In order to investigate the effects of different row spacing and density on the biomass accumulation of single spring wheat plant,with the high-density type cultivar,Kehan 16 as material,six treatments with two row spacing (10,15 cm,C1 and C2) and three planting densities of basic seedlings (600× 104,750 × 104,900 × 104 plants · hm-2,B1,B2,B3) were designed and conducted in 2013 growing season.The biomass accumulation and yield components of individual plant were analyzed among different row spacing and density.The results showed that dry matter accumulation of the first to the third internode from ear was the highest under the treatment of B1C2.The dry matter accumulation in stem and sheath of individual plant was reduced with the increase of row spacing.The contribution of biomass accumulation in the first internode from the top to spike was the highest.The stem length was improved with the increase of row spacing,and the treatment of B3C2 gave the highest stem length (73.73 cm).The density of spikelet under B3C2 was the lowest,and which were improved by 6.76％ and 4.77％,respectively,under the control and the treatment of B3C1.The 1 000-grain weight and yield under the treatment of B3C1 was the highest,which improved 1 000-grain weight and yield by 0.71％ and 13.13％ compared to the control,respectively.The results indicated that the optimal planting conditions for Kehan 16 are B3C1.
Spring wheatRow spacingPlant densityDry matterYield
NETL
NSTL
万方数据
维普
