摘要
本文对黑龙江省黑土培肥与土壤物理性质的关系作了研宄。结果表明,施用猪厩肥可提高土壤肥力,提高土壤团聚体水稳性指数,增加团聚体内孔隙数量,降低土壤容重,提高土壤贮水量,增加土壤供水强度。研究结果为减少土壤耕作次数提供了理论依据。
The soil fertility in Heilongjiang Province has decreased and its physicalproperties become poorer as a result of frequent tillage since 1950s. The experimental results indicated that pig manure played an important role in soil fertility improvement. The water stability index and porosity of the aggregates increased, the bulk density decreased. The experimental results provided the theoretical base for reducing the times of tillage.
关键词
黑土
培肥
土壤
物理性质
black soil, application of manure, physical properties of soil, Heilongjiang Province
