谢恒星,蔡焕杰,张振华,王加蓬.基于主成分分析法的温室甜瓜生长方程研究[J].干旱地区农业研究,2009,27(6):134~138
基于主成分分析法的温室甜瓜生长方程研究
Research on muskmelon growth formula in greenhouse based on principal component analysis
  
DOI：10.7606/j.issn.1000-7601.2009.06.26
中文关键词:  甜瓜  主成分分析  生长发育方程模型  综合植株性状  拟合精度
英文关键词:muskmelon  principal component analysis  plant development formula model  comprehensive plant characteristic  fitted precision
基金项目:国家自然科学基金项目(50779059,50609022)
作者单位
谢恒星 State Key Laboratory for Agricultural Soil and Water Engineering of Ministry of Education Northwest A＆F University， Yangling， Shaanxi 712100， China 
蔡焕杰 State Key Laboratory for Agricultural Soil and Water Engineering of Ministry of Education Northwest A＆F University， Yangling， Shaanxi 712100， China 
张振华 College of Geography and Planning Ludong University， Yantai， Shandong 264025， China 
王加蓬 State Key Laboratory for Agricultural Soil and Water Engineering of Ministry of Education Northwest A＆F University， Yangling， Shaanxi 712100， China 
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中文摘要:
      利用主成分分析法拟合了不同水分下限控制条件下温室甜瓜生长过程,并对该方法的通用性进行了验证。研究表明,利用表征作物长势的综合植株性状与有效积温建立Logstic经验模型,模型的决定系数均在0.9以上,模型的拟合精度较高。利用该模型拟合第3试验小区的甜瓜生长状况,观测值与拟合值的相对误差大部分处于10%之内。主成分分析既充分保留原始变量的信息量,又剔除了原变量之间的信息重叠部分,该方法在作物生长方程模拟中具有很好的实用性。
英文摘要:
      The development process of muskmelon in greenhouse with different water supply was simulated by principal component analysis,and the universal application of the model was tested.The results showed that the logistic model constructed with the comprehensive plant characteristics and effective accumulative temperature had very high precision with the determining coefficient above 0.9.The plant development process in the 3rd trial district was simulated with the model,and the relative error between measured value and fitted value was mostly among 10%.The principal component analysis model had pretty practicality in plant development process simulation with initial information existed fully,and repetition information deleted.
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