四季放牧草地营养类型与季节变化特征研究

发布时间：2018-05-16 05:16

本文选题：季节牧场 + 草地类型　；参考：《中国草地学报》2017年01期

【摘要】：以新疆昭苏县域的沙尔套山天然草地为研究区,对四季放牧草地的营养类型进行划分,并对各季节放牧地利用期内的草地营养成分变化特征等进行了分析。结果表明,沙尔套山四季放牧草地植被可分为4个大类(包括亚类),6个主要草地型,通过对不同草地类型草群的营养成分测定结果所划分出的草地营养类型为氮碳型和氮型,氮碳型草地占主体地位。各季节放牧地因分布区草地类型组合、放牧时期和草群生长阶段等不同,在放牧利用期内草地营养成分组合形式发生变化,实际的季节放牧草地营养类型是:春季利用期内草地存在3个营养类型,经加权平均值计算营养类型为氮碳型;夏季利用期内草地营养类型为氮碳型;秋季利用期内存在3个草地营养类型,经加权平均值计算营养类型为碳氮型;冬季利用期内存在3个营养类型,经加权平均值计算其营养类型为碳氮型。
[Abstract]:Taking the natural grassland of Shaertuoshan in Zhaosu County, Xinjiang as the research area, the nutrient types of grazing grassland in the four seasons were divided, and the variation characteristics of the nutrient composition of the grassland during the utilization period of the grazing land in each season were analyzed. The results showed that the vegetation of four seasons grazing grassland in Shaertuoshan Mountain could be divided into 4 types (including subgroup and 6 main grassland types). The nutrient types of grassland were nitrogen carbon type and nitrogen type by measuring the nutrient composition of different grassland types. Nitrogen and carbon grassland dominated. The nutrient composition forms of grazing land changed during grazing and utilization period because of different grassland type combinations, grazing period and grass growth stage in different seasons. The actual nutrient types of seasonal grazing grassland are as follows: there are three nutrient types in the grassland during the spring utilization period, and the nutrient type is nitrogen and carbon type calculated by weighted average value, and the nitrogen and carbon type in the summer utilization period. There were three types of grassland nutrients in autumn and three types of nutrients in winter, which were calculated by weighted average.
【作者单位】：石河子大学动物科技学院;
【基金】：国家农业部公益性行业(农业)科研专项经费项目(201303062)
【分类号】：S812.3

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