Naslov
Suvišna voda u dreniranim tlima
(Excess water in drained soil)

Autori
Šimunić I., Tomić F.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Proceedings from XXII Conference of the Danubian countries on the hydrological forecasting and hydrological bases of water management / N/a - Brno, 2004

Skup
XXII Conference of the Danubian countries on the hydrological forecasting and hydrological bases of water management

Mjesto i datum
Brno, Češka Republika, N/a

Vrsta sudjelovanja
Demonstracija

Vrsta recenzije
Nije recenziran

Ključne riječi
suvišna voda
(Excess water; drained Gleyic Podzoluvisol; drainage discharge; Palmer’ s method)

Sažetak
In the period 1999-2001, investigations involving a drainpipe spacing of 15 m combined with contact hydraulic material – gravel were conducted on drained Gleyic Podzoluvisol with the following objectives: To determine the total annual drainage discharge (excess water) and compare it with the mathematical model after Palmer. Reference evapotranspiration was calculated according to the Penman-Monteith method. Investigations were carried out at the amelioration trial field Jelenščak near Kutina, on drained Gleyic Podzoluvisol. The studied drainpipe spacing was 15 m in combination with contact hydraulic material – gravel (&oslash ; 5-25 mm). Drainpipe length was 95 m, diameter 65 mm, average slope 3 ‰ and average depth 1 m. Drainpipes discharged directly into open canals. Plastic (PVC) pipes, corrugated and perforated, were used. Drainage discharge was measured continuously by means of automatic electronic meters (limnimeters), which were installed at the drainpipe end discharging into open canals. Maize was sown at the beginning of May and harvested in October 1999. Winter wheat was sown in the autumn of 2000 and harvested in July 2001. Excess water measured with electronic meters amounted to 236 mm in 1999, 130 mm in 2000, and 133 mm in 2001. Excess water in soil calculated by Palmer’ s method was 263 mm in 1999, 124 mm in 2000, and 160 mm in 2001. The obtained results clearly show that the difference between of direct measurements and those given by Palmer’ s method was the lesser in 2000 (drainage discharge was higher for 6 mm), while differences were indentical in 1999 and in 2001 (drainage discharges were higher for 27 mm). Consequently, excess water in drained soil of the central Sava valley calculated by Palmer’ s method is acceptable and gave rather reliable date of excess water in drained soil.

Izvorni jezik
Engleski

Znanstvena područja
Poljoprivreda (agronomija)

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