雁北赖草在黄土高原的生产性能及生物学特性

Biological characteristics and productivity of Leymus secalinus ‘Yanbei’ in Loess plateau

为鉴定评价栽培驯化后的新品系雁北赖草(Leymus secalinus'Yanbei')在黄土高原地区的生产性能及生物学特性,选取野生赖草、农菁4号羊草(L.chinensis'Nongjing No.4')作对照,在山西省太谷县山西农业大学(动物科技学院试验站草业科学系)试验地进行为期3年的品比试验。结果表明,雁北赖草干草产量最高,3年平均为10125kg·hm^-2,株高达109cm,显著高于其他参试种(P<0.05);种子产量为145kg·hm^-2,比野生赖草高56.4%;雁北赖草的叶长最长,蛋白质含量较高,为9.46%。综合所有的测试指标,用灰色关联度法系统分析,得出参试种在山西黄土高原地区的综合品质排序为雁北赖草>右玉居群>浑源居群>农菁4号羊草。

This study was conducted to evaluate new lines of Leymus secalinus 'Yanbei' for their production performance and biological characteristics.Wild L.secalinus and L.chinensis 'Nongjing No.4 ' were selected as controls,and various comparison experiments were conducted for 3 years at the experimental site of Shanxi Agricultural University (Animal Science and Veterinary Medicine experimental station at the Practaculture Science experimental site),Taigu County,Shanxi Province.The results showed that the yield of L.secalinus 'Yanbei' was the highest,with an average yield of 10 125 kg·ha^-1 in 3 years and 109 cm in the vegetative shoot,which was significantly higher than that of other varieties (P < 0.05).Seed production was 145 kg·ha^-1,which was 56.4% higher than the wild species.L.secalinus 'Yanbei' showed the longest leaf length and protein content (9.46%).All test indices were analyzed using the grey relational degree method.The characteristics of the test varieties were: L.secalinus 'Yanbei'> wild L.secalinus 'Youyu'> wild L.secalinus 'Hunyuan'> L.chinensis 'Nongjing No.4'.