刈割对青海草地早熟禾坪用性的影响初探

Preliminary study on the influence of mowing on turf-used characteristic of Poa Pratensis L.cv.QinHai

对青海草地早熟禾Poa pratensiscv.QinHai进行多次刈割试验,结果发现:两样地中各处理下的根扎速率差异并不显著(α<0.05),西宁样地的根扎速率明显高于果洛样地(F>F0.05);就分蘖值而言,各处理间差异并不显著(α<0.05),果洛样地与西宁样地之间也无显著差异(F<F0.05)。各因素对于分蘖值的影响不大,但对于分蘖速率却有着较为明显的影响,低茬高频(留茬5 cm、修剪频度7 d/次)的管理措施有助于草坪草更好的分蘖,其分蘖速率略高于高茬低频下。

Many times of mowing experiments on Poa Pratensis L. cv. QinHai showed that rooting speed had no significant difference in two sample areas. No remarkable difference was observed on tillering value among treatments and sample areas. Different treatment affected tillering rate obviously. Low mowing at high frequency （mowing at 5 cm, every 7 days） was helpful for tillering.