topsoil是什么意思

网络释义

用法例句

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。

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

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

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

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

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

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

RELATIONSHIP BETWEEN LAND USE AND SOIL SALT IN INTENSIVE AGRICULTURAL REGION;

集约化华北冲积平原农区土地利用变化与土壤耕层盐分关系

Investigation of Mercury Content in Plough Layers of Main Soil Types in Henan Province

河南省主要土类土壤耕层中汞含量的抽样调查与分析

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

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

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

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

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

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

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

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

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

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

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