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| | Soda solonetzic solonechak is of wide distributed and large | | 苏打碱化盐土在松辽平原分布广,面积大,仅吉林省西部有盐渍土草原139万公顷,其中部分酸化盐土失去利用价值,是目前发展畜牧业主要障碍。为筛选耐盐抗碱品优的野生牧草品种、建立人工草场,恢复和改良苏打碱化盐土草原植被,我们对大安县苏打碱化盐土地进行了调查。本文就植被群落中四个主要优势种九个类型的分布特点、土壤盐碱含量状况、两个野生牧草品种——星星草、野大麦正常生长的耐盐抗碱能力等进行了分析。 | | 文摘来源 | | Resistance of 50 grass species of 23 genera belonging to 7 tribes towheat stripe rust, barley stripe rust, common leymus (Leymus secalinus) stripe rust and tangut wildryegrass (Elyrnus tangutorum) stripe rust was evaluated. The results of artificial inoculation indicated that all infected grasses belong to Tritceae except Puccinellia tenuiflora, and the resistance is different between genera of species. Hordeum jubatum, Eremopyrum orientale and Elymus excelsus were all susceptible to most of the isolates. T... | | 用小麦条锈菌、大麦条锈菌、赖草(Leymus secalinus)条锈菌和麦草(Elymus tangutorum)条锈菌的代表菌系,采用人工接种方法,对7个族的23属50种禾草的抗条锈性进行了鉴定。结果表明,感染条锈病的种类除星星草(Puccinellia tenuiflora)外均属小麦族。小麦族不同属、种抗条锈性有差异,芒颖大麦草(Hordeum jubatum)、东方早麦草(Eremopyrum orientale)和肥披碱草(Elymus excelsus)对大部分菌系均表现感病反应,赖草属(Leymus)除赖草高度感染赖草菌系外均较抗病,较抗病的还有鹅观草属(Roegneria)、沙生冰草(Agropyron desertorum)、老芒麦(Elymus sibiricus)和Thinopyrum scirpeum。不同条锈菌对不同属,种禾草的致病性有显著差异。 | | 文摘来源 | | Effects of Puccinellia tehuifiora on improving alkaline spots of grasslands were elaborated based on experiments and practical experience. The technical points of cultivation and field management were summarised. | | 本文根据实验和推广实践,简要阐述了种植星星草改良碱斑草原的效果,并总结了星星草种植技术和管理需要注意的环节。 | | 文摘来源 | |   | | << 更多相关文摘 |
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