中文摘要：

通过甘蔗田间定位试验研究了种植模式（甘蔗单作、甘蔗-甜玉米间作（1∶1、2∶1）和施氮水平（300、525 kg·hm-2）对甘蔗群体经济效益、甘蔗产量、生物量积累动态变化及品质的影响。结果表明：低氮水平（300 kg·hm-2）下，甘蔗甜玉米间作（1∶1、2∶1）的经济效益分别高于单作甘蔗52.67%和20.59%，土地当量比（LER）均大于1，且甘蔗-甜玉米1∶1间作模式的LER高于甘蔗甜玉米2∶1间作31.50%；高氮水平（525 kg·hm-2）下，甘蔗甜玉米1∶1间作的经济效益和土地利用率分别高于单作26.25%和36.00%，而甘蔗-甜玉米2∶1间作与甘蔗单作相比无间作优势；甘蔗甜玉米间作中，因间作甘蔗最大生长速率（vm）减小，理论最大值（wm）、最快生长日（tm）等生物量动态累积特征参数的协调性劣于单作甘蔗，使间作甘蔗产量低于单作甘蔗9.72%～33.17%，而间作甜玉米产量比单作甜玉米高14.10%～24.43%；相比甘蔗单作，甘蔗-甜玉米间作对甘蔗品质无显著影响；甘蔗-甜玉米间作是实现甘蔗优质、高效种植的可行途径，其中甘蔗-甜玉米1∶1间作模式更为优化。

英文摘要：

A field experiment was conducted in the Experiment Station Farm of South China Agricultural University located in Guangzhou China to investigate the effect of sugarcane planting patterns （sugarcane monoculture, sugarcane-sweet corn 1∶1 intercropping, and sugarcanesweet corn 2∶1 intercropping） and different N input levels （300, 525 kg·hm-2） on yield, total biomass dynamic, quality and economic benefit of sugarcane. Results showed that the economic benefit of sugarcanesweet corn intercropping with the low N level was 52.67% to 20.59% （sugarcane-sweet corn 1∶1 to 2∶1 intercropping） higher than that of sugarcane monoculture, and the land equivalent ratio （LER） of which was higher than 1. The LER of sugarcane-sweet corn 1∶1 intercropping system was 31.5% higher than that of sugarcane-sweet corn 2∶1 intercropping system. Meanwhile, the economic benefit and the LER of sugarcane-sweet corn 1∶1 intercropping system with the high N level were 26.25% and 36.00% higher than that of sugarcane monoculture respectively, but the sugarcane-sweet corn 2∶1 intercropping system with the high N level had no advantages compared with the sugarcane monoculture. In the sugarcanesweet corn intercropping system, the yield of intercropped sugarcane was 9.72%-33.17% lower than that of monoculture because the eigenvectors such as maximum growth rate （vm）, theoretical maximum （wm） and the fastest growth day （tm） of the dynamic accumulation model of intercropped sugarcane were more uncoordinated than those of monoculture. However, the yield of intercropped sweet corn was 14.10%-24.43% higher than that of monoculture. Compared with sugarcane monoculture, sugarcane-sweet corn intercropping patterns had no significant effect on sugarcane quality. Therefore, it is feasible to apply sugarcane-sweet corn intercropping to realize high quality and high efficiency planting of sugarcane, and the sugarcane-sweet corn 1∶1 intercropping is the optimum intercropping pattern.