|本期目录/Table of Contents|

[1]刘学彤,郑春莲,曹彩云,等.长期秸秆还田对潮土水稳性团聚体的影响[J].江苏农业科学,2021,49(24):215-220.
 Liu Xuetong,et al.Effects of long-term straw returning on water-stable aggregates in fluvo-aquic soil[J].Jiangsu Agricultural Sciences,2021,49(24):215-220.
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长期秸秆还田对潮土水稳性团聚体的影响(PDF)
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第49卷
期数:
2021年第24期
页码:
215-220
栏目:
资源与环境
出版日期:
2021-12-20

文章信息/Info

Title:
Effects of long-term straw returning on water-stable aggregates in fluvo-aquic soil
作者:
刘学彤1 郑春莲1 曹彩云12 党红凯1 马俊永12 李科江12
1.河北省农林科学院旱作农业研究所,河北衡水 053000; 2.河北省农作物抗旱研究重点试验室,河北衡水 053000
Author(s):
Liu Xuetonget al
关键词:
秸秆还田潮土水稳性团聚体MWDGWD
Keywords:
-
分类号:
S153.6
DOI:
-
文献标志码:
A
摘要:
为探究潮土区长期秸秆还田土壤水稳性团聚体的分布及稳定性,以河北省低平原潮土区小麦-玉米轮作系统为研究对象,利用38年化肥与秸秆配施长期定位试验,研究了不施肥(CK)和等量氮、磷肥用量为0 kg/hm2(S0)、2 250 kg/hm2(S1)、4 500 kg/hm2(S2)和9 000 kg/hm2(S3)下的秸秆还田量、土壤团聚体分布特征及其稳定性。结果表明,与CK相比,长期施肥与秸秆还田可以降低耕层土壤容重与pH值,而对土壤颗粒组成没有显著影响。试验区土壤水稳性团聚体主要集中在>0.250 mm粒径中,在0~10 cm土层,S1、S2、S3秸秆还田处理土壤>0.250 mm团聚体含量均显著高于S0无秸秆处理,微团聚体(0.053~0.250 mm粒径)含量显著小于S0处理,<0.053 mm团聚体含量无显著差异,秸秆还田使表层土壤微团聚体向大团聚体团聚,增加了大团聚体含量。长期施肥与秸秆还田可以增加 0~10 cm土层的平均重量直径(MWD)和几何平均直径(GMD),提高表层土壤有机碳含量;多元回归方程表明,0~10 cm 土层土壤有机碳含量与MWD值极显著相关。秸秆还田可以增强表层土壤团聚体稳定性,改善土壤结构。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2021-03-25
基金项目:河北省农林科学院创新工程项目(编号:2021-4-6-3);河北省现代农业产业技术体系小麦产业创新团队项目;河北省重点研发计划(编号:19226438D)。
作者简介:刘学彤(1991—),女,河北平山人,硕士,助理研究员,研究方向为作物养分资源管理与土壤肥力培育。E-mail:liuxuetong349@163.com。
通信作者:李科江,硕士,研究员,研究方向为农田节水技术研究。E-mail:nkylkj@126.com。
更新日期/Last Update: 2021-12-20