摘要
本文研究了钙质紫色土在连续四年免耕、垄作、秸杆覆盖下的土壤水肥状况的变化。结果表明，免耕使土壤容重下降，秸杆覆盖提高土壤田间持水量、抑制水分蒸发、增加养分积累，垄作可形成深厚的土壤结构层，有利于土壤养分活化。免耕、垄作、秸杆覆盖相结合能改善并维护土壤结构，提高土壤肥力。
Studies on soil fertility changes of calcium purple soil under continuous cultivation of no-tillage and mulch straw farming from 1992-1995 were conducted. Results showed that soil bulk density were decreased by no tillage. ridge cultivation could form deep soil layer, and are favorable to activating soil nutrients. Mulch straw could increase soil nutrients accumulaion, inhibit soil water evaporation and keep soil structure. Combined measures of no-tillage, mulch straw and ridge cultivation can improve and increase soil fertility.
出处
《西南农业学报》
CSCD
1996年第3期94-99,共6页
Southwest China Journal of Agricultural Sciences
基金
四川省重点科研项目
