中文摘要：

通过田间试验，研究了不同施氮水平下蚕豆接种根瘤菌GS374对蚕豆／玉米间作系统产量及蚕豆结瘤作用的影响。结果表明，不施氮处理接种根瘤菌所获得的单作或间作系统产量与不接种但施N225kghm^-2的相应系统产量相当，且施N225kghm^-2处理接种仍能促进蚕豆的结瘤作用。统计分析表明，与不接种根瘤菌、蚕豆单作、不施氮相比，接种、蚕豆／玉米间作、施氮均极显著地提高了蚕豆生物学产量，但只有间作能显著增加其籽粒产量；施氮显著增加玉米生物量和籽粒产量。施N225kghm^-2后，蚕豆接种、间作对玉米生物量无显著影响；但不施氮时蚕豆接种显著提高了与之间作的玉米籽粒和生物学产量，增幅分别为34．3％和25．6％。接种根瘤菌显著提高了不同氮处理以籽粒产量为基础计算的土地当量比和不施氮处理以生物学产量为基础计算的土地当量比。蚕豆接种根瘤菌与不接种相比，其单株根瘤数和根瘤干重均显著增加；间作与蚕豆单作相比对根瘤数的影响较小，但显著促进了蚕豆单株根瘤干重的增加。因此，本研究认为豆科作物接种合适的根瘤菌，是进一步提高豆科／禾本科作物间作系统间作优势的又一重要途径。

英文摘要：

A field experiment was conducted to investigate effects of inoculation of faba bean with rhizobium GS374 on total yield and nodulation of faba bean in a fababean/maize intercropping system receiving nil or 225 kg hm^-2 N. Resuits show that biomass or grain yield of fababean in Treatment NO where fababean was inoculated rhizobium GS374 was similar to those in Treatment N225 where fababean was not inoculated with rhizobium regardless of whether planted sole or intercropped. However, in Treatment N225, nodulation of faba bean was facilitated by rhizobium inoculation. Biomass of fababean was significantly enhanced by rhizobium inoculation, intercropping or N fertilization as compared with their respective check, while grain yield was increased only by intercropping. Both biomass and grain yield of maize were significantly improved by N fertilization. In Treatment N225 no significant effects of rhizobium inoculation and intercropping were observed on biomass of maize, while in Treatment No , the effect of inoculation on grain and biomass yield of maize in the intercropping system was significant, increasing by 34.3% and 25.6% , respectively. Inoculation also significantly improved grain-yield-based land equivalent ratio （LER） in treatments receiving N and biomass-based LER in Treatment N0. In addition, rhizobium inoculation markedly increased nodule number and nodule dry weight per faba bean plant, but its effect on nodule number was less in the intercropping system than in the sole system. So it is held that inoculation of bean crops with appropriate rhizobium is an approach to further promoting the merits of the legumious/gramineous intercropping system.