1)Topsoil[英]['t?ps??l][美]['tɑp's??l]耕层土壤
1.Distribution and Characteristic of Topsoil Microelements in Shouguang City;寿光市耕层土壤微量元素的分布特征
英文短句/例句
1.Temperature and depth's dependences on N_2O emission in the cultivated layer soil耕层土壤N_2O排放与温度及土壤深度依变性
2.Effects of Different Manure Sources on Soil Characters in Upland Red Soil不同有机肥源对红壤旱地耕层土壤性质的影响
3.Effect of Long-term Fertilization on Soil Plough Layer Carbon Storage in a Reddish Paddy Soil长期施肥对红壤稻田耕层土壤碳储量的影响
4.Spatial Heterogeneity of Soil Nutrients in Liaocheng, Shandong Province山东省聊城市耕层土壤养分的空间异质性分析
5.Study on Correlativity Change of Surface Soil Nutrients in Intensified Agricultural Regions集约农区耕层土壤养分相关性变化研究
6.Research of changing characteristics and control factors of farmland topsoil organic carbon in China中国农田耕层土壤有机碳变化特征及控制因素
7.Study on spatial variability of soil nutrients in the plow layer in Chaoyang town基于乡镇级耕层土壤养分空间变异研究
8.Effects of conservation tillage on soil nutrients and enzyme activities in rainfed area保护性耕作对旱作农田耕层土壤肥力及酶活性的影响
9.Spatial Variability of Nutrients in Irrigation-siltedSoilinYinchuan, Ningxia;宁夏银川平原灌淤土耕层土壤养分空间变异性研究
10.Soil Properties and SEM Features of Diagnostic Horizon of Stagnic Anthrosols in Southwestern,China西南地区水耕人为土诊断层土壤特性及SEM特征
11.Chromium(Cr)Level in the Main Topsoil in Henan Province河南主要土类土壤耕层铬(Cr)含量抽样调查
12.Sample Investigation of Arsenic (As) Content in Main Topsoil of Henan Province河南省主要土类土壤耕层砷(As)含量的调查
13.Sample Investigation of Nickle(Ni) Content in Main Topsoils of Henan Province河南省主要土类土壤耕层镍(Ni)含量调查
14.Soil Temperature Variation in Plough Layer and Soil Freeze-Thaw Characteristics during Seasonal Freezing and Thawing Period季节性冻融期耕作层土壤温度及土壤冻融特性的试验研究
15.Research on the Vertical Distribution Characters of Availability Zn in Different Plough Horizons不同土壤耕层有效锌垂直分布特征研究
16.Effect of different corn stubble treatments on soil moisture of tillage layer玉米茬不同处理方式对土壤耕层水分的影响
17.Method for Soil Moisture Calculation in Plough Layer Based on Antecedent Effective Rainfall基于前期有效降水推算耕作层土壤湿度的方法
18.Effect of Different Cultivation Methods on Maintenance Capacity of Water and Fertilizer,Surface Soil and Yield of Corn不同耕作方式对土壤耕作层水、肥保持能力及玉米产量的影响分析
相关短句/例句
plough layer土壤耕层
1.By simulating the movement of groundwater in soil plough layer, the pollution characters of groundwater contaminated by salinity and heavy metals in the plough layer were researched under different water tables, different pollution levels and various texture soils.通过模拟不同水位、污染度的地下水在不同质地土壤耕层中的迁移,进行了地下水中盐分和重金属对土壤耕层污染规律的研究。
3)farming soil耕作层土壤
1.Influence of coal gangue pile on the concentration of heavy metals in farming soil;煤矸石堆放对周围耕作层土壤中重金属含量的影响
4)cultivated soil耕作土壤
1.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
2.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
3.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
5)Cultivated land耕地土壤
1.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
2.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。
6)Cultivated soil耕地土壤
1.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
2.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。
3.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 。
延伸阅读
土壤发生层简称土层，为土壤剖面上表现出的水平层状构造。反映了土壤形成过程中物质的迁移、转化和累积的特点。其野外鉴定特征主要包括土壤颜色、质地、结构、松紧度和新生体等。一定的土壤发生层与一定的成土过程相联系。腐殖质化过程广泛分布于自然界，故各种土壤剖面上部大都具有暗色的腐殖质层。淋溶和淀积过程对土壤剖面的分化具有重要意义，在寒带或寒温带针叶林植被下强有机酸参与的淋溶过程（灰化过程）形成强酸性的灰白色土层——灰化层；热带、亚热带生物—气候条件下，伴随强烈风化作用的土壤淋溶过程，形成富含铁铝氧化物的土层；干旱与半干旱环境中与可溶盐分淋失和积聚的不同强度相联系的各种成土过程，形成盐土层、钙积层和石膏层等。此外，与土壤粘化过程相联系的土壤发生层有粘化层；与土壤氧化还原过程相联系的有潜育层；与土壤碱化过程相联系的有碱化层等。一种类型的土壤往往存在几个成土过程，不同的土壤则具有不同的成土过程组合，因此也就有不同土壤发生层的组合。如暖温带阔叶林下的棕壤具有两个成土过程，即腐殖质化过程和粘化过程，其剖面主要由腐殖质层、粘化层和母质层构成；温带草甸草原植被下的黑钙土，具有明显的腐殖质累积过程和钙化过程，其剖面主要由腐殖质层、钙积层和母质层构成。土壤发生层及其组合是土壤分类的主要依据，也是决定土壤肥力高低的重要因素。
