A Computer Program for Automatic Watering Based on Potential Evapotranspiration by Penman Method and Predicted Leaf Area in Miniature Pot Rose Production

作     者：YU Wen-jin Kitamura Ryo Kato Katsuhiko LI Lian-hua Fukui Hirokazu 

作者机构：Agricultural College Guangxi University Nanning 530004 P.R.China The United Graduate School of Agricultural Science Gifu University Gifu 5011193 Japan Faculty of Applied Biological Sciences Gifu University Gifu 5011193 Japan Gifu Prefectural Center for Agricultural Sciences Gifu 5011152 Japan 

出 版 物：《Agricultural Sciences in China》 (中国农业科学（英文版）)

年 卷 期：2010年第9卷第3期

页      面：370-377页

核心收录：

学科分类：090706[农学-园林植物与观赏园艺] 0907[农学-林学] 0839[工学-网络空间安全] 08[工学] 09[农学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the Science Founda-tion of Guangxi Zhuang Autonomous Region  China(0832002) 

主　　题：automatic watering leaf area miniature pot rose Penman Method program 

摘      要：In this study, we developed a computer program for automatic prediction of watering time point by considering the environmental factors such as solar radiation, air temperature and relative humidity based on the multiple linear regression equation of leaf area and Penman Method. The experiments were carried out for a year in two watering experimental plots, one of which was controlled by pF value, and the other by the computer program. After comparing the results of the two plots, the following findings were obtained. In the computer program plot, the observed and predicted values of both leaf area and evapotranspiration indicated significant correlation at the 1% level, which suggested that the computer program had high prediction accuracy. In addition, no significant difference was observed between the two experimental plots with respects to the plant height, plant diameter, leaf area, leaf number, fresh weight, and dry weight, which demonstrated that the plants in the computer program plot had normal growth. On the other hand, although the number of flower buds and flowering shoots showed higher values at the end of certain cultivations in the computer program plot than those in pF value plot, we proposed that it was due to the effect of cumulative daily solar radiation in the greenhouse, rather than the watering. Thus, we have reached the conclusion that the computer program for automatic prediction of watering time point developed by this study has high applicability in miniature pot rose production.