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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:

第46卷

期数:

2018年第1期

页码:

228-233

栏目:

资源与环境

出版日期:

2018-01-05

文章信息/Info

Title:

Impact of different fertilization treatments on soil dissolved organic matter in spring corn field

作者:

赵海超;  黄智鸿;  罗永华;  田再民

河北北方学院，河北张家口 075000

Author(s):

Zhao Haichao; et al

关键词:

施肥; 土壤; 溶解性有机质; 产量; 玉米

Keywords:

-

分类号:

S513.06

DOI:

-

文献标志码:

A

摘要:

选取冀北旱作区春玉米(Zea mays ssp. mays L.)农田土壤为研究对象，通过连续4年进行不同施肥处理田间定位试验，采用三维荧光光谱法分析不同层次土壤溶解性有机质组分含量，研究施肥对农田土壤溶解性有机质组分［溶解性有机质（DOM）、溶解性有机碳（DOC）、溶解性有机氮（DON）、溶解性有机磷（DOP）］的影响，以揭示土壤DOM及其组分对玉米产量及土壤肥力效应。结果表明，各处理0~40 cm 土壤DOM的∑F_ex/em在46.04~78.24之间，DOC含量在101.24~253.48 mg/kg之间，DON含量在26.81~54.87 mg/kg 之间，DOP含量在26.81~54.87 mg/kg之间。施用有机肥能够增加土壤DOM、DOC含量，有机肥和无机肥配施能够增加土壤DOC、DOP含量，降低DOM的∑F_ex/em值，配施氮肥和磷肥分别增加土壤DON和DOP含量，无机肥配施有利于增加土壤DOM的∑F_ex/em值，施肥降低了土壤DON和DOP含量。土壤中DOM和DOC主要来自外源，DON和DOP主要来自内源，土壤微生物和玉米生长对土壤DOM和DOP的影响具有多重性，影响较小，随着土壤微生物活性的增加和玉米产量的提高，土壤DOC含量增加、DON含量降低，DOC具有土壤肥力和玉米产量的指示效应。

Abstract:

-

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备注/Memo

备注/Memo:

收稿日期：2016-07-27
基金项目：河北省科学技术厅项目(编号：15226423、13226402D)。
作者简介：赵海超(1974—)，男，内蒙古赤峰人，博士，副教授，主要从事作物栽培学与耕作学研究。E-mail：haichaozhao19@163.com。

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更新日期/Last Update: 2018-01-05