草坪地下生物量与坪用性状的关系

Relationship between underground biomass and turf character.

该研究通过对冷季型混播草坪 (高羊茅 +草地早熟禾 )地下生物量的测定 ,结合草坪密度和抗病性的观测 ,研究了草坪地下生物量的空间分布和季节变化 ,同时对草坪地下生物量与草坪密度变化和抗病性的关系作了一些探讨 .结果表明 :春季 (4～ 6月 )草地早熟禾地下生物量的减少值与草坪密度的增加值呈显著正相关 ,7月草坪地下生物量与其抗病性呈显著正相关 .说明草坪地下与地上生长的密切关系 ,证明了在草坪养护中注重根系培育的重要性 .

By measurement of underground biomass and observation and rating of turf density and disease resistance of cool season turf mixture (tall fescue+Kentucky bluegrass), the distribution and seasonal change of turfgrass underground biomass was studied. Meanwhile, the relationship between. underground biomass and turf density change, disease resistance was also studied. The decrease of underground biomass and turf density increase of Ky. bluegrass turf had shown positive relationship in spring(April June). Underground biomass and disease resistance had shown positive relationship in July, which means close relationship between above ground part and underground part of turfgrass, and demonstrates the importance of root cultivation in turf management.