Abstract: Aiming at solving the difficulty of overseeding turfgrass in the spring of Zoyia japonica ‘Lantai No. 3’,this study sprayed different concentrations of ‘Henace’ herbicide,to inhibite the growth of Lolium perenne and promote the smooth transition of the Zoyia japonica ‘Lantai No. 3’ overseeding turfgrass in spring. The results showed that 1 500 and 2 000 mg·L^-1 ‘Henace’herbicide had the best effect,from the end of May to the beginning of June,the NDVI index were 0.758 and 0.774,and the Green index were 3.012 and 3.028,which all reached the suitable state of overseeding turfgrass. The density of Zoyia japonica ‘Lantai No. 3’ reached 112.22 branches·dm^-2and 117.44 branches ·dm^-2,and the overseeding turfgrass reached an appropriate state,completing the smooth transition of the overseeding turfgrass.

Key words: Zoyia japonica ‘Lantai No. 3’, Overseeding turfgrass, Herbicide, Spring transition

摘要： 针对‘兰引3号’结缕草(Zoysia japonica ‘Lantai No.3’)交播草坪春季转换困难的难题，本研究通过喷施不同浓度的‘禾耐斯’(Henace)除草剂，以期达到显著抑制多年生黑麦草(Lolium perenne)、促进‘兰引3号’结缕草交播草坪春季平稳转换的目的。结果表明：喷施1 500和2 000 mg·L^-1‘禾耐斯’除草剂效果最好，在5月底～6月初，交播草坪归一化植被指数(Normalized difference vegetation index,NDVI)分别为0.758和0.774，绿色指数(Grass index,GI)分别为3.012和3.028，均达到草坪的适宜状态，‘兰引3号’结缕草的密度分别达到112.22枝·dm^-2和117.44枝·dm^-2，草坪密度达到适宜状态，完成了交播草坪的平稳转换。

关键词: ‘兰引3号’结缕草, 交播草坪, 除草剂, 春季转换