Sectionl Concept of soil tillage and basic manipulation Concept of soil tillage Tillage- The mechanical manipulation of the soil profile for any purpose

Chapter 9 Soil acid-base and redox reaction 中国土壤酸碱度分布图

Chapter 8 Soil colloidal chemistry and soil surface reaction 阳离子交换机制

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 co

Section 1 Soil three phases Constitution Soil density and bulk density (一) 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-

第二章土壤有机质 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

HOME BACK FORWARD PRINT SEARCHHELPEXIT INTRODUCTION Maior 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.kyjg. njau.edu.cn