CAJ | 학술논문

为了评价基于养分专家系统 ( Nutrient Expert, 简称NE) 养分管理模式下的推荐施肥对农田环境效应的影响, 对121个田间试验中基于NE养分管理模式和农民习惯管理模式下的农田温室气体排放量进行了分析. 结果发现: NE养分管理模式在不降低作物产量的前提下, 大幅度提高了农田氮肥偏生产力, 显著降低了温室气体排放量. 与农民习惯施肥处理相比, NE 养分管理模式的 N2 O 排放量在小麦和玉米季分别降低了 60. 8%和53. 7%. 而在总的农田温室气体排放当量中, NE养分管理模式的温室气体排放当量较农民习惯施肥处理 ( FP)在小麦和玉米季分别降低了40. 8%和42. 3%. 农田温室气体排放当量与氮肥偏生产力间有显著的线性+平台关系, 即在一定范围内温室气体排放量随着氮肥偏生产力的提高而降低. 在本研究中, 当排放量分别降低到2 350 kg CO2 eq/hm2 (玉米) 和1 888 kg CO2 eq/hm2 (小麦) 时, 随着氮肥偏生产力的增加温室气体排放量有趋于不变的趋势. 总体来看, 基于NE养分管理模式的推荐施肥技术在华北平原减少农田温室气体排放方面有很好的应用前景.
위료평개기우양분전가계통 ( Nutrient Expert, 간칭NE) 양분관리모식하적추천시비대농전배경효응적영향, 대121개전간시험중기우NE양분관리모식화농민습관관리모식하적농전온실기체배방량진행료분석. 결과발현: NE양분관리모식재불강저작물산량적전제하, 대폭도제고료농전담비편생산력, 현저강저료온실기체배방량. 여농민습관시비처리상비, NE 양분관리모식적 N2 O 배방량재소맥화옥미계분별강저료 60. 8%화53. 7%. 이재총적농전온실기체배방당량중, NE양분관리모식적온실기체배방당량교농민습관시비처리 ( FP)재소맥화옥미계분별강저료40. 8%화42. 3%. 농전온실기체배방당량여담비편생산력간유현저적선성+평태관계, 즉재일정범위내온실기체배방량수착담비편생산력적제고이강저. 재본연구중, 당배방량분별강저도2 350 kg CO2 eq/hm2 (옥미) 화1 888 kg CO2 eq/hm2 (소맥) 시, 수착담비편생산력적증가온실기체배방량유추우불변적추세. 총체래간, 기우NE양분관리모식적추천시비기술재화북평원감소농전온실기체배방방면유흔호적응용전경.
121 wheat and maize field experiments, including NE recommendation ( NE) and farmers' practices ( FP) treat-ments, were used in this research to evaluate the effects of Nutrient Expert ( NE) on grain yield and greenhouse gas ( GHG) emission reduction in wheat and maize production. The results showed that the NE strategies significantly reduced N fertilizer input and greenhouse gas emission in comparison with FP at same yield level. The N2 O emission rate for NE decreased by 60. 8% and 53. 7% respectively than FP for wheat and maize. And the total Global Warming Potential ( GWP) for NE treat-ment was 40. 8% and 42. 3% lower than FP treatments for wheat and maize respectively. Significantly liner+plateau correla-tions were found between GWP and the nutrient use efficiency of PFP-N in this research. With the increasing of the nutrient use efficiency of PFP-N, the GWP had the trend of decreasing. When the GWP reached 1 888 kg CO2 eq/hm2 and 2 350 kg CO2 eq/hm2 for wheat and maize respectively, the GWP had the trend of keeping at a certain level. This research showed the po-tential advantage of NE nutrient management strategies in greenhouse gas emission reduction in the North China Plain.