| 包膜控释尿素对寒地水稻产量与氮肥利用率的影响 |
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| 引用本文： | 刘忠新,孙磊,吴英,刘玉林. 包膜控释尿素对寒地水稻产量与氮肥利用率的影响[J]. 北方水稻, 2009, 39(5): 10-12,15 |
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| 作者姓名： | 刘忠新 孙磊 吴英 刘玉林 |
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| 作者单位： | 绥棱县农业技术推广中心,黑龙江,绥化,152200;黑龙江省农业科学院,土壤肥料研究所,哈尔滨,150086 |
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| 基金项目： | 国家十一五科技支撑计划项目,《控释肥料关键技术集成及产业化》的部分内容 |
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| 摘 要： | 通过2 a田间试验(第二年定位试验),探讨包膜控释尿素(CRU)和普通尿素(PU)不同掺混比例对寒地水稻产量和氮肥利用率的影响。结果表明:与等量养分普通尿素比较,包膜控释尿素可促进水稻分蘖,增加水稻成穗率,产量提高6.0%～31.2%,氮肥利用率提高20.3%～96.5%,搭配比例以控释尿素占总氮量的30%～70%为好。单独施用控释尿素,后效作用不明显。
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| 关 键 词： | 寒地水稻 产量 定位试验 控释肥 氮肥 氮素 肥料利用率 |
Effect of Coated Controlled Released Urea in Yield and Nitrogen Utilization Efficiency of Rice in Cold Region |
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| LIU Zhong-xin,SUN Lei,WU Ying,LIU Yu-lin. Effect of Coated Controlled Released Urea in Yield and Nitrogen Utilization Efficiency of Rice in Cold Region[J]. North Rice, 2009, 39(5): 10-12,15 |
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| Authors: | LIU Zhong-xin SUN Lei WU Ying LIU Yu-lin |
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| Abstract: | A two-year experiment(site-specific in the second year) was conducted to study the effect of blending portions of coated controlled released urea and popular urea on the yield and nitrogen utilization efficiency of rice in cold region.The results showed that compared with equal amount of popular urea,controlled released urea was able to accelerate tillers enhance effective panicle rate,increase yield by 6.0%~31.2% and nitrogen utilization efficiency by 20.3%~96.5%.The ideal portion of controlled released urea in total nitrogen was 30%~70%.The only use of urea had no significant effect at latter growth stage. |
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| Keywords: | Rice in cold region Yield Site-specific experiment Controlled released fertilizer Nitrogen fertilizer Nitrogen Fertilizer utilization efficiency |
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