宁夏引黄灌区胡麻套种玉米带型优化研究

对宁夏引黄灌区胡麻套种玉米不同带型的作物产量、生育表现和经济效益进行了研究，结果表明：作物总产与玉米产量呈高度正相关（r＝0．99**），玉米产量与其占地面积比例呈正相关（r＝0．99**）.据此认为在套种条件下，胡麻与玉米的面积比例应以0．60：0．40～0．65：0．35为宜；带宽为2．25m，胡麻1．35m，玉米0．9m的处理B和带宽为2．05m，胡麻1．35m，玉米0．7m的处理A为较佳带型。

Studies on the strip pattern optimization of relay intercropping of flax and maize in the irrigated area of Ningxia

A relay intercropping of flax and maize with different strip pattern in a field experiment have been used in the irrigated area of Ningxia were studied. The characters and yield of the two crops, and the economic effect of the crops were analysed. The results showed that the total yield of the crops was highly correlated with the yield of maize (r=0. 99 ), and the yield of the maize was highly correlated with the area rate of the maize in relay intercropping, too (r=0. 99 ). According to the above results, it was thought that the area rate of flax and maize in the relay intercropping should be 0. 60: 0. 40 ~ 0. 65: 0. 35, and optimal patterns should be pattern B(2. 25m, 1. 35m:0. 9m) and pattern A (2. 05m, 1. 35m: 0. 7m).