|
|||||
|
|
| 马铃薯氮素吸收积累特性与施用技术研究 | |
| 引用本文： | 林永忠,李小萍,姜照伟,翁定河. 马铃薯氮素吸收积累特性与施用技术研究[J]. 福建农业学报, 2012, 27(7): 679-684 |
| 作者姓名： | 林永忠 李小萍 姜照伟 翁定河 |
| 作者单位： | 1. 福建省漳州市农业技术推广站,福建漳州,363000 2. 福建省农业科学院水稻研究所,福建福州,350019 3. 福建省种植业技术推广总站,福建福州,350003 |
| 基金项目： | 福建省科技计划重点项目，福建省财政专项——福建省农业科学院科技创新团队建设项目 |
| 摘 要： | 为探索马铃薯氮素吸收积累特性与施用技术,在闽东南冬种马铃薯区设置不同施氮水平的田间试验。结果表明,马铃薯全株及块茎的N素积累呈Logistic曲线动态,茎叶干物质积累和叶面积发展动态呈单峰曲线,马铃薯产量、块茎干物质和淀粉积累量均与施N量呈抛物线型相关。在供试条件下,马铃薯目标产量38t.hm-2,平均每生产1 000kg鲜薯的吸N量为3.31kg,需施N5.91kg,达到最佳经济效益的经济施N量为239.5kg.hm-2。 |
| 关 键 词： | 马铃薯 氮素 产量 叶面积 干物质 淀粉 |
Nitrogen Absorption and Accumulation and Fertilization of Potatoes |
|
| LIN Yong-zhong , LI Xiao-ping , JIANG Zhao-wei , WENG Ding-he. Nitrogen Absorption and Accumulation and Fertilization of Potatoes[J]. Fujian Journal of Agricultural Sciences, 2012, 27(7): 679-684 | |
| Authors: | LIN Yong-zhong LI Xiao-ping JIANG Zhao-wei WENG Ding-he |
| Affiliation: | 1.Agricultural Technology Extension Station of Zhangzhou City,Zhangzhou,Fujian 363000,China; 2.Rice Research Institute,Fujian Academy of Agricultural Sciences,Fuzhou,Fujian 350019,China; 3.Agricultural Technology Extension General Station,Fujian Province Department of Agriculture, Fuzhou,Fujian 350001,China) |
| Abstract: | Different nitrogen(N) application levels in the winter potato areas in the Southeast Fujian were conducted to explore the characteristics of N absorbtion and accumulation as well as application technology.The results showed that N accumulation in the whole plant and tuber of the potatoes both exhibited a Logistic dynamic curve.The dynamics of leaf area and dry matter accumulation in stems and leaves all showed a single peak curve.The yield,dry matter and starch accumulation of tuber in potatoes all had parabola correlation with N application.Under the tested conditions,the economic N application was determined to be 239.5 kg·hm-2 with an expected yield of 38 t·hm-2.On the average,N absorption and application were 3.31 kg and 5.91 kg for fresh potatoes per 1 000 kg,respectively. |
| Keywords: | Potato nitrogen yield leaf area dry matter starch |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |