【摘要】 <正> 一、前言 白浆土是东北东部山区三大非地带性土壤之一,占地面积较大,目前是农业和林业的主要用地之一。白浆土主要的理化性质可概括如下:具有肥沃的表层,贫瘠恶劣的亚表层,粘重的底层。存在的主要问题是养分总贮量不高、土壤水分物理性质不良。如何利用和改良白浆土多年来已提出了一些具体的解决办法,如增施磷肥、加强耕作管理,更多还原

【Abstract】 Baijing Soil is one of the azonal soil in the east part of northeast China. It occupies large areas, whose physico-chemical properties are bad and infavourable for agriculture-forestry production and intensive farming. For many years phosphorous fertilisers have been used and cropping management and standing preferential tree species have been chosen to improve the quality of the soil.Author studied the effect of the community structure of artificial larch wood on its physicochemical properties during the period of 25 years (1058—1983) and brought up the result that 2-row construction is the best one to improve the soil property.更多还原