摘要
针对我国东北地区玉米生产状况和发展趋势,对玉米大幅度增产和可持续增产的限制性因子进行探讨。分析指出:随着生产力水平的提高,耕层过浅问题越加突显;浅耕是生产水平低下时期的耕作方式,要实现玉米大幅度增产和可持续增产必须在耕层改造上下工夫;耕层太浅是阻碍玉米秸秆还田的根源所在;目前在土壤耕作上还存在一些误区。
Aiming at the maize production and development situation in Northeast of China,the limiting factors for sharply and sustainable yield-increasing of maize were analysed in the study. The analysis indicated that, with the improvement of productivity level, too shallow topsoil depth became more problematic. Shallow tillage was a cultivation at low productivity level period. The topsoil depth condition must he improved in order to make sure sharply and sustainable yield-increasing of maize. The source of blocking maize straw returning to filed was too shallow topsoil depth. There was still misunderstanding concerning soil tillage at present.
出处
《辽宁农业科学》
2013年第3期52-54,共3页
Liaoning Agricultural Sciences
基金
国家科技支撑计划
东北平原南部(辽宁)春玉米水稻持续丰产高效技术集成创新与示范(2011BAD16B12)
辽宁春玉米粳稻大面积均衡增产技术集成研究与示范(2012BAD04B00)
关键词
耕层
土壤
玉米增产
限制因子
Topsoil Depth
Soil
Yield-increasing of maize
Limiting factors
