| 两种包膜尿素的氮释放特性及对高羊茅生长的影响 |
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| 引用本文： | 沙之敏,边秀举,艾文静,武良,杨丽丽.两种包膜尿素的氮释放特性及对高羊茅生长的影响[J].北方园艺,2009(8). |
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| 作者姓名： | 沙之敏 边秀举 艾文静 武良 杨丽丽 |
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| 作者单位： | 河北农业大学,园林与旅游学院,河北,保定,071001;三河市环境保护局,河北,廊坊,065200 |
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| 基金项目： | 中加合作项目(IPNI)平衡施肥示范计划资助项目 |
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| 摘 要： | 采用水浸泡法对2种包膜尿素(CU-1和CU-2)的初期溶出率和微分溶出率进行测定。2种包膜尿素的初期溶出率分别为9.5%和1.36%,符合国际上公认的缓/控释肥的初期溶出率小于15%的指标,而微分溶出率分别为2.48%和1.72%,也符合国际上公认的缓/控释肥的微分溶出率(0.25%~2.5%)的指标。通过盆栽试验研究了普通尿素(S1)、包膜尿素(H1和H2)以及二者配比(F1、F2、F3和F4)对高羊茅建植期生长的影响。结果表明:单一施用CU-2处理以及CU-2配施50%普通尿素处理明显促进了高羊茅地上部与地下部生物量的积累,促进了高羊茅对氮的吸收,尤其是生长后期,叶片中氮含量显著高于尿素与空白处理。另外,包膜尿素的应用减小了草坪生长速率的波动。
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| 关 键 词： | 包膜尿素 高羊茅 建植期 氮素释放速率 |
Nitrogen Release Characteristics of Two Coated Urea and Their Effects on Growth of Tall Fescue Turfgrass |
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| SHA Zhi-min,BIAN Xiu-ju,AI Wen-jing,WU Liang,YANG Li-li.Nitrogen Release Characteristics of Two Coated Urea and Their Effects on Growth of Tall Fescue Turfgrass[J].Northern Horticulture,2009(8). |
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| Authors: | SHA Zhi-min BIAN Xiu-ju AI Wen-jing WU Liang YANG Li-li |
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| Institution: | 1.College of Landscape Architecture and Tourism of Hebei Agricultural University;Baoding;Hebei 071001;China;2.Sanhe Municipal Environmental Protection Bureau;Langfang;Hebei 065200;China |
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| Abstract: | The dissolution rates of two kinds of coated urea(CU-1 and CU-2) were tested.Preliminary solubility of coated urea were 9.5% and 1.36% respectively,which could meet international accepted index(<15%);whereas its differential solubility(2.48% and 1.72%) were in good agreement with international accepted index(0.25%~2.5%).A pot experiment was conducted to study the effect of urea(S1),coated urea(H1 and H2) and their combinations treatments(F1,F2,F3 and F4) on the planting stages of Tall fescue.The results sho... |
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| Keywords: | Coated urea Tall fescue Planting stages N release rate |
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