江西省甜玉米与薄荷间作模式的效益分析

Benefit of Sweet Corn/Summer Savory Intercropping in Jiangxi Province

通过田间试验,研究了甜玉米与薄荷间作对甜玉米产量、主要农艺指标的影响。结果表明,甜玉米与薄荷间作模式的土地当量比大于1(1.24),说明甜玉米与薄荷间作具有一定的产量优势;与单作相比,间作甜玉米千粒重提高12.61%,差异显著;甜玉米与薄荷间作群体经济效益提高24.44%,指标的差异达到极显著水平;生长后期,甜玉米与薄荷间作不仅可改善作物群体结构,提高自然资源利用率,而且可减少化肥施用量,在甜玉米生产过程中还能减少化学农药使用次数,具有显著的经济效益和环境效益。

Field experiments were conducted to investigate the effect of sweet corn/summer savory intercropping on yield,agronomic traits of sweet corn. Results showed a high land equivalent ratio（1.24） for sweet corn/summer savory intercropping,indicating a certain degree of yield advantage of sweet corn/summer savory intercropping. Compared with the monoculture of sweet corn,the intercropping significantly increased the 1 000-grain weight of sweet corn by 12.61% ,and the economic benefit by 24.44% . Intercropping positively influenced radiation use efficiency during the later stage of growth. Therefore sweet corn/summer savory intercropping has significant economic and environmental benefits. It not only improves population structure and resource use efficiency of sweet corn,but also reduces fertilizer application. It also reduces the amount of chemical pesticides used during the sweet corn production.