【摘要】 【目的】为建立我国甜菜测土推荐施氮系统。【方法】采用作物土壤养分丰缺指标推荐施肥系统研究新方法，研究了我国甜菜土壤氮素丰缺指标与适宜施氮量。【结果】我国甜菜土壤有机质第1～8级丰缺指标依次为≥64、37～64、22～37、13～22、7～13、4～7、2.5～4和<2.5 g/kg;土壤全氮第1～8级丰缺指标依次为≥4.4、2.6～4.4、1.5～2.6、0.9～1.5、0.6～0.9、0.4～0.6、0.2～0.4和<0.2 g/kg;土壤碱解氮第1～8级丰缺指标依次为≥320、170～320、91～170、48～91、26～48、14～26、8～14和<8 mg/kg。当目标产量30～120 t/hm~2、氮肥利用率30%～50%时，甜菜第1～8级土壤适宜施氮量分别为0、27～180、54～360、81～540、108～720、135～900、162～1 080和189～1 260 kg/hm~2。【结论】本研究成功建立了我国甜菜基于土壤氮素丰缺指标的推荐施氮系统，为我国甜菜测土施氮提供了科学依据。更多还原

【Abstract】 【Objective】To establish the system of soil testing and N fertilizer recommendation for sugar beet in China, 【Methods】 a recommended fertilization system of crop based on soil nutrient abundance and deficiency index（ADI） was employed to investigate the ADI of soil nitrogen and the appropriate N application rates（RNAR） for sugar beet in China. 【Results】The ADI of soil organic matter for the 1^st to 8^th level were ≥64, 37-64, 22-37, 13-22, 7-13, 4-7, 2.5-4 and <2.5 g/kg, respectively; The ADI of soil total nitrogen for the 1^st to 8^th level were ≥4.4, 2.6-4.4, 1.5-2.6, 0.9-1.5, 0.6-0.9, 0.4-0.6, 0.2-0.4 and <0.2 g/kg, respectively; The ADI of soil alkaline hydrolysis nitrogen for the 1^st to 8^th level were ≥320, 170-320, 91-170, 48-91, 26-48, 14-26, 8-14 and <8 mg/kg, respectively. When the N fertilizer use efficiency ranged from 30% to 50%, and the target yield was between 30 and 120 t/hm², the RNAR for the soil N abundance and deficiency levels of 1^st to 8^th were 0, 27-180, 54-360, 81-540, 108-720, 135-900, 162-1 080 and 189-1 260 kg/hm², respectively. 【Conclusion】This study successfully established a recommended N application system based on ADI of soil nitrogen, which provided a scientific basis for soil testing and N fertilizer recommendation for sugar beets in China.更多还原