Charakterystyka agroklimatyczna północno-wschodniego obszaru Mazowsza na podstawie danych ze stacji meteorologicznej w Ostrołęce

On the base of meteorological data obtained from Ostrołęka measure point (years 1951-2000), the agrometeorological characteristics of north-eastern part of Mazovia region were made. It was pointed out that this region seems to be classified as typical in Poland, but most thermal harsh all over Mazovia region. Mean average air temperature amounted (7,4°C ), but growing season lasted rather no so long, only 211 days. The last occurrenees of ground frosts were recorded until ends of April. Precipitations totals were suitable for crops, and amounted about 568,7 mm. Drought periods were 110 frequent. Even those shortest, more then ten days continuously, occurred only twice a year.