Section 1 Soil colloidal surface nature Surface types of the soil colloid (一) Siloxane surface (二) Hydrous oxide surface (三)Organic matter surface

Section 1 Soil air 一、 Composition of soil air Compare soil air with atmosphere( Volume % Atmosphere

Section 1 The types of soil water and measuring soil moisture a

Section 1 Soil three phases Constitution Soil density and bulk density (- Soil density (or Particle density Soil density is the density of the solid soil particles only; the measurement does not include water weight or pore(air)space. The dominant soil minerals- quartz, feldspars, micas, and clay minerals

一.为什么要了解土壤有机质? 二土壤有机质是什么?有多少? 三.土壤中有机质如何转化? 四.土壤腐殖质如何存在? 五.土壤腐殖质有什么作用?如何更好地发挥这种作用?

Section 1 The chemical and mineral constitutes of soil parent minerals The chemical constitutes of soil parent minerals

HOME BACK FORWARD! PRINT SEARCH EXI INTRODUCTION Major soils of the world ORGANIC SOILS Mineral soils World Reference base for soil resources: atlas

Introduction to soil science By Genxing pan Department of Soil Science, Inst Resources, Ecosystem Environment of Agriculture(Ireea) www.ireea.kyig.njau.edu.cn

填空 1.离断精索除去睾丸的方法有 2.小公猪阉割术时采用 侧卧保定,小母猪阉割术时采用_ 侧固 保定

名次解释 1.外科感染2.脓肿3.蜂窝织炎4.败血症 分析与综合 1.制定脓肿的治方案 2.制定蜂窝织炎的治方案?