| 氮钾配施对芋头产量和品质的影响 |
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| 引用本文： | 宋春凤,徐坤. 氮钾配施对芋头产量和品质的影响[J]. 植物营养与肥料学报, 2004, 10(2): 167-170. DOI: 10.11674/zwyf.2004.0211 |
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| 作者姓名： | 宋春凤 徐坤 |
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| 作者单位： | 1.山东农业大学园艺学院 山东泰安271018 |
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| 摘 要： | 采用二次饱和D-最优设计,研究了氮钾肥配施对芋头产量和品质的影响,并建立了以氮、钾肥施用量为变量因子,芋头产量和品质为目标函数的二元二次数学模型。模型解析表明,氮、钾肥对芋头产量和品质均有显著影响,且钾肥的影响大于氮肥;氮、钾肥之间存在显著的交互效应。在氮(N)、钾(K2O)施用量分别为261.75kg/hm2、757.50kg/hm2以内,产量随施肥量的增加逐渐提高,超过此施用量,则产量下降。在本试验条件下,施肥量为N34.5～531.0kg/hm2,K2O.526.8～1057.2kg/hm2,芋头产量可达30000kg/hm2以上。
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| 关 键 词： | 芋头 氮 钾 产量 品质 |
| 文章编号： | 1008-505X(2004)02-0167-04 |
| 修稿时间： | 2003-03-05 |
Effect of nitrogen and potassium on yield and quality of taro |
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| SONG Chun-feng,XU Kun. Effect of nitrogen and potassium on yield and quality of taro[J]. Plant Nutrition and Fertilizer Science, 2004, 10(2): 167-170. DOI: 10.11674/zwyf.2004.0211 |
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| Authors: | SONG Chun-feng XU Kun |
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| Affiliation: | 1.Horticultural Department;Shandong Agricultural University;Taian 271018;China |
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| Abstract: | The effects of nitrogen and potassium on yield and qualities of taro were studied with the design of double saturated D-optimal regression. According to the data obtained, a mathematical model was established; in which N and K applied were independent variables, taro yield and quality were dependent variables. The models analysis showed that taro yield and qualities were influenced largely by nitrogen, potassium and their interaction; and potassium had heavier effect than nitrogen. Within the extent of N 261.75kg/hm2、K2O 757.50kg/hm2, yield increased with the increase of fertilizer, over-rate the yield decreased. The most suitable amounts of fertilizer for over 30000 kg/hm2 yield of taro were N 34.50～531.00(kg/hm2), K2O 526.80～1057.20kg/hm2 under this experimental conditions. |
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| Keywords: | taro (Colocasia esculenta) fertilization nitrogen potassium yield quality |
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