马铃薯与玉米套种能充分利用土地资源和自然条件,提高单位面积产量。但目前,中国西南山区套种方式繁多,究竟何种套种方式最好,过去缺乏系统研宄。1988～1989年我们选择不同海拔高度,不同生态条件的地区设置试验点进行试验,目的是找出最佳套种方式。 1 试验经过试验地点是鄂西山区,分设低、中、高海拔3个试验点。各试点1988年气候正常,1989年多雨高湿,导致晚疫病流行。从自然条件看我国西南山区具有一定的代表性。试验设计包括了西南山区目前采用的各种套种方式,均以双行马铃薯与双行玉米套 Intercropping of potatoes and corn can make full use of land resources and natural conditions and increase yield per unit area. However, at present, there are many kinds of intercropping methods in mountainous areas in southwest China. What kind of interplanting method is the best? In the past, there was a lack of systematic research. From 1988 to 1989, we chose test sites in different areas with different altitude and ecological conditions to test the best way of intercropping. A test site after the test is western Hubei mountain, divided into low, medium and high altitude three test points. The pilot climate in 1988 normal, rainy and humid in 1989, leading to epidemic late blight. From the View of Natural Conditions in Mountainous Areas in Southwest China Has a Certain Representative. The experimental design includes a variety of intercropping methods currently used in mountainous areas in the southwest, both double rows of potatoes and double corncobs