Modeling Methane Emission from Rice Paddy Soils:Ⅰ.Model Development
HUANG YAO;R. L. SASS and F. M. FISHER

..............page:1-10

Modeling Methane Emission from Rice Paddy Soils:Ⅱ.Model Validation and Application
HUANG YAO;R. L. SASS and F. M. FISHER

..............page:11-24

Indices of Sulfur-Supplying Capacities of Upland Soils in North China
LIN BAO;ZHOU WEI;LI SHUTIAN and WANG HONG

..............page:25-34

Influence of pH on Formation of Taranakites
ZHOU JIANMIN and P. M. HUANG

..............page:35-44

Determination of Organic Acids in Root Exudates by High Performance Liquid Chromatography:Ⅱ.Influence of Several Testing Conditions
SHEN JIANBO;ZHANG FUSUO and MAO DARU

..............page:45-52

Could Acid Sulfate Soils Be a Potential Environmental Threat to Estuarine Ecosystems on the South China Coast?
C. LIN

..............page:53-59

Integration of Soil Information System and Interactive Self-Organizing Data for Agricultural Developing Zones in Red Soil Region
SHI ZHOU;WANG RENCHAO and M. AL-ABED

..............page:61-68

Angular Distribution of Element Contents in Tree Rings and the Environmental Information
KE SHANZHE;LIU ZHENGRONG;QIAN JUNLONG;CHEN RUSONGI and KE XIAOKANG (Garded and Greenbelt

..............page:69-76

Nutritive Equilibrium in Rice Plant Populations for High Yield
WANG BOLUN;LIU XINAN;YU GUIRUI;SU ZHENGSHU and WANG SU

..............page:77-82

Soil ³⁵S Transformation and Availability to Plants
ZHOU WEI and PAN JIARONG

..............page:83-90

1Assessing Soil Available Potassium by Cation Exchange Membrane and Conventional Chemical Extractions
LIU ZHAOHUI;J. SCHOENAU;QIAN PEIYUAN and NIE YAN (Center Lab.;Shandong Academy of Agricultural Sciences;Jinan 250100

..............page:91-96