引用本文:[点击复制]
[点击复制]
【打印本页】 【在线阅读全文】【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览 130次   下载 104 本文二维码信息
码上扫一扫!
不同耕作模式下秸秆还田对潮土肥力特征的影响
黄界颍,阮仁杰,王擎运,郜红建,周林,王慧,于正国,李宗壕,严景,伍震威,单平
0
(农田生态保育与污染防控安徽省重点实验室,安徽农业大学资源与环境学院,合肥 230036;界首市农技推广中心,界首 230065;安徽省环境检测中心,合肥 230071)
摘要:
2016—2017年通过田间试验对比研究夏玉米季不同耕作模式下秸秆还田对潮土肥力特征的影响。试验设置:免耕(NT)、免耕(NT)+秸秆还田(S)、翻耕(T)和翻耕(T)+秸秆还田(S)4个处理。结果表明,免耕、翻耕模式下,秸秆还田均显著增加了土壤碱解氮(+6.10 mg·kg-1、+10.66 mg·kg-1)、有效磷(+2.76 mg·kg-1、+6.53 mg·kg-1)、速效钾(+38.94 mg·kg-1、+47.7 mg·kg-1)、有机质(+1.85 g·kg-1、+0.80 g·kg-1)含量,及土壤孔隙度(+2.81%、+1.77%),降低了土壤容重(-5%、-3%),促进水稳定性大团聚体(>0.25 mm)的形成。免耕、翻耕模式下的秸秆还田均有利于土壤肥力的提高,尤其在免耕模式下土壤容重、孔隙度、团聚体和有机质含量状况得到明显改善。翻耕对大团聚体有破碎作用,不利于有机质累积。
关键词:  免耕  翻耕  秸秆还田  潮土
DOI:10.13610/j.cnki.1672-352x.20180825.003
基金项目:安徽省自然科学基金项目(1708085MD89), 安徽省省级环保科研项目(2016-13), 国家级大学生创新创业项目(201710364082), 安徽农业大学校级大学生创新创业项目(XJ2016413)和国家自然科学基金项目(41701575)共同资助。
Effects of straw residue on the fertilities of fluvo-aquic soil in different farming modes
HUANG Jieying,RUAN Renjie,WANG Qingyun,GAO Hongjian,ZHOU Lin,WANG Hui,YU Zhengguo,LI Zonghao,YAN Jing,WU Zhenwei,SHAN Ping
(Anhui Province Key Lab of Farmland Ecological Conservation and Pollution Prevention,School of Resources and Environment, Anhui Agricultural University, Hefei 230036;Agricultural Technology Promotion Center of Jieshou, Jieshou 230065;Anhui Environmental Monitoring Centre, Hefei 230071)
Abstract:
To study the effect of straw returning on soil fertility in summer maize, a field experiment was conducted from 2016 to 2017. Experimental settings: no-tillage (NT), tillage (T), no-tillage (NT) + straw incorporation (S) and tillage (T) + straw returning (S), four treatments in total. The results showed that, under both modes, straw incorporation not only significantly increased the amount of available nitrogen (+6.10 mg·kg-1, +10.66 mg·kg-1), available phosphorus (+2.76 mg·kg-1, +6.53 mg·kg-1), available potassium (+38.94 mg·kg-1, +47.7 mg·kg-1), porosity (+2.81%, +1.77%) and organic matter (+1.85 g·kg-1, +0.80 g·kg-1) in the soil, but also effectively reduced the soil bulk density (-5%, -3%), Meanwhile, the formation of water-stable aggregates was promoted as well. Straw incorporation enhanced soil fertility under both modes, especially for the mode of no-tillage, soil bulk density, porosity, water-stable aggregates and organic matter contents were obviously improved in this mode, whereas tillage would crush the aggregates, which is unfavorable to the accumulation of organic matters.
Key words:  no-tillage  tillage  straw residue on soil  fluvo-aquic soil

用微信扫一扫

用微信扫一扫