| 不同材料包膜尿素对玉米生长及其缓释效应的研究 |
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| 引用本文： | 王晓晶,王艳,王小波.不同材料包膜尿素对玉米生长及其缓释效应的研究[J].天津农业科学,2007,13(2):35-37. |
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| 作者姓名： | 王晓晶 王艳 王小波 |
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| 作者单位： | 1. 山西农业大学资源环境学院,山西,太谷,030801
2. 天津农学院,天津,300384 |
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| 基金项目： | 山西省科技攻关项目;天津科技攻关计划培育项目 |
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| 摘 要： | 主要通过玉米盆栽试验研究了4种多年筛选的包膜肥料对玉米的生长及其氮素释放的影响。通过测定土壤中的速效N、脲酶、玉米生物量、氮肥利用率等,对包膜肥料进行评价。CRF-16的玉米生物产量最高,比ck提高了30.67%。CRF-16N肥利用率最高,与其它包膜肥料差异显著,比ck高19.1个百分点。在玉米生长前期,包膜肥料抑制脲酶活性;到了玉米生长旺盛期,脲酶活性增加,促进了氮的释放。在玉米生长中后期,4种包膜肥料不同程度地增加了土壤碱解氮的含量,这与氮素前期抑制释放而中后期大量释放有关。
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| 关 键 词： | 包膜肥料 玉米 养分释放 利用率 |
| 文章编号： | 1006-6500（2007）02-0035-03 |
| 修稿时间： | 2007-02-10 |
Effects of Different Kinds of Coated Urea on Corn Growth and Slowed-release of N |
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| WANG Xiao-jing,WANG Yan,WANG Xiao-bo.Effects of Different Kinds of Coated Urea on Corn Growth and Slowed-release of N[J].Tianjin Agricultural Sciences,2007,13(2):35-37. |
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| Authors: | WANG Xiao-jing WANG Yan WANG Xiao-bo |
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| Institution: | 1.College of Resources and Environmental Science, Shanxi Agriculture University, Taigu, Shanxi 030801, China ; 2.Tianjin Agricultural College, Tianjin 300384, China |
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| Abstract: | Effects of four different kinds of coated urea on corn growth were studied by pot experiment.These coated fertilizers were appraised by their impact on available N,urease activities,corn biomass and nitrogen utilization.According to corn biomass,improvement of CRF-16 is remarkable with 30.67% more than that of ck.Compared with the other treatments,the N utilization of CRF-16 is the most highest.It is 19.16% more than ck.Urease activities of these four coated fertilizers kept down in prophase.In the flush period of corn,the urease activities increased.It promoted N release.Available-N of coated fertilizers increased in anaphase of corn.It related to N controlled release in the front stage and more release in the later stage. |
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| Keywords: | coated fertilizer corn nutrition release utilization rate |
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