Research on Planting Mode of Double Strains in One Hole of Maize

To clarify the best planting mode,using completely randomized block design in the field,with different planting density of 7 planting modes of maize,the effects of different planting modes on photosynthetic performance of maize populations,dry matter accumulation and yield were studied. The results indicated that the population structure of maize was improved,inter plant competition was reduced,individual growth and development was promoted,the leaf area index and photosynthetic efficiency were higher,the dry matter accumulation and yield were the maximum,and the yield increasing effect was obvious under the planting mode of wide and narrow row double planting,the wide row was 70 cm,the narrow row was 40 cm,the hill spacing was 40 cm,the planting density was 90 750 plant / hm2,it was the optimal planting pattern for maize,in which the yield could reach 11 536. 35 kg / hm2.