This study aimed to determine the suitability of sugar beet pulp digestion by-products as soil amendments for maize grown for energy purposes. In a plot experiment, nitrogen fertilizer at a standard rate of 200 kg N ha⁻¹ was applied as a control vs. treatment with solid and liquid digestate fractions. Digestate was obtained from a gasifier processing only sugar beet pulp. Following harvest, heating and calorific values were determined together with the yield and chemical composition of the maize cob and stover. It was found that soil amendment with crude (unseparated) digestate or its two fractions (separated into liquid and solid) produced higher yields of maize cobs and stover compared with the application of standard fertilizer. An analysis of the energy value of the maize plant revealed differences between the studied soil treatments. Cobs obtained from plots treated with the digestate showed higher calorific and heating values than those obtained from control plots; however, maize stover from control plots showed higher calorific and heating values compared with plants from other experimental plots. It can be concluded that by-products obtained from sugar beet pulp digestion can be alternatively used as a soil amendment for maize production in a crop rotation with sugar beet. Among studied amendments the solid fraction of the digestate was found to have the best performance.

中文翻译：

---

甜菜浆粕在土壤改良剂在能量玉米生产中的应用

这项研究的目的是确定甜菜粕消化副产物是否适合作为玉米改良土壤，以补充能源。在样地试验中，氮肥的标准施用量为200 kg N ha ^{- 1}相对于用固体和液体消化馏分处理的对照而言，施用了“黄酮”。从仅处理甜菜浆的气化炉中获得消化液。收获后，测定玉米的热值和热值以及玉米芯和秸秆的产量和化学组成。研究发现，与施用标准肥料相比，使用粗制（未分离的）消化物或其两部分（分为液体和固体）的土壤改良剂可产生更高的玉米芯和秸秆产量。玉米植物能量值的分析揭示了所研究的土壤处理方法之间的差异。从消化物处理过的小块中获得的芯棒比从对照小块获得的穗子具有更高的热值和热值。然而，与其他实验区的植物相比，对照区的玉米秸秆表现出更高的发热量和热值。可以得出结论，从甜菜纸浆消化中获得的副产物可以替代地用作土壤改良剂，用于在使用甜菜的农作物轮作中生产玉米。在研究的修正物中，发现消化物的固体部分具有最佳性能。