A STUDY ON COMPOSITION AND CHARACTERISTICS OF HUMIC SUBSTANCES IN BLACK CLAY SOILS
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S153.622
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Abstract:
The composition,contents and optical,properties of humus from several typical profiles of black clay soils in temperate zone of China were studied.The results show that HA2(black humic acid)is the main fraction of humic acid,HA-3 is the secondary and HA-1
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李卫东 王庆云. A STUDY ON COMPOSITION AND CHARACTERISTICS OF HUMIC SUBSTANCES IN BLACK CLAY SOILS[J]. Jorunal of Huazhong Agricultural University,1996,15(6).