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天然木粉在包裹控释尿素上的应用
Authors
崔智多
张小勇
王恩飞
莫海涛
Publication date
1 January 2012
Publisher
Abstract
为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,研究了3种天然木粉包裹控释尿素(CRU20、CRU25、CRU30)在常温条件下的养分释放规律,以及不同温度、pH值和水肥比对控释尿素养分释放规律的影响。结果表明:1)包裹控释尿素的缓释期随着包裹量的增大而变长,CRU20、CRU25、CRU30的理论缓释期分别为36、54,121d,不同的包裹量表现出不同的释放曲线模式。2)氮素释放速率受温度和pH值的影响较大,不同水肥比的差异不明显。3)包裹控释尿素释放机理为"崩溃"机制。天然木粉包裹控释尿素具有很好的推广应用价值
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Institutional Repository of Institute of Process Engineering, CAS (IPE-IR)
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Last time updated on 11/04/2021