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天然有机物包裹控释尿素的养分释放特征及其肥效研究
Authors
崔智多
张小勇
+3 more
王恩飞
莫海涛
蒋小姝
Publication date
1 January 2012
Publisher
Abstract
为了探究木质纤维素类有机物在缓/控释肥上的应用效果,采用静水浸泡法,研究3种天然木粉包裹控释尿素在常温条件下的养分释放规律,并通过盆栽试验考察包裹控释尿素在白菜上的肥效。结果表明,包裹控释尿素对氮素养分有很好的控释效果,不同的包裹量表现出不同的释放模式;缓释期随着包裹量的增加而变长;盆栽试验证明,等养分控释尿素处理(CRU1)能够促进白菜的生长,白菜产量(鲜重)和氮素利用率比普通尿素处理(CCU)分别提高17.7%、12.4%,差异显著(P<0.05);与普通尿素处理(CCU)相比,氮肥减量10%处理(CRU2)和20%处理(CRU3)的白菜产量(鲜重)差异不显著;等养分控释尿素处理(CRU1)白菜的硝酸盐含量增加不显著,施肥处理间白菜的品质没有显著差异。包裹控释尿素能够与白菜的营养需求匹配,减少对根的伤害,提高肥料利用率
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/44756
Last time updated on 11/04/2021
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/37829
Last time updated on 05/12/2019
Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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oai:ir.ipe.ac.cn:122111/10426
Last time updated on 09/11/2016