都江堰鹅观草在渝西地区的引种研究

Intorduction of Roegneria kamoji Dujiangyan in Western of Chongqing region

本试验以国审鹅观草(Roegneria kamoji)品种赣饲1号为对照材料,对引进品种都江堰鹅观草在渝西地区的生产性能和适应性等进行了综合比较分析。1年的品种比较试验表明,都江堰鹅观草适宜在重庆荣昌试验点生长,未发现严重病虫害,相反对照品种患锈病严重;在生产性能方面,都江堰鹅观草的生育期为251d,较对照(244d)晚7d,持久性更好;在高度方面,都江堰鹅观草较对照高5.03cm,茎叶比稍高于对照;在干草产量方面,都江堰鹅观草总产量表现出明显的优势,干草产量为1 761.69kg·hm-2较对照(1 512.12kg·hm-2)增产16.50%。综上所述,都江堰鹅观草在试验点抗病虫性强,长势好,生育期晚,产草量高,适应该地区生态条件,作为优质牧草种植的潜力较大。

Taking state approved Roegneria kamoji cv. Gansi No. 1 as control, a comprehensive comparative analysis on production performance and adaptability of introduced cultivar R.kamoji cv. Dujiangyan in Western Chongqing region was conducted in this study. The results of one-year variety test showed that, there was no serious disease and pest on R.kamoji cv. Dujiangyan, while serious diseases and pests were observed on control. R.kamoji cv. Dujiangyan is suitable to be cultivated in test point. To production performance, the growth period of R.kamoji cv. Dujiangyan is 251 d, which is 7 d longer than that of control（244 d）. R.kamoji cv. Dujiangyan has a better production persistence than control. The plant height of R.kamoji cv. Dujiangyan is 5 cm higher than that of control, and its stem-leaf ratio is also slightly higher than that of control. Hey yield of R.kamoji cv. Dujiangyan is 1 761.9 kg·hm-2, which is increased by 17.82%, compared with control（1 512.12 kg·hm-2）. Compared with control, R.kamoji cv. Dujiangyan has an obvious advantage on total yield. Since R.kamoji cv. Dujiangyan has merits of high resistance to diseases and pests, well-growing, long growth period, and high hey yield, it suitable to be cultivated in the study area and has great potential to become a high-quality forage.