水分处理对草坪草地下植物量的影响

采用大田试验和室内分析相结合的方法,探讨了灌溉与草坪地下植物量的关系,结果表明:3种草坪草中,高羊茅Festuca arundinacea cv.Pixie对水分的敏感性最弱;地下植物量最大值出现在春季,秋季为根系的恢复生长期;轻度水分胁迫有助于根系的生长,充足水分条件并不利于高羊茅根系生长;根系的空间分布呈乘幂关系.

Study on relationship between irrigation and underground biomass

By carrying out the held test and Oata analysis, stuoylng on retationship between riirigation and underground biomass was studied, the main contents of the study were as follows- Tall rescue is the most drought--enduring, while perennial ryegrass is the worst in three turfgrasses; The highest root biomass was in spring and winter was the recovering period. Light soil force in water conduced to the root growth. But enough water was harmful for the root of tall rescue. The distribution of underground root showed exponent relation.