חיפוש מתקדם
Acta Horticulturae
Dayan, E., A.R.O., Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Fuchs, M., A.R.O., Soil and Water Inst. Beit Dagan, Post Box 6., IL 50250, Israel
Plaut, Z., Southern R and D. Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Presnov, E., A.R.O., Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Grava, A., A.R.O., Soil and Water Inst. Beit Dagan, Post Box 6., IL 50250, Israel
Matan, E., Southern R and D. Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Solphoy, A., Southern R and D. Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Mugira, U., Extension Service. Ministry of Agriculture, Beit Dagan, IL 50250, United States
Pines, N., Extension Service. Ministry of Agriculture, Beit Dagan, IL 50250, United States
Rose plants absorb most of the solar radiation entering the greenhouse. In a well-irrigated vigorously growing crop, high transpiration rates during morning and midday hours dissipate a large proportion of the absorbed radiation as latent heat. The remaining radiation heats the crop and the air. During the afternoon, with a similar load of absorbed radiation and higher outside air temperature and wind velocity, the crop transpires less than during the morning, yet it still cools incoming air. Analysis of decoupling coefficients shows that greenhouse plants are more decoupled from ambient climate during morning and noon periods than during afternoons. In decoupled systems, transpiration depends mainly on radiation; canopy resistance and ambient humidity have only a secondary effect. During afternoons, higher wind velocity and lower transpiration rates increase the coupling of the crop to ambient air, resulting in the observed cooling.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Transpiration of roses in greenhouses
554
Dayan, E., A.R.O., Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Fuchs, M., A.R.O., Soil and Water Inst. Beit Dagan, Post Box 6., IL 50250, Israel
Plaut, Z., Southern R and D. Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Presnov, E., A.R.O., Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Grava, A., A.R.O., Soil and Water Inst. Beit Dagan, Post Box 6., IL 50250, Israel
Matan, E., Southern R and D. Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Solphoy, A., Southern R and D. Besor Exp. Stat. Mobile, Post Negev 4, IL 85400, Israel
Mugira, U., Extension Service. Ministry of Agriculture, Beit Dagan, IL 50250, United States
Pines, N., Extension Service. Ministry of Agriculture, Beit Dagan, IL 50250, United States
Transpiration of roses in greenhouses
Rose plants absorb most of the solar radiation entering the greenhouse. In a well-irrigated vigorously growing crop, high transpiration rates during morning and midday hours dissipate a large proportion of the absorbed radiation as latent heat. The remaining radiation heats the crop and the air. During the afternoon, with a similar load of absorbed radiation and higher outside air temperature and wind velocity, the crop transpires less than during the morning, yet it still cools incoming air. Analysis of decoupling coefficients shows that greenhouse plants are more decoupled from ambient climate during morning and noon periods than during afternoons. In decoupled systems, transpiration depends mainly on radiation; canopy resistance and ambient humidity have only a secondary effect. During afternoons, higher wind velocity and lower transpiration rates increase the coupling of the crop to ambient air, resulting in the observed cooling.
Scientific Publication
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