粉煤灰包膜缓释肥养分释放特征分析
Journal of Hebei Normal University of Science & Technology（2013）
Abstract
通过室内恒温土柱淋洗试验,研究了包膜在肥料中的质量分数分别为0.05,0.10和0.15时的3种缓释肥料养分释放规律。结果表明,28 d以后,粉煤灰包膜肥淋溶液NH+4-N和NO-3-N均高于普通复合肥处理;3种自制粉煤灰包膜肥料能降低氮、磷和钾素累计淋出率,且厚度越大效果越好。
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Key words
fly ash,nutrients release characteristics,coated slow-release fertilizers
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