Study on the Relationship of Seedling Density and Line Spacing to Leaf-stem Ratio, DW/FW Ratio and Grass Yield of Forage Sweet Sorghum.

[ Objective] The aim was to optimize the configuration of seedling density and line spacing of forage sweet sorghum (Sorghum bicolor (L. ) Moench) and explore its high-yield cultivation techniques. [Methods] Effects of such two influencing factors as line spacing ad seedling density on the leaf-stem ratio, DW/FW ratio and grass yield of forage sweet sorghum were analyzed by using split-plot experiment design experiment method and LSD method of IBM. SPSS. Statistics. v22 statistics software. [ Results] Seedling density ad line spacing had no obvious effect on the lea-stem ratio and DW /FW ratio of forage sweet sorghum but had obvious influences on the grass yield. Moreover, the optimal combination of seedling density and line spacing for high yield of forage sweet sorghum was A2B4, that is, seedling density was 225 000 plants/hm², and line spacing was 40 cm. [ Conclusions] The results provided a theoretical basis and technical support for high-yield cullivation techniques of forage sweet sorghum. [ABSTRACT FROM AUTHOR]