BO Ying-sheng,ZHAI Mei-zhi,MAO Fu-chun,et al.Preliminary Study on the Growth Rhythm Logistic Model of ‘Xilin No.3’ Walnut[J].Northern Horticulture,2012,36(04):25-27.
“西林3号”核桃果实生长规律Logistic模型研究
- Title:
- Preliminary Study on the Growth Rhythm Logistic Model of ‘Xilin No.3’ Walnut
- 文章编号:
- 1001-0009(2012)04-0025-03
- 关键词:
- “西林3号”核桃; 果实; 生长规律; Logistic模型
- Keywords:
- ‘Xilin No.3’ walnut; fruit; the growth rhythm; Logistic model
- 分类号:
- S 664.1
- 文献标志码:
- A
- 摘要:
- 以西北农林科技大学核桃板栗试验示范站栽培的“西林3号”核桃为材料,通过物候观测和果实生长动态测定，采用Logistic 曲线对其果实生长动态测定值进行了拟合，并计算出果实生长的各个时间段。结果表明：“西林3号”核桃果实纵径、横径及线径生长量与其生长时间的关系均与Logistic模型高度吻合，确定系数R2分别为因变量的99.38%、99.42%和99.05%，回归方程统计检验均达极显著水平；果实纵径、横径及线径生长过程可划分为生长初期、快速生长期和稳定生长期3个阶段，为确定不同阶段核桃栽培管理措施提供了参考依据。
- Abstract:
- With ‘Xilin No.3’ walnut as experimental material,which was planted in Walnut and Chestnut Experiment Station of Northwest Agriculture and Forestry University.Through phonological observation and growth dynamic determination of fruits,the growth dynamic measurements were fitted by Logistic Model,and each growth period of fruits was calculated.The results showed that the relationships between the increments and the growth times of the longitudinal diameter,transverse diameter and side diameter of ‘Xilin No.3’ walnut fruit were highly consistent with the Logistic Model,the coefficient of determination R2 were 99.38%,99.42% and 99.05% of the dependent variable,and the statistical test of regression equation reaches significant level；the growth process of fruit longitudinal diameter,transverse diameter and side diameter could be divided into three periods：initial-growth period,fast-growth period and stable-growth period,which provided a reference for determining the different periods of walnut cultivation and management measures.
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备注/Memo
第一作者简介：薄颖生（1958-），男，陕西户县人，本科，高级工程师，现主要从事核桃栽培技术研究与推广工作。E-mail：lxybys@ nwsuaf.edu.cn。
责任作者:翟梅枝（1963-），女，河南西平人，博士，教授，现主要从事核桃良种选育和栽培研究工作。E-mail：plum-zhai@163.com。
基金项目：财政部大学推广模式专项资助项目（XTG2007-09）。
收稿日期：2011-12-13