草地早熟禾与高羊茅不同混播比例对草坪质量的影响

在大田条件下,研究了草地早熟禾和高羊茅不同混播比例对草坪质量的影响,以期为北方地区草坪建植提供依据。结果表明:播量一定时,随草地早熟禾比例减小、高羊茅比例增大,草坪成坪速度越快,密度越小,质地越差,颜色越深,地下植物量越大,地上植物量呈先增大后减小的趋势,草地早熟禾∶高羊茅为2∶8处理组合地上、地下植物量均最大。当高羊茅在混播组合中的比例60%后,草坪密度、质地、地上植物量趋于稳定。6种处理组合草坪综合质量从优到劣依次为AFEBCD。综合考虑成坪速度和草坪质量,草地早熟禾和高羊茅混播建坪的比例以2∶8为宜。

Effect of different seeding rate combinations on turf quality between kentucky bluegrass and tall fescue

In the condition of cropland,the paper studied the effect of different seeding rate combinations on turf quality between kentucky bluegrass(P .pratensis )and tall fescue(F .arundinacea)for providing practical ba-sis for mixed sowing turf in the northern China.The results showed that the turf grow faster,the lawn density was smaller,the texture was worse,the color was deeper,the amount of underground biomass was higher and the aboveground biomass was first increased and decreased with the proportion of Bluegrass decreased and tall fescue increased at the same seeding rate.Under the treatment of bluegrass and Tall fescue was 2∶8,the aboveground and underground biomass were highest.When the proportion of tall fescue in mixed sowing combi-nation was higher than 60%,the turf density,texture,aboveground biomass was stabilized.The rank of turf quality of 6 combination was A>F>E>B>C>D.Considering the speed and turf quality,the mixture ratio of kentucky bluegrass and tall fescue should be 2∶8.