Paper presented the transpiration values of greenhouse tomatoes grown on mineral wool, obtained from the model solutions and measured ones. Four models of transpiration (most frequently quoted in literature) were studied while the measurements were done by lysimeter method. It was found that the Stanghellini transpiration model describes the studied process in the best way. However, this model requires such input parameters of analysed empirical system which are difficult to measure (e.g. the temperature of roof and leaves). On other hand, a comparative analysis of the results obtained from solution of Nederchoff model with the measured values showed satisfactory precision (r=0.93). The solution of this model may be obtained on the basis of standard data defining physical parameters of greenhouse microclimate.
Исследования проведено в теплице с помидорами сорта Нортона в 10-литровых фольговых цилиндрах, заполненных огородным торфом, выизвесткованным до pH 6,0. Исследовалось влияние растущих доз азота в виде гранулята и карбамида на урожай плодов, содержание витамина С, углеводов, а также азота в субстрате и листьях. Отмечено пригодность кератино-коро-карбамидного гранулята к удобрению выращиваемых помидоров при содержании минерального азота в субстрате 150-200 мг/л.