摘要
以长三角地区设施火龙果为试验对象,测定软枝大红火龙果果实生长发育期间横径、纵径、鲜质量和干质量4种生长指标的动态变化。选择Logistic、Gompertz、Richards以及三次多项式4种生长方程,以生理发育时间为尺度建立果实生长发育模型,根据拟合结果确定每种指标最合适的数学模型,并用独立数据进行验证。结果表明,软枝大红果实横径和纵径的变化适合选择三次多项式方程,鲜质量和干质量的变化适合选择Logistic方程,最终得到的拟合模型R~2均大于0.98。模型的检验结果表明,横径、纵径、鲜质量和干质量的相对均方根误差(RRMSE)小于15%,模拟效果较好。以上模型对软枝大红火龙果果实生长指标的预测精度较高,可为长三角地区该品种火龙果的栽培管理提供理论依据。
The study investigated the dynamic changes in four growth parameters during fruit development of Ruanzhidahong dragon fruit grown in the Yangtze River Delta region.The growth parameters were horizontal and vertical diameter,fresh and dry weight.Four growth equations(Logistic,Gompertz,Richards,cubic polynomial)were chosen to establish fruit growth models using physiological development time(PDT)as the scale.The appropriate mathematical models for each parameter were determined based on the fitting results and validated using independent data.The results indicated that cubic polynomial was appropriate for the dynamic changes of horizontal and vertical diameters,while Logistic equation was suitable for determining the fresh and dry weights of Ruanzhidahong fruits.The R²values for all fitted models exceeded 0.98.The model’s test results indicated that the relative root mean square error(RRMSE)for horizontal and vertical diameter,fresh and dry weight was less than 15%,demonstrating a successful simulation.Therefore,the models obtained in this study demonstrate high predictive accuracy for growth parameters of Ruanzhidahong dragon fruit.They can be served as a theoretical foundation for cultivation management of this variety in the Yangtze River Delta region.
作者
宋亮
徐婷婷
卢学鹤
张海东
SONG Liang;XU Tingting;LU Xuehe;ZHANG Haidong(Suzhou Academy of Agricultural Sciences(Jiangsu Taihu Regional Agricultural Science Research Institute),Suzhou 215105,China;School of Geoscience Science and Geomatics Engineering,Suzhou University of Science and Technology,Suzhou 215000,China)
出处
《河南农业科学》
北大核心
2024年第12期174-180,共7页
Journal of Henan Agricultural Sciences
基金
苏州市农业科学院科研基金项目(22022、22023)。
关键词
火龙果
软枝大红
生长指标
模拟模型
生理发育时间
Dragon fruit
Ruanzhidahong
Growth indicators
Simulation model
Physiological development time(PDT)
作者简介
宋亮(1996-),男,江苏苏州人,研究实习员,硕士,主要从事农业信息化研究。E-mail:1610843398@qq.com。
