福建省农业科学院机构知识库

Effects of (15)Nitrogen-Labeled Gel-Based Controlled-Release Fertilizer on Dry-Matter Accumulation and the Nutrient-Uptake Efficiency of Corn

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文献类型：外文期刊

作者： Ding, Hong ¹ ; Zhang, Yushu ¹ ; Qin, Shengjin ¹ ; Li, Weihua ¹ ; Li, Shiqing ² ;

作者机构： 1.Fujian Acad Agr Sci, Inst Soil & Fertilizer, Fuzhou 350013, Peoples R China

2.Chinese Acad Sci, Inst Water & Soil Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling, Shanxi, Peoples R China

3.Minist Water Resources, Yangling, Shanxi, Peoples R China

关键词： Corn growth;gel-based CRF;N-15 tracer;nutrient-uptake efficiency

期刊名称：COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS （影响因子：1.327；五年影响因子：1.315 ）

ISSN： 0010-3624

年卷期： 2011 年 42 卷 13 期

页码：

收录情况： SCI

摘要： Effects of a new gel-based controlled-release fertilizer (G-CRF) on the growth and nutrient uptake efficiency of corn were investigated based on a pot experiment. The fate of fertilizer nitrogen (N) was also studied by N-15 tracer method. The results showed that, compared with conventional fertilizer, the G-CRF had significant effects on increasing dry matter, N, phosphorus (P), and potassium (K) accumulations, which increased by 6.4% (P < 0.05), 14.2% (P < 0.01), 8.0% (P < 0.01), and 6.0% (P < 0.05), respectively, in the mature stage. The N-15 tracer experiment showed N-uptake efficiency in G-CRF treatment increased by 8.0% and loss rate decreased by 8.9% compared with conventional fertilizer treatment. Application of G-CRF improved P and K uptake efficiency by 5.8 and 11.6 percentage points in the mature stage. Thus, the results implied the G-CRF tested could provide essential plant nutrients including N, P, and K and delay the release of them efficiently. Moreover, G-CRF had significant effects on improving nutrient-uptake efficiencies and plant yield.

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