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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (15): 174-177.

所属专题： 水稻

• 农学 农业基础科学 • 上一篇    下一篇

不同类型缓释氮肥对水稻产量和氮肥利用率的影响

胡春花 罗革彬 曾建华 潘孝忠   

  • 收稿日期:2011-02-15 修回日期:2011-03-30 出版日期:2011-06-25 发布日期:2011-06-25

Influence of Different Types of Slow-release Nitrogen Fertilizer on Rice Yield and Nitrogen Fertilizer Use Efficiency

  • Received:2011-02-15 Revised:2011-03-30 Online:2011-06-25 Published:2011-06-25

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摘要：

应用几种缓释氮肥在水稻上进行田间试验，研究其对水稻产量和氮肥利用率的影响。结果表明，在海南中等肥力的土壤上，富岛树脂包膜缓释尿素(CRU5)的产量和氮肥利用率最高，但水稻生长后期出现贪青晚熟和倒伏现象，其氮素释放慢，更适合在生育期长的作物上施用。富岛脲甲醛缓释肥料（UF1）和富岛水溶性聚合物包膜缓释尿素（CRU4）比小颗粒尿素增产10.47%，氮肥利用率提高6.67%~15.12%，其成熟期适中，后期叶青杆壮，适合在水稻上施用。大颗粒尿素比小颗粒尿素增产4.58%，氮肥利用率提高6.67%，因其价格较低，可取代小颗粒尿素在水稻上推广。

关键词: 幂函数, 幂函数

Abstract:

This paper studied the influence of several slow-release nitrogen fertilizer to rice yield and nitrogen fertilizer use efficiency through rice field experiment. The results showed that of Fudao slow-release Urea Coated by resin (CRU5) had highest yield and nitrogen fertilizer use efficiency in Hainan moderate fertility soils, but in late growth period appeared the phenomenon of late maturity and lodging, its nitrogen release slow, application more suitable for long growth varieties. The yield of Urea-formaldehyde slow release fertilizers (UF1) and Fudao Slow-release Urea Coated by Water-Soluble Polymer (CRU4) higher 10.47% than small particles urea, nitrogen fertilizer use efficiency increased by 6.67%-15.12%, its maturity moderate, leaves green and stem strong in late period, suitable for application. The yield of large particles urea higher 4.58% than small particles urea, nitrogen fertilizer use efficiency increased by 6.67%, and because of its low price, which could replace small particles urea and extension in rice production.

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