When harvesting winter oilseed rape (WOSR), leaving higher (~0.3–0.4 m) crop stubble is an effective method of reducing fuel consumption and contaminant emissions of a combine harvester equipped with the tangential threshing apparatus and straw walkers. At a speed of 4 km h−1, when the stubble height of WOSR was increased from 0.2 to 0.4 m, the mass of material other than grain (MOG) fed to the harvester was reduced by 7 t h−1, resulting in a reduction of 6.2 l h−1 in fuel consumption, 5.7 kg h−1 in carbon equivalent (CE), and 16.3 kg h−1 in CO2 emissions. A more accurate estimate of harvester performance is the fuel consumption per ton of threshed seeds. On increasing the MOG mass feed rate to 15.6 t h−1, the fuel consumption per ton of threshed rapeseeds decreased to 3.33 l t−1, CE reached 40.2 kg h−1 or 3.0 kg t−1, and CO2 emissions reached 121.3 kg h−1 or 9.2 kg t−1 of threshed rapeseed. When optimizing the automatic speed control system of the combine harvester, the MOG mass feed rate, the permissible limit of seed losses, and fuel consumption per ton of threshed seeds must be considered.

中文翻译：

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减少冬季油菜收获期间与联合收获机操作相关的不利环境影响

在收获冬季油菜 (WOSR) 时，留下较高 (~0.3–0.4 m) 的作物茬是减少配备切向脱粒装置和秸秆助推器的联合收割机的燃料消耗和污染物排放的有效方法。在 4 km h−1 的速度下，当 WOSR 的茬高从 0.2 m 增加到 0.4 m 时，送入收割机的除谷物 (MOG) 以外的材料质量减少了 7 th−1，导致减少燃料消耗为 6.2 lh-1，碳当量 (CE) 为 5.7 kg h-1，CO2 排放量为 16.3 kg h-1。收割机性能的更准确估计是每吨脱粒种子的燃料消耗。在将 MOG 质量喂料速率提高到 15.6 t h-1 时，每吨脱粒油菜籽的燃料消耗降低到 3.33 l t-1，CE 达到 40.2 kg h-1 或 3.0 kg t-1，CO2 排放量达到 121。3 kg h-1 或 9.2 kg t-1 脱粒油菜籽。在优化联合收割机的自动调速系统时，必须考虑MOG的质量进给率、种子损失的允许限度以及每吨脱粒种子的燃料消耗。