三种暖季型草坪秋季追播多年生黑麦草的效果比较

Effects of Overseeding with Lolium perenne L. on Three Warm-season Turf in Spring

对杂交狗牙根、沟叶结缕草和钝叶草三种暖季型基础草坪秋冬季追播多年生黑麦草的效果进行了研究。结果表明,冬前钝叶草追播草坪在成坪速度和草坪质量方面都极显著差于杂交狗牙根与沟叶结缕草追播草坪;狗牙根追播草坪的成坪速度和草坪质量快于和优于沟叶结缕草追播草坪,或二者差异不显著。返青阶段,钝叶草返青推迟时间最短,但返青草坪质量最差;杂交狗牙根与沟叶结缕草草坪在这两方面均无显著差异。

The effect of overseeding with Lolium perenne L. on Bermudagrass turf , Matrellagrass turf and Augustinegrass turf in spring in Nanjing was compared. Results showed that： The establishment rate and quality of Bermuda overseeding turf and Matrella overseeding turf were significantly faster and better than that of Augustine overseeding turf before winter; the Matrella overseeding turf had a faster establishment rate and better turf quality than Bermuda overseeding turf only in the treatment with the seeding date of October 20, and seeding rate of 20g/m2. In all other treatments, the establishment rate and turf quality of Bermuda overseeding turf were faster and better than that of Matrella overseeding turf. In the green retur- ning stage, overseeding delayed the three warm-season turf green returning, but the degree was different. Augustine turf was delayed most, and its turf quality was the worst; the green returning time and the turf quality in the green returning stage of Bermuda turf and Matrella turf were not significantly different.