为了筛选最适合在广东省种植的甜玉米-大豆间作模式,通过甜玉米-大豆4种比例间作模式(1∶2、2∶2、2∶3和2∶4)3年6季的田间对比试验,分析了不同种植系统的产量效益.结果表明:除1∶2间作模式外,其他3种模式均具有间作优势,其中2∶4间作模式的增产优势最大,该模式的土地当量比均大于1(1.15~1.49),且体系相对于单作的净增产值为1 372.82~6 430.75 kg/hm2.就产量而言,甜玉米-大豆2∶4间作模式的增产优势最大,是比较理想的间作模式.
In order to sift the most appropriate pattern of sweet corn-soybean intercropping in Guangdong province, a three-year field comparative experiment was conducted to investigate the yield and economic effeciency in 4 different patterns (1:2, 2:2, 2:3 and 2:4) of sweet corn-soybean intercropping. The results showed that except for 1:2 row sweet cornsoybean intercropping, the other modes all had intercropping dominance. The 2:4 row sweet corn-soybean showed the highest yield advantage among them. This pattern had high land equivalent ratios (1.15-1.49) and the positive increments of yields were 1372.82-6430.75 kg/hm2 comparing with sweet corn monocuhure. In terms of the yields, the mode of 2:4 was the ideal pattern, which had the highest yield advantage.