摘要
本文研究了垄作免耕下稻田土壤团聚体和水热状况的变化。结果表明:垄作免耕下的稻田土壤,<0.01mm土粒团聚度有增大的趋势,其中>0.01mm无机微团聚体和>0.01mm级铁、铝-有机微团聚体所占的比例表现为不同程度的提高,而>0.01mm级钙、镁-有机微团聚体显著下降;土壤水热状况处于新的协调状况促进了土壤潜在肥力的发挥。
Study on soil aggregate and soil moisture-thermal regime in paddy field under no-tillage and ridge culture was carried out in east Sichuan Province in 1985—1987. The results indicated that under no-tillage condition of paddy soil the aggregates of<0.01 mm tended to be increased in the aggregates the mineral microaggregates and Fe, Al-organic microaggregates of<0.01 mm increased in varous extent while Ca, Mg-organic microaggregate of<0.01 mm signicantly decreased. Under such condition, the soil was in a new and harmonic state, which would accelerate the promotion of potential soil fertility.
出处
《土壤学报》
CAS
CSCD
北大核心
1990年第2期172-178,共7页
Acta Pedologica Sinica
