workable soil

Heavy metals contamination for cultivated soils,vegetables and rice in the vicinity of non-ferrous metals industry;

有色矿业区耕作土壤、蔬菜和大米中重金属污染

Study on potassium release rate and the relation of the rate to potassium availability in Cultivated soils;

耕作土壤释钾速率及其与钾有效性的关系研究

Spatial autocorrelation analysis of heavy metals in cultivated soils in Beijing

北京耕作土壤重金属含量的空间自相关分析

Changing trend of organic matter and nutrient content in cultivated land of the Ningxia irrigation area of yellow river;

宁夏引黄灌区耕地土壤有机质及养分质量分数变化趋势

It has been 20 years since the Second Soil Census,in order to know the dynamic change of soil phosphorus,the data of soil phosphorus in cultivated land in Ankang from 1995 to 2003 is analyzed and the result is compared with the Second Soil Census.

第二次土壤普查迄今已20年,为了摸清土壤磷素的变化动态,对安康市1995～2003年耕地土壤有效磷化验资料进行了统计分析,并与第二次土壤普查结果进行了比较研究,结果表明,土壤有效磷呈上升趋势,严重缺磷土壤减少,但中高山地区土壤缺磷依然严重。

Study on Cu content in cultivated soils and its influence factors in Guangxi;

广西耕地土壤铜的含量及其影响因素

Geostatistical methods were used in combination of GIS to analyze the spatial distribution characteristics of total K and available P in cultivated soils in Xinhui district,Guangdong Province,over 20 years from 1982 to 2003.

结果表明,研究区域耕地土壤由于20年来的耕作施肥使得土壤全钾和有效磷含量显著增加,土壤全钾在研究区域的南部变化最明显,与该地区的土壤类型为咸田有很大关系;耕地土壤全钾和有效磷的空间分布都表现为中等空间相关性;土壤全钾和有效磷变程的变化与土壤养分在土壤中化学行为有关。

In this project, analytical data of 20 items from 367 of cultivated soil samples in Minhou county were selected, and principle component and gray relation analysis methods were used for revealing the relationship between soil properties and environmental factors.

耕地土壤性质与气候、地形、母质等自然环境和人类活动存在错综复杂的内在联系 。

SOIL'S ENZYME ACTIVITY IN DIFFERENT CONSERVATION TILLAGE IN SLOPING LAND

旱作坡耕地保护性耕作土壤酶活性研究

prepare for crops, of soil.

为农作物做好耕作土壤的准备。

Microbial Characteristics of Conservation Tillage in Paddy Soil;

稻田保护性耕作土壤微生物特性研究

Study on Homogeneity Distribution of ~(137)Cs in Agricultural Soils

~(137)Cs在耕作土壤中的均一性分布研究

Freezing-Thawing Condition of Main Dryland Farming Soil Areas in Northeast China

东北主要旱地耕作土壤冻融环境分析

Multi-scale spatial structure of heavy metals in Beijing cultivated soils

北京耕作土壤重金属多尺度空间结构

Effect of Heavy Machinery Operation on Soil Aggregates Character in Phaeozem Region

机械压实对黑土区耕作土壤团聚体特征的影响

Some soils are not suitable for farming.

有些土壤不适于耕作。

tillage machine with power-driven working parts

驱动型土壤耕作机械

Clay makes the soil hard to work when wet and it cracks when dry.

粘土遇湿使土壤无法耕作，遇旱使土壤发生龟裂。

Effect of different farming methods on soil microbial biomass and soil fertility

耕作方式对土壤微生物和土壤肥力的影响

Incorporation of crop residues; conventional tillage.

把作物残体混入土壤的传统耕作制。

Tilth's the quality of a soil which makes it easy to cultivate and easy for the roots of plants to grow.

耕性指的是使土壤易于耕作，根系易于生长的一种土壤性状。

to exhaust by excessive cultivation, of land.

由于过分的耕作而使土壤变得不肥沃。

Impoverish the soil by overuse.

过度耕作而使土壤变得贫瘠

someone concerned with the science or art or business of cultivating the soil.

研究土壤耕作的科学、技术、或商业的人。

Experimental Study on Soil Wind Erosion with Conservation Tillage Treatment;

保护性耕作防治土壤风蚀的试验研究

Effects of Conservation Tillage on Soil Organic Carbon Fractions

保护性耕作对土壤有机碳组分的影响