遮荫对早熟禾产量因子的影响

Effect of the shadingon bluegrass yield

测定了草地早熟禾5个不同品种在不同遮荫处理下的单株成穗数、单穗粒数、千粒质量及产量。结果表明:遮荫条件下品种润草1号和09-2早熟禾单株成穗数、单穗粒数、千粒质量及产量性状均表现较为优良,表明润草1号和09-2是较耐荫的品种。其中,"润草1号"在遮光率77%时单株产量与其他品系差异显著,在遮光91%仍有少量抽穗。

The paper measured the indicators of ear number per plant,grain number per plant,1 000 grain weight and yield of several Turfgrass under different shading levels.The results showed that all indictors of Runcao No.1 and No.09-2 under shading were better than that of other species.The two species could be the considered as shade tolerant turf grass.Among them,Runcao No.1 had the better performance than other spe-cies when the shading rate reached more than 70%,even when the shading rate was more than 90%,there were still a few heading.