عنوان مقاله [English]
نویسنده [English]چکیده [English]
Phenology is concerned with the study of natural period events in the life of plants and animals. Changes in phenological events are one of the important reaction of Living creatures to climate change. In this research, the phenological stages and thermal requirements of black Mashhad sweet cherry cultivar were investigated in the Barzok region of Kashan during the years 1394-95. For this purpose, the monitoring site of the meteorological parameters and phenological stages was created and phenological observations were carried out simultaneously with meteorological observations in accordance with the BBCH scale. The results showed that in the studied area, the cherry tree in its annual biological cycle needs up to 2040 degree-day in terms of effective temperature and 2775 thermal units in terms of active temperature by the end of the period. The highest thermal unit requirement for cherry is related to the shoot development phase, which is equal to 658.8 degree-day in terms of effective temperature and 845.5 thermal units in terms of active temperature, and the lowest thermal unit is 91 degree- day in terms of effective temperature and 127 thermal units in terms of active temperature related to the leaf development stage.