中文摘要：

为探究甘蔗-大豆间作对甘蔗产量、品质及经济效益的影响,在施用尿素150kg·hm-2条件下,选择3个甘蔗品种（B8、ROC22及GT21）进行了甘蔗单作、甘蔗-大豆间作两种种植模式的试验.结果表明：甘蔗-大豆间作对甘蔗的有效茎数、茎径以及原料蔗、蔗糖产量均有显著影响,而对原料蔗品质影响不大;与单作相比,间作大豆处理的宿根蔗茎径大小、有效茎数、蔗茎产量和糖产量分别提高5.1%~8.7%、7.9%~31.0%、9.0%~40.5%和5.6%~39.5%;每公顷原料蔗＋大豆、糖＋大豆可分别增收5.89~7.93万元和5.83~7.72万元;3个品种中,ROC22间作大豆的经济收益最高,而宿根蔗B8和GT21的产量均高于ROC22.表明甘蔗-大豆间作是减少氮肥施用、提高经济收入的有效栽培措施.

英文摘要：

To explore the effects of sugarcane-soybean intercropping on cane yield,quality and economic benefit,three sugarcane cultivars（ B8,ROC22 and GT21） planted under sugarcane monoculture and sugarcane-soybean intercropping with low nitrogen fertilization（ urea application of 150kg·hm-2）. The field design was a split-plot with the cropping pattern being the principal factor and the sugarcane cultivar being the secondary factor. The results showed that the millable stalks,stalk diameter,cane yield and sugar production were significantly affected by sugarcane-soybean intercropping while the cane quality wasn’t changed obviously. Compared with sugarcane monoculture,the stalk diameter,millable stalks,cane yield and sugar production in the intercropping system were increased by 5. 1%-8. 7%,7. 9%-31. 0%,9. 0%-40. 5% and 5. 6%-39. 5%,respectively. The total incomes of cane and soybean,and sugar and soybean were increased by 58900-79300 yuan·hm-2and 58300-77200 yuan·hm-2,respectively. Among the three sugarcane cultivars in the sugarcane-soybean intercropping pattern,the economic benefit was the highest in ROC22,while the ratoon cane yields of GT21 and B8 were higher than that of ROC22. The results also indicated that sugarcane-soybean intercropping is an effective planting method to reduce nitrogen fertilizer application and increase economic income in sugarcane production.