Kuglarz Krzysztof, Bury Marek, Kasprzycka Agnieszka, Lalak-Kańczugowska Justyna
Faculty of Environmental Management and Agriculture, Department of Agronomy, West Pomeranian University of Technology Szczecin, Szczecin, Poland.
The Bohdan Dobrzański Institute of Agrophysics of the Polish Academy of Sciences, Lublin, Poland.
Environ Technol. 2020 Sep;41(21):2833-2843. doi: 10.1080/09593330.2019.1584251. Epub 2019 Mar 4.
The aim of the study was to determine the biogas productivity from selected cultivars of sorghum ( Moench) and maize ( L.) depending on the dose of mineral fertilization with nitrogen. The topic is novelty in the northern Poland area due to the fact that this crop is not very widespread here. The silage samples were derived from two experiments: (1) two factors experiment with sorghum varieties (Arbatax, KWS Maja, Herkules) and two doses of mineral nitrogen fertilization (0 and 150 kg haN) in split-plot design. (2) one-factor experiment with fodder maize, variety NK Magitop, and two doses of mineral nitrogen fertilization (0 and 150 kg haN) in a randomized complete block design. The experiment was performed in four replications in the split-plot design. Methane fermentation was carried out under mesophilic conditions. The temperature of the process was 37°C ± 1°C, while pH 7 ± 0.1. The content of total solids in the bioreactor was 7.0%. The composition of the gas produced was measured once a day with the use of an automatic biogas analyser (GFM 416, GasData). The trial was run in triplicate until the daily yield was less than 1% of the cumulative biogas yield [DIN 38 414-S8. Sediments and sediments. Determination of fermentation characteristics; 1985]. Sorghum was characterized by higher average biogas productivity (about 12%), higher methane content in biogas (about 10%), and higher methane productivity (about 43%). It can, therefore, be stated that sorghum represents as an alternative plant to maize for the purpose of biogas production.
本研究的目的是确定选定的高粱（黍属）和玉米（玉蜀黍属）品种在不同氮肥施用量下的沼气产量。由于这种作物在波兰北部地区并不十分普遍，因此该主题具有新颖性。青贮饲料样本来自两项实验：（1）两因素实验，涉及高粱品种（阿尔巴塔克斯、KWS玛雅、大力神）和两种矿物氮肥施用量（0和150 kg haN），采用裂区设计。（2）单因素实验，涉及饲料玉米品种NK马吉托普和两种矿物氮肥施用量（0和150 kg haN），采用随机完全区组设计。在裂区设计中进行了四次重复实验。甲烷发酵在中温条件下进行。过程温度为37°C±1°C，pH值为7±0.1。生物反应器中总固体含量为7.0%。每天使用自动沼气分析仪（GFM 416，GasData）测量产生气体的成分。该试验重复进行三次，直到日产量低于累积沼气产量的1%[DIN 38 414-S8. 沉积物和沉淀物。发酵特性的测定；1985]。高粱的特点是平均沼气产量较高（约12%）、沼气中甲烷含量较高（约10%）和甲烷产量较高（约43%）。因此，可以说高粱是沼气生产中玉米的替代植物。
