甘南本土优良野生草种驯化研究

Research on Domestication of Indigenous High-quality Wild Grass Species in Gannan

摘要:

为能有效地保护和利用甘南地区的野生草种资源,促进甘南本土草种驯化对于草地生态修复及畜牧业发展的作用。本研究以甘南地区特有的优良本土草种垂穗披碱草(Elymus nutans)和早熟禾(Poa pratensis)为驯化材料,同时引入中华羊茅(Festuca sinensis)和紫花苜蓿(Medicago sativa)作为对照。通过在甘南州合作市的栽培及连续三年的生物学特性观察,结果表明:垂穗披碱草1、2、3龄草地的平均株高、干草产量和种子产量分别为80.53 cm、3 536.67 kg/hm²、25.3 kg/hm²均显著高于其他草种(P<0.01),早熟禾次之。这些结果表明垂穗披碱草和早熟禾是适合甘南高寒区的优良野生牧草,对于促进当地生态保护和可持续发展具有重要意义。

Abstract:

In order to effectively protect and utilize the wild grass resources in Gannan,this study focuses on the domestication of native grass species for the ecological restoration of grassland and the development of livestock industry.The present study took the excellent native grass species of Elymus nutans and Poa pratensis,which are unique to the Gannan region,as the domestication materials,and introduced Festuca sinensis and Medicago sativa as the control materials.Sinensis and alfalfa (Medicago sativa) were introduced as controls,the results showed that the average plant height,hay yield and seed yield of Phyllanthus pratensis at the age of 1,2 and 3 were 80.53 cm,3 536.67 kg/hm² and 25.3 kg/hm²,respectively,which were all significantly higher than those of other species(P<0.01),and Poa pratensis was the second highest.These results indicated that pendulous lacewing and morning glory are excellent wild forage grasses suitable for the alpine region of Gannan,which is of great significance for promoting local ecological protection and sustainable development.