| 果树生产技术经济效益评价的两个问题——育苗的经济效益和栽植密度与产量的关系 |
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| 引用本文： | 王有年,姚允聪,沈瑞骞,李金光.果树生产技术经济效益评价的两个问题——育苗的经济效益和栽植密度与产量的关系[J].北京农学院学报,1992(2). |
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| 作者姓名： | 王有年 姚允聪 沈瑞骞 李金光 |
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| 作者单位： | 北京农学院园艺系，北京农学院园艺系，北京农学院园艺系，北京农学院园艺系 |
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| 摘 要： | 本文用对比分析法研究了薄膜与露地育苗的经济效益,同时通过实例确定了苹果栽培密度与产量的关系:Y=ax~2+bx+c。介绍了研究这种关系的方法,编制了两个问题研究时实施计算的BASIC程序。
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| 关 键 词： | 苹果 育苗 栽植密度 产量 |
THE TWO RESPECTS OF THE EVOLUATION OF RESULTOF POMOLOGICAL CULTURAL TECHNOLOGIES-The economic result of methods of raising seedlings and the ralations of production and density of appie tree. |
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| Wang Younian.THE TWO RESPECTS OF THE EVOLUATION OF RESULTOF POMOLOGICAL CULTURAL TECHNOLOGIES-The economic result of methods of raising seedlings and the ralations of production and density of appie tree.[J].Journal of Beijing Agricultural College,1992(2). |
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| Authors: | Wang Younian |
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| Institution: | Wang Younian |
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| Abstract: | In this paper, comparsive analysis were made on two methods of ofraising seed-
lings from economic results to cultured density of oftrees were metabolished as a model:
Y=ax2+bx+c the results obtainsfrom a BASIC programme at PC-386 computer. |
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| Keywords: | apple raising seedlings cultured density production |
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