- Tytuł:
-
Energetyczna efektywność produkcji biomasy wierzby systemem Eko-Salix
Energy efficiency of production willow biomass obtained by the Eko-Salix system - Autorzy:
-
Tworkowski, J.
Stolarski, M.J.
Szczukowski, S.
Krzyzaniak, M. - Powiązania:
- https://bibliotekanauki.pl/articles/805661.pdf
- Data publikacji:
- 2015
- Wydawca:
- Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
- Opis:
-
W pracy określono skumulowane nakłady materiałowo-energetyczne oraz wskaźnik efektywności energetycznej uprawy i produkcji zrębków wierzby w systemie Eko-Salix w 5-letniej rotacji zbioru na gruntach rolniczych nieprzydatnych pod rośliny konsumpcyjne. Skumulowane nakłady energii na uprawę wierzby i produkcję zrębków zawarte były w przedziale od 8,2 do 11,3 GJ·ha⁻¹·rok⁻¹. Zbiór maszynowy roślin wierzby generował średnio o 37% niższe nakłady materiałowo-energetyczne niż ręczny sposób zbioru roślin. Wskaźnik efektywności energetycznej produkcji zrębków wierzby wahał się od 12,3 do 21,2.
The aim of the paper was to determine the material and energy inputs and the energy efficiency of production for willow biomass obtained from a homogeneous and a mixed clone crop in the Eko-Salix system in 5-year rotation, harvested manually and by machine. The basis of the conducted study was a two-factor, large-area fi eld experiment, carried out in four replications. The following stages were distinguished in the analysis of the energy efficiency of willow production: plantation establishment (drilling holes with a water injection hydraulic auger and manual planting of live stakes and their pressing down), weed cutting with a petrol scythe. The distinguished material and energy inputs for biomass production after the fifth year of its cultivation were: inputs related to plantation establishment, fertilization, machine and manual plant harvesting and chipping and biomass transport within the plantation. Total incurred inputs were divided into stages. The first covered plantation establishment and the second its use. The following energy streams were isolated in the analysis of the material and energy inputs incurred on willow establishment and production: direct energy carriers (fuels), consumption of fixed assets and materials for their repairs (tractors, machines, tools), use of mineral fertilizers, consumption of agricultural plant raw materials (cuttings) and human labor. The analysis of the energy efficiency of willow cultivation and willow chip production was presented based on the average fresh biomass yield from the homogeneous UWM 043 clone crop and the mixed crop of the UWM clones: 043, 067, 046 harvested manually and by machine. In the Eko-Salix system on peat-muck soil using extensive agricultural solutions and at a willow plant density of 4.5 thousand⋅ha⁻¹ and harvesting in five-year rotation, 192 GJ·ha⁻¹·year⁻¹ of energy contained in the yield was obtained on average in the homogeneous UWM 043 clone crop, around 44% more than from the mixed crop of the UWM clones: 043, 067, 046. The cumulative material and energy inputs incurred on willow cultivation and production in five-year rotation amounted to 8.2-11.3 GJ·ha⁻¹·year⁻¹ and the inputs related to the use of direct energy carriers dominated in the energy structure. Machine willow plant harvesting using a specialist tractor (forwarder) equipped with a felling head and a built-in wood chipper in the homogeneous and the mixed crop generated material and energy inputs by around 37% lower than manual plant harvesting using a petrol saw and chopping with a wood chipper. The energy efficiency index of willow production ranged from 12.3 to 21.2. - Źródło:
-
Zeszyty Problemowe Postępów Nauk Rolniczych; 2015, 582
0084-5477 - Pojawia się w:
- Zeszyty Problemowe Postępów Nauk Rolniczych
- Dostawca treści:
- Biblioteka Nauki