Owing to the periodically dry and wet climate in the year,the moisture status of the surface 30 cm.of the Shajiang dark soil occurring in districts north of Huai river is variable.The soil has a water table varying from 110 to 190 cm.throughout the year,and a rather constant moisture content in 30-100 cm layer.
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袁从禕,袁一琴.淮北砂薑土(砂薑黑土)水分性貭的一些特点[J].土壤学报,1962,10(4):361-373. C. I. YUAN, I. C. YUAN. ON THE CHARACTERISTICS OF MOISTURE STATUS OF THE SHAJIANG DARK SOIL IN DISTRICTS NORTH OF HUAI RIVER[J]. Acta Pedologica Sinica,1962,10(4):361-373.