A split-plot experiment design is used in this study,that the density is given priority to set 4 densities (90000 plants/hmn2,105000 plants/hm2,120000 plants/hm2,135000 plants/hm2),and three hybrid waxy sorghum varieties are set as deputy district,with a total of 12 treatments,each 14m2 of plot area,and 3 repeats.Effect of planting density on the sink and source relationship of hybrid waxy sorghum is studied.The research results showed that the leaf area index of every growth period and the source production capacity are significantly correlated with density,and increasing planting density is the key to a higher source.Increase of the density can increase the effective sink storage capacity to a certain extent.Therefore,reasonable density is the key measure to realize coordination of the library source.At high densities,to increase grain number per ear is the key measure to further improve effective sink storage capacity.Selection of varieties with strong source and large sink,increasing planting density reasonably are an effective way for the production of hybrid waxy sorghum in the southeastern Sichuan.
Planting densityWaxy sorghumRlationship of sink and source
NETL
NSTL
万方数据
维普
