湖北农业科学 ›› 2020, Vol. 59 ›› Issue (20): 51-55.doi: 10.14088/j.cnki.issn0439-8114.2020.20.011

• 资源环境 • 上一篇    下一篇

油菜秸秆还田对土壤养分供应的影响

黄乙琼, 刘蓉, 赵长坤, 施良, 杨国涛, 王学春, 胡运高   

  1. 西南科技大学水稻所,四川 绵阳 621010
  • 收稿日期:2020-02-27 出版日期:2020-10-25 发布日期:2020-12-04
  • 通讯作者: 胡运高,男,四川三台人,研究员,主要从事水稻遗传育种工作,(电子信箱)swust.rri@163.com。
  • 作者简介:黄乙琼(1999-),女,四川雅安人,在读本科生,研究方向为农学,(电话)13408351129(电子信箱)2750818295@qq.com。
  • 基金资助:
    四川省省级大学生创新创业训练计划项目(S201910619112);西南科技大学大学生创新基金项目(CX19-069);国家重点研发计划(2017YFD0301706-03);四川省十三五水稻育种攻关项目(2016NYZ0028);四川省教育厅项目(18zb0615)

Effect of returning rape straw to the field on soil nutrient supply

HUANG Yi-qiong, LIU Rong, ZHAO Chang-kun, SHI Liang, YANG Guo-tao, WANG Xue-chun, HU Yun-gao   

  1. Institute of Rice,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China
  • Received:2020-02-27 Online:2020-10-25 Published:2020-12-04

摘要: 为研究免耕条件下油菜秸秆还田对土壤养分的影响。通过盆栽和连续田间试验,设置不同的油菜秸秆还田量,探索了免耕条件下油菜秸秆还田量对秸秆腐解率和不同土层氮、磷含量的影响。结果表明,还田量对秸秆腐解规律无显著影响,全量还田时最终秸秆腐解率最高;秸秆全量还田后耕作层氮、磷含量最高,连续秸秆还田对耕作层氮素的补充效应大于磷素;长期秸秆还田可以减少犁底层以下氮、磷含量,有利于减少养分的渗漏损失,降低资源浪费和环境污染。

关键词: 油菜, 秸秆还田, 土壤养分, 补偿, 渗漏

Abstract: In order to study the effect of rape straw returning to the field on soil nutrients under the condition of no tillage, different amount of rape straw returning to the field was set through pot and continuous field experiments to explore the effect of rape straw returning to the field on straw decomposition rate and nitrogen and phosphorus content in different soil layers under the condition of no tillage. The results showed that the amount of returning field had no significant effect on straw decomposition. The final straw decomposition rate was the highest when the whole amount was returned to the field. The highest nitrogen and phosphorus content was found in the tillage layer after the straw was returned to the field. The effect of continuous straw returning on nitrogen supplement of tillage layer was greater than that of phosphorus. Long term straw returning can reduce the content of nitrogen and phosphorus under the bottom of plough, reduce the loss of nutrient leakage, reduce the waste of resources and environmental pollution.

Key words: rape, straw returning, soil nutrients, compensation, leakage

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