The aim of the studies is to: (i) Identify the major environment factor (soil, hydrology, climate and biology) which affect to growth and yield of rice  on acid sulphate soils (ii) Recommend some criteria for classification of land capability. The study conducted in Go Quao, Tri Ton; Tam Nong districts. The results show that the limited environmental factors for rice yields on acid sulphate soil based on field survey and soil analysis including 19 factors. In which soil fertility has 8 factors including of: acidity (A), soil salinity (E), the occurrence depth of sulfuric horizon (G), the occurrence depth of sulfidity material (F), low of total nitrogen (N), low of phosphorus (P), low of minerals (K), low of organic matter (O), structure (C). Hydrology factor consists of: less active irrigating (k), less active drainage (d), depth of inundation (n), waterlogged (g), acid sulphate water (p) and saline water (w). Climate factors consists of: drought duration (h), rainfall duration (m), temperature (t). Biological factors consists of: rice varieties (i) and occurrence of pest (z). Besides, the study has developed the criteria applying for rice field classification as the basis for land resourses management and rice yield improvement.

Keyword: Resources, classification, acid sulphate soil.