局部施磷对玉米磷、锌拮抗作用的影响
作者:
作者单位:

(1.贵州省农业科学院辣椒研究所,贵州 贵阳 550006;2.西南大学资源环境学院,重庆 400716)

作者简介:

王岩(1991-),男,内蒙古赤峰人,硕士研究生,研究方向为植物养分资源管理。E-mail:270237985@qq.com。

通讯作者:

基金项目:

基金项目:现代农业产业技术体系专项资金(CARS-24-G-19);贵州省科技计划项目(黔科合支撑[2018]2329;黔科合平台人才[2017]5709)。


Effects of local application of phosphorus on the antagonism of zinc and phosphorus in maize(Zea mays L.)
Author:
Affiliation:

(1.Pepper Research Institute of Guizhou Academy of Agricultural Sciences,Guizhou Guiyang 550006;2.College of resources and environment of Southwestern University,Chongqing 400716)

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
    摘要:

    以玉米为试验材料,采用分根装置(设置A、B根室),研究了不同锌水平下局部施磷或整体施磷对玉米生长以及锌、磷含量的影响。试验设置3个磷水平(0、100、200 mg/kg,分别记为P0、P100、P200),两个锌水平(0、5 mg/kg,分别记为Zn0、Zn5)。玉米生长40 d后收获,测定其地上部与地下部生物量、磷、锌元素含量。结果显示,无锌供应条件下,所有处理地上部和地下部的生物量随施磷水平的提高而显著增加,供锌处理后,生物量变化也有相同的趋势。局部施磷导致施磷一侧地下部生物量显著增加。玉米植株磷含量会随施磷水平的提高而增加,而锌含量呈相反的变化趋势。供锌条件下,供磷(P100、P200)一侧(B室)相对未供磷(P0)一侧(A室)锌含量分别显著降低了16.7%和16.1%;不供锌条件下,锌含量分别降低了13.1%和19.9%。玉米植株锌吸收量与根部生物量(B室)的比值随施磷水平的增加呈下降趋势,且相对于均匀施磷,局部施磷条件导致B室的这一比值显著降低。局部施磷方式加剧了磷对锌的拮抗作用,抑制了根对锌的吸收,同时磷水平的提高抑制锌由地下部向地上部转运;磷、锌拮抗作用的发生是玉米植株的整体反应,而非只发生在局部。

    Abstract:

    The split-root technique(the root was placed in two compartments A and B)was applied to research the effects of local phosphorus application or whole phosphorus application with different zinc application level on the growth of maize and zinc and phosphorus contents.Pot experiment was conducted with different levels of zinc(Zn0,Zn5)and phosphorus(P0,P100,P200)and plant biomass,Zn and P contents were measured after cultured for 40 days.The results showed that the biomass of shoot and root in all treatments increased as phosphorus concentration increased,and same trend occurred when the Zn was supplied.Local application of phosphorus led to increase of root biomass in the room B.The phosphorus content and absorption amount of maize increased with the increase of phosphorus application,however,the zinc content showed the opposite trend.Under the condition of zinc supply,for the P100 and P200 treatments,zinc content in P supply side(room B)was significantly lower than that in P supply side(room A)by 16.7% and 16.1% respectively.Under the condition of no zinc supply,the zinc content of compartment B was significantly reduced by 13.1% and 19.9%.The ratio of zinc uptake to root biomass(B compartment)of maize decreased with the increase of phosphorus application level.Compared with the whole phosphorus application,the ratio in B compartment decreased significantly under local phosphorus application.Local application of phosphorus could promote root growth and absorption of phosphorus in maize,at the same time,the increase of phosphorus level improved the transport of zinc from the root to the shoot.Antagonism of zinc and phosphorus was the whole response,not the local reaction.

    参考文献
    相似文献
    引证文献
引用本文

王岩,郭涛,邢丹.局部施磷对玉米磷、锌拮抗作用的影响[J].中国土壤与肥料,2019,(3):94-99.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:2018-09-11
  • 最后修改日期:
  • 录用日期:2018-10-19
  • 在线发布日期: 2019-06-26
《中国土壤与肥料》招聘启事
关闭