草畜平衡管理系列研究(5)——牧草产量月动态变化

Animal demanding-feed availability balance control series studies 5——herbage yield monthly change

基于在锡林郭勒和呼伦贝尔等草原地区所获得的草地生产力监测数据,介绍了获取草地牧草产量月动态系数的方法。对不同类型草地以及不同地区同一类型草地上的牧草产量月动态进行了比较。检测了不同放牧压力对牧草产量月动态的影响。结果表明,牧草产量的月动态具有相对稳定的特点。各类草地以及不同放牧压力下牧草产量消长的趋势较为一致。大多数草地的牧草最高产量出现在8月份。基于我国北方主要草原地区的气候相似性,本研究介绍的获取草地牧草产量月动态系数的方法以及部分系数值可以推广应用到其他类似的地区。

Based on the grassland primary production data obtained from Xilinguole League and Hulunbier League, the paper introduced the calculation method for herbage yield monthly dynamic coefficient. Herb age production dynamic changing patterns in different types of grasslands and in different regions were compared. The changing patterns under different grazing pressures were also examined. It was showed that herbage yield monthly changing patterns were similar in different situations. In most cases, the high est herbage yield occurred in August. In considering the similarity of climatic features in different pastoral regions in northern China, it was recommended that the method of calculating herbage yield dynamic coefficient introduced in this paper could be applied to more widespread regions in northern China. Some coefficients deduced from this paper could even be directly adopted by other regions with similar climate feature.