立体多熟种植中玉米产量是实现其高产的关键。通过对其关键生育期根系、株高、叶面积、干物质积累、净光合强度及其果穗经济性状等多年的研究 ,表明 ,其增产的主要原因是采用大小行种植的四行玉米中存在着 3个边行优势。指出 ,选择优良品种 ,采用机械覆膜种植技术 ,提高玉米整齐度 ,是充分发挥其边行优势的有效措施。 Three-dimensional multi-cropping corn production is the key to achieving high yield. Through years of research on its key growth stages such as root system, plant height, leaf area, dry matter accumulation, net photosynthetic intensity and its ear economic traits, the main reason for its increase is that there are four rows of corn planted in rows and columns 3 edge advantages. Pointed out that the selection of fine varieties, the use of mechanical film planting techniques to improve the uniformity of corn, is to give full play to its edge line of effective measures.