Study of evapotranspiration and crop coefficients for eggplant in a Venlo-type greenhouse in South China

被引:2
|
作者
Wang, Biyu [1 ,2 ]
Bao, Rongxuan [1 ]
Yan, Haofang [1 ,3 ]
Zheng, Hexiang [2 ]
Wu, Jiabin [2 ]
Zhang, Chuan [4 ]
Wang, Guoqing [3 ]
机构
[1] Jiangsu Univ, Res Ctr Fluid Machinery Engn & Technol, Zhenjiang 212013, Peoples R China
[2] China Inst Water Resources & Hydropower Res, Inst Pastoral Hydraul Res, Hohhot, Peoples R China
[3] Nanjing Hydraul Res Inst, State Key Lab Hydrol Water Resources & Hydraul Eng, Nanjing, Peoples R China
[4] Jiangsu Univ, Sch Agr Equipment Engn, Zhenjiang, Peoples R China
关键词
lysimeter; meteorological data; Penman-Monteith model; radiation; reference evapotranspiration; & eacute; vapotranspiration de r & eacute; f & eacute; rence; rayonnement; mod & egrave; le Penman-Monteith; donn & eacute; es m & eacute; t & eacute; orologiques; lysim & egrave; tre; PREDICTING EVAPOTRANSPIRATION; PENMAN-MONTEITH; MODELS; TRANSPIRATION; CLIMATE; REGION; WHEAT; TOMATO; SOLAR;
D O I
10.1002/ird.3025
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
Determination of greenhouse evapotranspiration (ETc) and the response mechanism of environmental factors are important for accurate irrigation management and greenhouse environmental control. Models for predicting ETc under greenhouse conditions are extremely scarce in comparison to those under open field conditions. Meteorological data inside and outside a Venlo-type greenhouse were measured from April to July 2015 to estimate the reference evapotranspiration (ET0) based on four approaches (the Penman-Monteith model, a revised Penman-Monteith model, a modified Priestley-Taylor approach and the Irmark-Allen fitting approach). The daily ET0 values inside the greenhouse calculated from these four methods presented similar variation trends but were somewhat different. The ETc for eggplant in the greenhouse was measured by lysimeters to estimate the crop coefficient with the FAO-56 method (Kc = ETc/ET0), and the response mechanism of environmental factors on the ETc was analysed. The results showed that the crop coefficients of the eggplant were different, with values of 0.94-1.97, 0.83-1.87, 0.64-1.34 and 0.58-1.21 based on the ET0 from the Penman-Monteith model, revised Penman-Monteith model, modified Priestley-Taylor approach and Irmark-Allen fitting approach, respectively; the net radiation showed the highest correlation with the ETc; the secondary parameters were the air temperature and solar radiation, with R2 values equal to 0.77 and 0.75, respectively; and the relative humidity and soil temperature showed different extents of influence on the ETc. The results of this study provide more options for greenhouse cultivars to accurately determine the ETc of eggplants using the FAO-56 method based on the availability of different meteorological data. La d & eacute;termination de l'& eacute;vapotranspiration de serre (ETc) et du m & eacute;canisme de r & eacute;ponse des facteurs environnementaux sont importantes pour une gestion pr & eacute;cise de l'irrigation et un contr & ocirc;le de l'environnement de la serre. Les mod & egrave;les de pr & eacute;diction de l'ETc dans des conditions de serre sont extr & ecirc;mement rares par rapport & agrave; ceux utilis & eacute;s dans des conditions de culture en plein champ. Les donn & eacute;es m & eacute;t & eacute;orologiques & agrave; l'int & eacute;rieur et & agrave; l'ext & eacute;rieur d'une serre de type Venlo ont & eacute;t & eacute; mesur & eacute;es dans la p & eacute;riode d'avril & agrave; juillet 2015 pour estimer l'& eacute;vapotranspiration de r & eacute;f & eacute;rence (ET0) sur la base de quatre approches (le mod & egrave;le de Penman-Monteith, le mod & egrave;le de Penman-Monteith r & eacute;vis & eacute;, l'approche Priestley-Taylor modifi & eacute;e et l'approche d'ajustement Irmark-Allen). Les valeurs quotidiennes de l'ET0 & agrave; l'int & eacute;rieur de la serre calcul & eacute;es & agrave; partir de ces quatre m & eacute;thodes pr & eacute;sentaient des tendances de variation similaires mais & eacute;taient quelque peu diff & eacute;rentes. L'ETc de l'aubergine en serre a & eacute;t & eacute; mesur & eacute;e en utilisant des lysim & egrave;tres pour estimer le coefficient cultural avec la m & eacute;thode FAO-56 (Kc = ETc/ET0), et le m & eacute;canisme de r & eacute;ponse des facteurs environnementaux sur l'ETc a & eacute;t & eacute; analys & eacute;. Les r & eacute;sultats ont montr & eacute; que le coefficient cultural de l'aubergine & eacute;taient diff & eacute;rents, avec des valeurs de 0,94-1,97, 0,83-1,87, 0,64-1,34 et 0,58-1,21 bas & eacute;es sur l'ET0 du mod & egrave;le de Penman-Monteith, du mod & egrave;le de Penman-Monteith r & eacute;vis & eacute;, de l'approche Priestley-Taylor modifi & eacute;e et de l'approche d'ajustement Irmark-Allen, respectivement; le rayonnement net a montr & eacute; la corr & eacute;lation la plus & eacute;lev & eacute;e avec l'ETc; les param & egrave;tres secondaires & eacute;taient la temp & eacute;rature de l'air et le rayonnement solaire, avec des valeurs R2 & eacute;gales & agrave; 0,77 et 0,75, respectivement; et l'humidit & eacute; relative et la temp & eacute;rature du sol ont montr & eacute; des degr & eacute;s d'influence diff & eacute;rents sur l'ETc. Les r & eacute;sultats de cette & eacute;tude offrent plus d'options aux cultivars de serre pour d & eacute;terminer avec pr & eacute;cision l'ETc des aubergines en utilisant la m & eacute;thode FAO-56 en fonction de la disponibilit & eacute; de diff & eacute;rentes donn & eacute;es m & eacute;t & eacute;orologiques.
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