Морфолошке и продуктивне особине мискантуса у променљивом водном режиму
Morphological and productive properties of miscanthus in a variable water regime
Authors
Đurić, NenadPopović, Vera
Tabaković, Marijenka
Jovovic, Zoran
Ćurović, Milić
Mladenović Glamočlija, Milena
Rakašćanin, Nikola
Glamočlija, Đorđe
Conference object (Published version)
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Show full item recordAbstract
Rezultati trogodišnjih mikroogleda, predstavljeni u ovom radu, deo
su višegodišnjih istraživanja započetih 2012. godine na oglednom polju u Surduku.
Predmet istraživanja je miskantus, klon uvezen iz Nemačke za potrebe introdukcije
u poljoprivrednu proizvodnju energetskih useva. Zasad je zasnovan na černozemu
na lesnoj zaravni koji pripada kategoriji najplodnijih zemljišta. U periodu 2016-
2018., postavljene su dve varijante istraživanja (kontrola i varijanta sa
prihranjivanjem azotom). Tokom godišnjeg životnog ciklusa praćena je dinamika
porasta biljaka, merenjem morfoloških pokazatelja u fenofazama najvažnijim za
formiranje prinosa stabala. Posle berbe određeni su sadržaj vode i celuloze u
vazdušno suvim stablima i obračunat prinos stabala. Dobijene vrednosti poređene
su po godinama istraživanja da bi se odredio uticaj meteoroloških činilaca na
godišnji porast miskantusa. Dobijeni rezultati pokazuju da miskantus vrlo dobro
uspeva na plodnom zemljištu dajući visoku produkci...ju biomase. U trogodišnjem
proseku dobijeno je 24.990 kg ha-1
vazdušno suvih stabala. Miskantus je tolerantan
na letnje suše zahvaljujući snažnom i dubokohodnom korenovom sistemu koji se
svake godine razvija i pojedine žile prodiru u duboke slojeve zemljišta. Tokom
istraživanja u sve tri godine bilo je manje padavina od uslovno-optimalnih, ali je
najpovoljniji mesečni raspored bio u 2018. godini. Raspored padavina u periodu
april-oktobar ima najveću značaj na bokorenje, porast stabala i ukupan prinos
biomase. U trogodišnjem proseku prihranjivanje azotom značajno je povećalo
prinos suvih stabala, ali je efekat dopunske ishrane biljaka bio najveći u godini sa
najpovoljnijim vodnim režimom. Proučavani tretmani nisu uticali na sadržaj
celuloze u suvim stablima
The results of three-year plot trials are part of several years of
research started in 2012 in the field of Surduk. The subject of the research is a
mischantus, a clone imported from Germany for introduction to energy crops
production. The plantation has been formed on chernozem, which belongs to the
category of the most fertile soils. In period 2016-2018 were two variants – control
and variant with nitrogen top dressing. During the annual life cycle, the dynamics
of plant growth are monitored by measuring morphological indicators in phenophases most important for the formation of dry stalks yields. After harvest during
the winter, the content of water and cellulose in dry stalks were determined and the
calculated yield of stalks. The obtained values of the morphological indicators and
the yield were compared with the years of research in order to determine the effect
of meteorological factors on the annual increase in the miscanthus.
The results show that miscanthus grows w...ell in fertile soil giving a high yield
of dry stalks. The miskantus is tolerant of summer drought because it has a well
developed root system. In the period April-October 2016-2018 there was less
precipitation than the needs of plants, but the month schedule was most favorable
in 2018. In the three-year average, nitrogen storage significantly increased the
yield of dry stalks, but the effect of top dressing was the highest in the year with
the highest rainfall. The studied treatments did not affect the cellulose content in
dry stalks.
Keywords:
miskantus / vodni režim / prihrana / azot / morfološke i produktivne osobine / miscanthus / water regime / nitrogen top dressing / morphological and productive propertiesSource:
33. Savetovanje agronoma, veterinara, tehnologa i agroekonomista - Зборник научних радова Института ПКБ Агроекономик, 2019, 25, 1-2, 89-98Publisher:
- Beograd : Institut PKB Agroekonomik, Padinska Skela