我国冬油菜种植区土壤镁状况与油菜施镁效果
DOI:
作者:
作者单位:

华中农业大学

作者简介:

通讯作者:

中图分类号:

S565.4

基金项目:

油菜产业技术体系建设专项(CARS-12);国际镁营养研究所合作项目(IMI2018-02)


Soil magnesium status and the effects of magnesium application on rapeseed yield in the main producing area of China
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    油菜是一种需镁量较高的作物,我国冬油菜主产区耕作土壤有效镁供应能力有限,近年来随着产量提高作物从土壤中带走的镁养分量大,而生产上普遍施用氮磷钾养分含量高的化肥从而导致随施肥带入的镁养分极少,镁营养缺乏逐渐成为限制油菜产量的潜在因子。为全面准确评价冬油菜种植区土壤有效镁丰缺状况与油菜施镁效果,本文系统梳理了油菜镁营养研究的主要进展,在揭示油菜需镁量大(20~40 kg Mg/hm2)、我国冬油菜主产区土壤缺镁问题突出(50%以上的土壤缺镁或潜在缺镁)和施镁大幅度增产(平均增产效果大于15%)的基础上,提出了镁是我国冬油菜种植中继氮、磷、钾、硼后第五种需要通过施肥方式进行补充的必需营养元素。

    Abstract:

    Brassica napus, a crop that needs a high amount of magnesium (Mg), is mainly grown in the region where the soils are typically low in plant-available Mg. In recent years, Mg deficiency is becoming a potential factor limiting rapeseed yield due to the unbalance between large removal of Mg under high productivity cropping system and less input under current nutrient management that prioritizing the application of nitrogen, phosphorus and potassium. On the purpose to comprehensively and accurately evaluate the soil Mg status and the effects of Mg on seed yield, the present review summarized the main progress of Mg nutrition research in rapeseed plants. It is indicated that rapeseed requires 20-40 kg Mg/hm2 for better growth and more than 50% of the soils in the main producing area lack sufficient available Mg. The application of Mg fertilizer greatly improved seed yield by more than 15%. Therefore, Mg is the fifth essential element in addition to nitrogen, phosphorus, potassium and boron, that needs to be supplemented by fertilization.

    参考文献
    相似文献
    引证文献
引用本文
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2021-02-05
  • 最后修改日期:2021-02-05
  • 录用日期:2021-03-25
  • 在线发布日期:
  • 出版日期: