北方农业学报 ›› 2020, Vol. 48 ›› Issue (3): 103-108.doi: 10.12190/j.issn.2096-1197.2020.03.16

• 土壤肥料·节水灌溉 • 上一篇    下一篇

深松对春玉米田土壤物理结构及玉米根系指标的影响

高鹏1, 孙继颖1, 高聚林1, 于晓芳1, 王志刚1, 胡树平2, 刘剑2, 包海柱1, 纪楠1   

  1. 1.内蒙古农业大学 农学院,内蒙古 呼和浩特 010019;
    2.内蒙古农业大学 职业技术学院,内蒙古 包头 014109
  • 收稿日期:2020-04-15 出版日期:2020-06-20 发布日期:2020-08-14
  • 通讯作者: 孙继颖(1972—),女,副教授,博士,博士生导师,主要从事寒旱区作物栽培及生理生态方面的研究工作。
  • 作者简介:高 鹏(1994—),男,硕士研究生,研究方向为玉米种质资源及玉米栽培生理。
  • 基金资助:
    国家重点研发计划项目(2017YFD0300802); 国家自然科学基金项目(31360304); 农业农村部华北黄土高原地区作物栽培科学观测实验站(25204120); 国家玉米产业技术体系项目(CARS-02-63); 内蒙古自治区作物栽培与遗传改良重点实验室资助项目

Effects of subsoiling on soil physical structure and maize root index in spring maize field

GAO Peng1, SUN Jiyin1, GAO Julin1, YU Xiaofang1, WANG Zhigang1, HU Shuping2, LIU Jian2, BAO Haizhu1, JI Nan1   

  1. 1. College of Agronomy,Inner Mongolia Agricultural University,Hohhot 010019,China;
    2. Vocational and Technical College,Inner Mongolia Agricultural University,Baotou 014109,China
  • Received:2020-04-15 Online:2020-06-20 Published:2020-08-14

摘要: 【目的】解决土壤板结严重、水土保持能力下降以及春玉米根系下扎困难等问题。【方法】以农户浅旋(CK)为对照,设置深松季节和深松深度两个试验因素,深松季节分为秋季深松(ASS)及春季深松(SSS)两个处理,深松深度分别是30、40、50 cm,采用裂区试验设计方法,共7个处理组合。对土壤含水量、土壤三相比,春玉米根系指标、地上部干物质量及产量等指标进行比较分析。【结果】深松ASS50处理对春玉米根系影响差异显著(P<0.05),与对照相比,该处理下根干重增加2.35 g,根长增加220.84 cm,根表面积增加0.25 m2,根体积增加37.64 cm3、产量增加18.18%。【结论】合理的深松模式可以通过提高春玉米根系能力改善生长状况。深松季节为秋季深松且深松深度为50 cm时效果最优。

关键词: 深松, 土壤三相比, 春玉米, 根系指标, 产量

Abstract: 【Objective】To solve the serious soil compaction,water conservation ability decline and roots down in spring maize.【Methods】Taking farmers′ shallow rotation as the control(CK),subsoiling season and subsoiling depth were set.The subsoiling season was divided into two treatments,autumn (ASS) and spring subsoiling (SSS),and the depth of subsoiling was 30,40 and 50 cm respectively.Crack zone test design method was adopted,and a total of 7 treatment combinations were used. Soil water content,three-phase soil comparison,maize root index,overground dry matter quality and spring maize yield were compared and analyzed.【Results】ASS50 treatment had significant difference on spring maize root (P<0.05).Compared with the CK,the root dry weight under this treatment increased by 2.35 g,the root length increased by 220.84 cm,the root surface area increased 0.25 m2,the root volume increased 37.64 cm3,and the yield increased 18.18%.【Conclusion】A reasonable subsoiling pattern could improve the growth status of maize by improving its root capacity.When the depth of subsoiling is 50 cm in autumn,the effect is the best.

Key words: Subsoiling, Three-phase soil comparison, Spring maize, Root index, Yield

中图分类号: 

  • S513