基于辐射和温度热效应的温室水果黄瓜叶面积模型

doi:10.17521/cjpe.2006.0109

植物生态学报 ›› 2006, Vol. 30 ›› Issue (5): 861-867.DOI: 10.17521/cjpe.2006.0109

基于辐射和温度热效应的温室水果黄瓜叶面积模型

李永秀¹, 罗卫红¹^,²^,^*(), 倪纪恒¹, 陈永山¹, 徐国彬¹, 金亮¹, 戴剑锋¹, 陈春宏², 卜崇兴²

1 南京农业大学农学院, 南京 210095
2 上海市农业科学院上海市设施园艺技术重点实验室, 上海 201106

收稿日期:2005-06-30 接受日期:2005-09-13 出版日期:2006-06-30 发布日期:2006-09-30
通讯作者: 罗卫红
作者简介:*E-mail: lwh@njau.edu.cn
基金资助:
国家自然科学基金项目(60073028);国家863计划项目(2001AA247023);上海市科技兴农重点攻关项目(农科字2002第3-1-1号)

SIMULATION OF GREENHOUSE CUCUMBER LEAF AREA BASED ON RADIATION AND THERMAL EFFECTIVENESS

LI Yong-Xiu¹, LUO Wei-Hong¹^,²^,^*(), NI Ji-Heng¹, CHEN Yong-Shan¹, XU Guo-Bin¹, JIN Liang¹, DAI Jian-Feng¹, CHEN Chun-Hong², BU Chong-Xing²

1 College of Agriculture, Nanjing Agricultural University, Nanjing 210095, China
2 Key Lab of Protected Horticultural Technology, Shanghai Academy of Agricultural Sciences, Shanghai 201106, China

Received:2005-06-30 Accepted:2005-09-13 Online:2006-06-30 Published:2006-09-30
Contact: LUO Wei-Hong
About author:*E-mail: lwh@njau.edu.cn

摘要/Abstract

摘要：

依据温室黄瓜(Cucumis sativus)叶片生长与温度和辐射的关系,构建了适合我国种植技术的黄瓜叶面积模拟模型,并利用不同品种、播期的试验资料对模型进行了检验。结果表明,该模型比传统的积温法和比叶面积法更准确地模拟温室水果黄瓜的叶面积。该模型对黄瓜叶面积指数的模拟结果与1∶1直线之间的决定系数R²和回归估计标准误差RMSE分别为0.879 2和0.398 0,比用积温法和比叶面积法模拟叶面积指数的精度分别提高了37%和74%。

关键词: 温室, 黄瓜, 辐热积, 叶面积指数, 模型

Abstract:

Background and Aims Leaf area index (LAI) is one of the most important crop parameters in photosynthesis driven crop growth simulation models. Temperature and radiation are important climate factors affecting crop leaf growth. The aim of this study is to quantitatively investigate the effects of both temperature and photosynthetically active radiation (PAR) on the leaf growth of greenhouse cucumber (Cucumis sativus).

Methods Experiments with different cultivars and sowing dates were conducted in greenhouses of Shanghai Academy of Agricultural Sciences during August, 2003 and July, 2004. We used the following quantitative relationships based on experimental data to model the relationship between the product of thermal effectiveness and PAR (TEP): accumulated TEP to the number of unfolding leaves per plant and the number of old leaves removed per plant, leaf position relative to the rate of increase in leaf length and the maximum leaf length; and the ratio of leaf area to leaf length. Based on these quantitative relationships, a leaf area simulation model for greenhouse cucumber was developed. Independent experimental data were used to validate the model. The simulated results of the model developed in this study were compared with those of the traditional GDD based model (which predict leaf area based on growing degree days) and SLA based model (which predict leaf area based on the specific leaf area and leaf dry weight).

Key Results The coefficient of determination (R²) and the root mean squared error (RMSE) between the simulated and the measured leaf area index (LAI) based on the 1∶1 line are 0.879 2 and 0.398 0, respectively. The prediction accuracy of this model is 37% and 74% higher, respectively, than that of the traditionalGDD and SLA based models.

Conclusions The model developed in this study can predict LAI satisfactorily using air temperature, radiation, date of the first leaf unfolding and planting density. The simple model input makes the model user friendly and more applicable in greenhouse crop and climate management practices.

Key words: Greenhouse, Cucumber, Product of thermal effectiveness and PAR, Leaf area index, Simulation model

李永秀, 罗卫红, 倪纪恒, 陈永山, 徐国彬, 金亮, 戴剑锋, 陈春宏, 卜崇兴. 基于辐射和温度热效应的温室水果黄瓜叶面积模型. 植物生态学报, 2006, 30(5): 861-867. DOI: 10.17521/cjpe.2006.0109

LI Yong-Xiu, LUO Wei-Hong, NI Ji-Heng, CHEN Yong-Shan, XU Guo-Bin, JIN Liang, DAI Jian-Feng, CHEN Chun-Hong, BU Chong-Xing. SIMULATION OF GREENHOUSE CUCUMBER LEAF AREA BASED ON RADIATION AND THERMAL EFFECTIVENESS. Chinese Journal of Plant Ecology, 2006, 30(5): 861-867. DOI: 10.17521/cjpe.2006.0109

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链接本文: https://www.plant-ecology.com/CN/10.17521/cjpe.2006.0109

https://www.plant-ecology.com/CN/Y2006/V30/I5/861

图/表 6

图1 展开叶数与第一真叶展开后的累积辐热积的关系 □:实测值Observed value —:拟合曲线Fitted curve

Fig.1 Relationship between number of leaves unfolding and accumulated product of thermal effectiveness and PAR (TEP) after unfolding of the first leaf

图2 叶长增长速率与叶序的关系图例同图1

Fig.2 Relationship between the increasing rate of leaf length and leaf order Ledgends see Fig. 1

图3 最大叶长与叶序的关系目图例同图1

Fig.3 Relationship between the maximum leaf length and leaf order Legends see Fig. 1

图4 叶面积与叶长的关系图例同图1

Fig.4 Relationship between leaf area and leaf length Legends see Fig. 1

图5 已摘除老叶数与第一真叶展开后的累积辐热积的关系图例同图1

Fig.5 Relationship between number of old leaves removed and accumulated product of thermal effectiveness and PAR (TEP) after unfolding of the first leaf Legends see Fig. 1

图6 叶面积指数的模拟值和实测值比较 ●:用累积辐热积预测的结果Predicted results using TEP Δ:用比叶面积法预测的结果Predicted results using SLA ×:用积温法预测的结果Predicted results using GDD —:1∶1直线The 1∶1 line

Fig.6 Comparison between simulated and observed leaf area index

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基于辐射和温度热效应的温室水果黄瓜叶面积模型

SIMULATION OF GREENHOUSE CUCUMBER LEAF AREA BASED ON RADIATION AND THERMAL EFFECTIVENESS

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