【作者】 王敏；

【导师】 卫智军；

【作者基本信息】 内蒙古农业大学 ， 草业科学， 2014， 硕士

【摘要】 季节性休牧是草地适应性管理的重要内容,本试验于2010-2013年在内蒙古短花针茅荒漠草原研究了季节性休牧对草地植物群落特征和植物营养物质的影响,比较了全年放牧、春季放牧、夏季放牧和秋季放牧下的群落特征和植物营养物质的变化,结果如下：1.季节休牧下主要植物种群特征有稳定较高值,有利于提高群落特征的各项指标,春季休牧+夏季重牧+秋季重牧处理表现更好,春季休牧+夏季轻牧+秋季轻牧处理区主要植物地上生物量值较高。2.季节休牧使草地功能群的盖度有较高稳定值,特别是在春季重牧+夏季重牧+秋季休牧处理,同时季节休牧对群落及功能群的地上生物量有促进作用,保证总群落的地上生物量处于稳定状态。3.季节性休牧的处理有利于提高植物群落的均匀度,降低丰富度,提高多样性,其中春季休牧+夏季轻牧+秋季轻牧处理效果最好。4.春季休牧处理有利于粗蛋白、粗脂肪、粗灰分等植物营养物质的积累,能够满足放牧家畜数量与植物营养含量之间的平衡。5.春季休牧+夏季轻牧+秋季轻牧和春季休牧+夏季重牧+秋季重牧的调控方式更适合实际生产。更多还原

【Abstract】 Seasonal animal husbandry is the important content of the grass adaptive management.The test studies the effect of seasonal break-pastoral on community characteristics and nutrient content of Stipa breviflora in Inner Mongolia during2010-2013. Compares the annual spring grazing, grazing and grazing, the summer autumn grazing community characteristics and the change of plant nutrients.The results are as follows:1. The main plant population characteristics have higher stable value with seasonal break-pastoral. Seasonal break-pastoral can improve each index of community characteristics. Break-pastoral in spring+heavy grazing in summer+heavy grazing in autnmn are better, above-ground biomass community of main plant is higher with the treatment of break-pastoral in spring+light grazing in summer+light grazing in autumn.2. Seasonal break-pastoral can make the coverage of functional groups has a higher stability value, especially in the treatment of heavy grazing in spring+heavy grazing in summer+break-pastoral in autnmn. At the same time, seasonal break-pastoral can also improve above-ground biomass of community and functional groups. The mutual compensation functions of functional group can ensure above-ground biomass of community in a stable state.3. With the help of seasonal break-pastoral, the uniformity and diversity of plant community is improved and the richness is reduced.4. The spring break-pastoral is better for accumulation of plant nutrients, such as crude protein, Crude fat and crude ash, which can meet the balance between the livestock number and plant nutrition content.5. The regulating the way of break-pastoral in spring+light grazing in summer+light grazing in autumn and break-pastoral in spring+heavy grazing in summer+heavy grazing in autumn is more suitable for practical production.更多还原