科右前旗牧草发育规律及发育期预报服务

The Development Rule and Development Period Forecast Service of Forage Grass in Keyouqian Banner

选取科右前旗乌兰毛都牧草观测站和察尔森牧草观测站2004—2015年气象资料和2016—2021年牧草资料,分析了牧草生育期的变化特征,并研究了牧草的返青期、开花期、黄枯期与气候变化之间的关系。研究表明,温度是影响天然牧草返青的决定性因素,在本研究中降水量对察尔森灯芯草蚤缀的开花期和察尔森2种牧草黄枯期显著相关,而与返青期变化无相关性。温度的季节变化是影响科右前旗2个地区天然牧草生育期变化的主要因素,降水量对开花期和黄枯期产生了一定的影响。40 cm地温与乌兰毛都2种牧草的开花期和黄枯期均显著相关,与察尔森2种天然牧草的黄枯期显著负相关。

Selected meteorological data from the Ulan Maodu Forage Observation Station and the Chalsen Forage Observation Station in Keyouqian Banner from 2004 to 2015 and herbage data from 2016 to 2021 to analyze the changes in the growth period of herbage,and studied the relationship between the returning green period,flowering period,yellow withering period of herbage and climate change.Research has shown that temperature is the determining factor affecting the rejuvenation of natural herbage.In this study,precipitation was significantly correlated with the flowering period of flea infestation and the yellow withering period of the two types of herbage,but not with the changes in the rejuvenation period.The seasonal variation of temperature was the main factor affecting the growth period of natural herbage in the two regions of Keyouqian Banner,and precipitation plays a certain role in the flowering and yellow withering periods.There was a significant correlation between the 40 cm ground temperature and the flowering and yellow withering periods of the two types of forages in Ulan Maodu,while there was a significant negative correlation with the yellow withering periods of the two natural forages in Chalsen.