通过降低土壤酸度，增加了养分有效性。

Significant vertical difference of soil acidity and contents of Al forms existed in the ASS and most of them were increased along with the increasing of depth ;

土壤酸度和铝形态含量的层间差异较为显著，多数随深度增加呈逐渐上升的趋势。

Effects of so_4 ~ ( 2 - ) and cl ~ - fertilizers on soil acidity and nutrient availability of paddy in southern Hunan Province

含硫及含氯化肥对湘南水田土壤酸度和养分有效性的影响

After the treatment of flooding-drying , amorphous iron / aluminum oxide and free iron / aluminum content increased , whereas soil acidity and available phosphorus content decreased .

土壤在经过淹水-落干处理后，土壤的非晶形氧化铁铝与游离铁铝含量均有所增加，土壤酸度下降，土壤有效磷的含量降低。

As for nutrient type , the content of exchangeable Ca , exchangeable Mg and available P are more significantly correlative with soil acidity than other nutrients .

不同养分比较，交换性Ca和Mg以及有效P含量比其它养分更容易受到土壤酸度的影响。

Firstly , the experiments on Mt. Hengshan 's soil acidity prove that the time and space change of Mt. Hengshan 's soil acidity is obvious .

首先选取衡山不同垂直带谱上5个代表性地点不同年代的土壤样品，通过实验分析得出，衡山土壤酸度时空变化明显。