干旱地区优良牧草引种试验初探

[目的]筛选适合青海东部干旱地区人工草地种植的优良牧草品种。[方法]探索灌溉和旱作条件下不同牧草品种的生长高度、产量和越冬率。[结果]红豆草、杂种苜蓿、苛刻冰草在灌溉条件下的生长速度显著高于干旱条件下。品种间比较,灌溉条件下红豆草和杂种苜蓿高度较高,红豆草、杂种苜蓿、扁蓿豆等豆科牧草产量较高,苛刻冰草、圆柱披碱草、扁蓿豆、杂种苜蓿等越冬率较好;旱作条件下,红豆草和杂种苜蓿高度较高,杂种苜蓿产量较高,杂种苜蓿越冬率较好。[结论]在青海海东地区建立旱作人工草地,播期应在雨季并采取雨后播种的方式。在旱作条件下入选的品种为杂种苜蓿,在灌溉条件下入选品种为杂种苜蓿、圆柱披碱草、苛刻冰草、扁蓿豆。

A Primary Introduction Experiment on High Quality Herbage in Arid Area

[Objective]The study aimed to screen high quality herbage varieties which were suitable to planted in arid area in the east of Qinghai province.[Method]The growth height,yield and winter survival rate of different varieties were studied under dry land and irrigation condition,respectively.[Result]The growth rate of Onobrychis viciaefolia Scop,Medicago variacv caoyuan No.2 and Agropyron cristatumcv.kir planted under irrigation condition were significantly higher than under dry land.The growth height of Onobrychis viciaefolia Scop and Medicago variacv caoyuan No.2,the yield of Onobrychis viciaefolia Scop,Medicago variacv caoyuan No.2 and Melilotoides ruthenica(L.) and the winter survival rate of Ezym ascyindricusxd,Agropyron cristatumcv.kir,Melilotoides ruthenica(L.) Sojak and Medicago variacv caoyuan No.2 were higher among different varieties under irrigation condition.The growth height of Onobrychis viciaefolia Scop and Medicago variacv caoyuan No.2,the yield and winter survival rate of Medicago variacv caoyuan No.2 were higher among different varieties under dry land condition.[Conclusion]The results showed that the sowing time should be in raining season in in Haidong area,Qinghai province.Medicago variacv caoyuan No.2 could be sowed under dry land condition.Medicago variacv caoyuan No.2,Ezym ascyind ricusxd,Agropyron cristatumcv.kir and Melilotoides ruthenica(L.) Sojak could be sowed under irrigation condition.