| 汪立梅，陈 娴，钟秀娟，等.3 种不同有机质包膜尿素的养分释放特征及肥效[J].广东农业科学,2015,42(11):71-76 |
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3 种不同有机质包膜尿素的养分释放特征及肥效 |
| Nutrient release characteristics and fertilizer efficiencies of three kinds of organic coated urea |
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| DOI： |
| 中文关键词: 有机质 包膜尿素 养分释放 肥效 |
| 英文关键词: organic matter coated urea nutrient release fertilizer efficiency |
| 基金项目: |
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| 摘要点击次数: 1418 |
| 全文下载次数: 607 |
| 中文摘要: |
| ：以3 种有机质作为主要包膜材料制得3 种包膜（腐殖酸包膜、花生麸包膜、生物碳包膜）尿素，采用
25℃静水连续溶出试验检测其养分释放特性，通过玉米盆栽试验和水稻大田试验，对3 种有机质包膜尿素的肥效
和氮肥利用率进行研究。溶出试验结果表明：3 种有机质包膜尿素具有良好的缓释效果，其中生物碳包膜尿素达
到缓释肥料标准（GB/T23348-2009）要求。玉米盆栽试验结果显示，与等氮施肥的普通尿素相比，3 种有机质包膜
尿素对盆栽玉米生物量的增产效果显著，分别达32.96%、25.38%、24.10%；氮肥利用率分别达到77.21%、76.16%
和57.67%，比普通尿素提高2 倍以上；其收获后土壤残留的矿质态氮含量也有所增加。水稻大田小区试验结果表
明：以腐殖酸包膜尿素配制的2 种缓释BB 肥均能促进水稻生长，稻穗长和稻谷千粒重增加，稻谷单产分别增加
20.5% 和23.1%，达到显著水平。 |
| 英文摘要: |
| In this paper，three kinds of coated urea（humic acid coated urea，peanut bran coated urea，biocharcoated urea）were made by different organic materials. A continuous dissolution test was carried out to determine theirnutrient release characteristics，maize pot experiment and rice field experiment were conducted to investigate theirfertilizer efficiencies and nitrogen use efficiencies. The results showed that the slow release effects of the three kinds oforganic coated urea were good，and the biochar coated urea reached the requirements of slow-release fertilizer standard（GB/T23348-2009）. The pot experiment results showed that，compared with the common urea，three kinds of organiccoated urea could make the yield of maize increased by 32.96%，25.38%，24.10% respectively；the N-use efficiencieswere 77.21%，76.16%，57.67% respectively，over twice than that of the common urea；the remained mineralized N in soilafter reaping the maize increased. The rice field plot experiment results showed that two kinds of BB fertilizer which weremade by the humic acid coated urea significantly promoted rice growth，increased panicle length and thousand-grainweight. The yield per 667 m2 increased by 20.5% and 23.1% respectively，reached significant level. |
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