【摘要】 <正> 泥炭是一种重要的肥料资源。近年来,全国各地普遍开展了挖掘泥炭,制造腐殖酸类肥料的群众运动。在实践过程中,这种泥炭腐殖酸类肥料在提高土壤肥力,增加作物产量更多还原

【Abstract】 A tentative system for the classification of the peat distributed in northeastern and northern China is suggested. Present system is proposed for the purpose to see the possibility of this natural resource for agricultural utilization. It includes their classification grades, the details of which can be summarized in following schedule:In the Chinese text of this articles, thc data of the characteristics of eutrophic and oligotrophic peats are analysed, and their correlations with low moor peat, medium moor peat and high moor peat are plotted in Fig. Ⅰ.The chemical and physical properties of peat are illustrated in Fig. 2 to Fig. 8.Table 1 and Table 2 give the system of peat classification. All Figures and Tables are provided with English heading and explanation.更多还原