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[Simulation model for cucumber growth and development in sunlight greenhouse]. / 日光温室黄瓜生长发育模拟模型.
Cheng, Chen; Feng, Li-Ping; Xue, Qing-Yu; Li, Chun; Gong, Zhi-Hong; Dong, Chao-Yang; Wu, Lu; Wang, Chun-Lei; Liu, Shu-Mei; Li, Yi-Zhuo; Li, Zhen-Fa.
Afiliação
  • Cheng C; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Feng LP; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Xue QY; Tianjin Climate Center, Tianjin 300074, China.
  • Li C; Tianjin Climate Center, Tianjin 300074, China.
  • Gong ZH; Tianjin Climate Center, Tianjin 300074, China.
  • Dong CY; Tianjin Climate Center, Tianjin 300074, China.
  • Wu L; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Wang CL; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Liu SM; Tianjin Climate Center, Tianjin 300074, China.
  • Li YZ; College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China.
  • Li ZF; Tianjin Climate Center, Tianjin 300074, China.
Ying Yong Sheng Tai Xue Bao ; 30(10): 3491-3500, 2019 Oct.
Article em Zh | MEDLINE | ID: mdl-31621236
ABSTRACT
The dynamic simulation of cucumber growth and development in sunlight greenhouse can provide technical support for the intelligent management of cucumber production. According to the cucumber response characteristics to light and temperature, the cucumber development module based on the algorithm of clock model was established by using data from four-stage experiment with 'Jinyou 35' as experiment variety in two years. Based on the relationship between the leaf growth and key meteorological factors (temperature and radiation), leaf area index (LAI) module was established with the accumulated product of thermal effectiveness and photosynthetically active radiation (TEP) as independent variables. The simulation module of cucumber dry matter production was established by taking into consideration the double integral of LAI and daily length in photosynthesis per unit leaf area as well as the respiratory expenditure of different organs. Combined with water content of organs, fresh weight simulation module of cucumber organs was constructed. The whole cucumber development and growth simulation model in greenhouse was built based on each sub-module. The model parameters were calibrated and determined. The results showed that root mean square error (RMSE) of simulated values and observed values of four deve-lopment stages (from transplanting date to stretch tendril, to initial flowering, to early harvested and to uprooting), was 3.9-10.5 d. The normalized root mean square error (nRMSE) was 6.5%-28.6%. The coincidence index (D) was 0.79-0.97. The relationship between LAI and TEP was the regression of 'S' type curve. The RMSE of simulated and observed LAI values was 0.19. The nRMSE was 17.2%. The D value was 0.90. The RMSE of dry weight of root, stem, leaf, flower and fruit of the simulated values and observed values were 0.39-8.94 g·m-2. The nRMSE were 10.9%-17.7%. The D values were all above 0.98. The growth and development model of cucumber could accurately simulate the key development period of cucumber, leaf area and the dry and fresh weight of various organs and quantify the growth and development of cucumber in sunlight greenhouse.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cucumis sativus Tipo de estudo: Prognostic_studies Idioma: Zh Ano de publicação: 2019 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Cucumis sativus Tipo de estudo: Prognostic_studies Idioma: Zh Ano de publicação: 2019 Tipo de documento: Article