|本期目录/Table of Contents|

[1]王晓军,孙玉琴,王勇,等.长期定位施肥对旱作土壤团聚体及养分的影响[J].江苏农业科学,2019,47(17):276-280.
 Wang Xiaojun,et al.Impacts of long-term fertilization on dry land soil aggregate and nutrients[J].Jiangsu Agricultural Sciences,2019,47(17):276-280.
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长期定位施肥对旱作土壤团聚体及养分的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第47卷
期数:
2019年第17期
页码:
276-280
栏目:
资源与环境
出版日期:
2019-09-29

文章信息/Info

Title:
Impacts of long-term fertilization on dry land soil aggregate and nutrients
作者:
王晓军 孙玉琴 王勇 张晓娟 张尚沛 杨军学 罗世武 程炳文
宁夏农林科学院固原分院,宁夏固原 756000
Author(s):
Wang Xiaojunet al
关键词:
定位施肥团聚体养分有机质旱作
Keywords:
-
分类号:
S158
DOI:
-
文献标志码:
A
摘要:
为准确掌握宁南山区旱作土壤团聚体和养分含量的变化趋势,为当地旱作农田生产施肥管理提供理论依据。通过5年长期定位施肥试验,选择谷子连作施肥的5个处理,分析对比不同施肥处理下土壤养分含量、有机质含量、水稳性团聚体与施肥量的关系。结果表明,0~20 cm土层中,施肥处理土壤有机质含量明显高于不施肥处理。>3 mm水稳性团聚体含量随着施肥水平的提高总体呈缓慢升高的趋势;不同生育期土壤中碱解氮含量呈现出“S”形曲线变化,不同生育期土壤中速效磷含量变化呈现出双峰值(“M”形)曲线。同一处理不同生育期土壤中速效钾含量变化差异显著(P<0.05),随着生育期的变化,速效钾含量呈现出“降低—升高—降低—升高”的趋势。经过5年长期试验,各年份土壤团聚体含量、土壤有机质含量随着施肥水平的增加而有所升高,土壤碱解氮、速效磷、速效钾含量均在不同生育期出现先升高后降低的趋势,表明长期施肥对于维持土壤肥力、调节土壤团聚体各级比例具有重要意义。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2018-04-28
基金项目:国家谷子高粱产业技术体系建设专项(编号:CARS-06-13.5-A15)。
作者简介:王晓军(1983—),男,宁夏西吉人,硕士,助理研究员,主要从事植物营养与测土配方施肥研究。E-mail:1449820235@qq.com。
通信作者:程炳文,研究员,主要从事谷子糜子土壤与肥料研究。E-mail:792483123@qq.com。
更新日期/Last Update: 2019-09-05