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选取新疆乌鲁木齐市牧业气象试验站2004—2015年早熟禾(Poa annua)、黄芪(Astragalus membranaceus)、老鹳草(Geranium wilfordii)、老芒麦(Elymus sibiricus)、千叶耆(Achillea millefolium)5种天然牧草物候期资料和同期气象资料,采用统计分析法分析了物候期与气候要素间的关系。结果表明,5种牧草的返青期基本一致,开花期有提前有推迟,黄枯期普遍推迟,其中豆科牧草的黄枯期提前;气温是影响牧草春季物候期的重要因素,返青期和开花期的早晚与其前1~2个月气温的负相关程度较高,黄枯期与气温存在正相关,其中老芒麦的黄枯期与其前1~2个月的日照时数负相关程度较高。
The Poa annua, Astragalus membranaceus, Geranium wilfordii, Elymus sibiricus, Achillea millefolium 5 of Urumqi animal husbandry weather station in Xinjiang Autonomous Region were selected. Based on the phenophase data of natural grasses and the meteorological data of the same period, statistical analysis was used to analyze the relationship between phenology and climatic elements. The results showed that the turning green periods of the five species of grass were basically the same, the early flowering phase was postponed and the yellow dead phase was generally delayed. The yellow period of leguminous forages was ahead of schedule. Air temperature was an important factor affecting forage phenophase during spring, The negative correlation between the morning and evening temperature and the temperature in the previous one to two months was higher. The yellowish dry period had a positive correlation with the air temperature. The negative correlation between the yellow dry season and the sunshine duration in the first 1-2 months high.