Effects of Planting Density and Row Spacing on Plant Productivity of Autumn Forage Sweet Sorghum in Hebei Province

摘要

[Objective]This study was conducted to investigate the relationship between each of planting density and row spacing and plant productivity of forage sweet sorghum planted in autumn idle land. [Methods]Using split-plot experiment design experiment method and LSD method of IBM. SPSS. Statistics. v22 statistics software,the effects of planting density and row spacing on plant productivity of forage sweet sorghum planted in autumn idle land were compared. [Result]The results showed that the planting density and row spacing had important influences on plant productivity of forage sweet sorghum planted in autumn idle land. Moreover,the optimal combination of plant productivity for A_1B_4,i. e.,under the combination of the planting density of 7. 5 × 104 plants/hm^2 and the row spacing of40 cm,the fresh weight and dry weight per plant were 654. 37 and 147. 11 g/plant,respectively.[Conclusion]The results provided a theoretical basis for the production of forage sweet sorghum in autumn idle land.