鄂尔多斯天然草原牧草产量及营养成分研究

Study on the yield and nutrients of grassland in Erdos

利用鄂尔多斯地区4个监测站2005~2016年的气象资料、天然草原牧草产量和营养成分监测数据,分析对比各个地区的牧草产量、营养成分以及两者和气象条件的关系。结果表明:乌审旗天然草原牧草的产量显著高于杭锦旗、鄂托克旗和鄂托克前旗。牧草营养成分最高在鄂托克前旗,其次为杭锦旗,最低的在乌审旗,相关分析结果显示,生长季的降水量与牧草的鲜重、干重和干鲜比均达到极显著的相关关系,相关系数分别是0.551,0.525和-0.355。牧草营养成分中的粗脂肪含量与生长季降水量呈极显著的负相关,日照时数与粗纤维含量呈现显著正相关,而与无氮浸出物的含量呈显著负相关。

Based on 2005 - 2016 meteorological data,grassland yield and nutrient composition monitoring data of 4 stations in Erdos,the current research analyzed and compared the yield and nutrient composition of each area alongside the relationship with meteorological conditions. The results showed that the highest herbage yield was achieved in Wushen Banner which produced significantly more than Hangjin Banner,Etuoke Banner and Etuoke Front Banner. Nutrient contents of natural herbage in Etuoke Front Banner were the highest,followed by Hangjin Banner while the lowest were in Wushen Banner,followed by etuoke Banner. Results from correlation analysis showed thatthe precipitation in the growing season significantly correlated with the fresh weight,dry weight and dry and fresh ratio of herbage andthe correlation coefficients were 0. 551,0. 525,and-0. 355. There was a significant negative correlation between crude fat and precipitation in growing season,sunshine hours showed a significant positive correlation with Crude fiber,but significantly negatively correlated with the Nitrogen-free extract.