不同载畜量对羊草草地植被和家畜生产性能的影响

Effect of Different Grazing Capacity for Vegetation and the Domestic Animal Production in Chinese Wildrye Grassland

通过放牧强度对羊草草地植被和家畜生产影响的研究,放牧强度不同程度地改变了土壤养分状况,三种放牧强度下草地植物群落的高度、密度、盖度、频度、可食牧草产量无明显变化,组间差异不显著(>0.05)。放牧强度影响羯羊体重。羯羊日增长量随放牧强度减小而增加,羯羊生长量以中组为最佳,中组分别比低组、高组提高30.4%、17.6%,平均日生长量组间差异显著(<0.05);牧草干物质的采食量影响羯羊生长量,而日采食量中粗蛋白较干物质对羯羊生长的影响更为重要。草地放牧以中放牧强度(6只/hm2)为最佳。

Through herds the intensity to the aneurolepidium chinense lawn vegetation and the domestic animal production influence research, herded the intensity varying degree to change the soil nutrient condition, three kinds herded the intensity land-flora plant community, the density, the degree of cover, the frequency, may eat the forage grass output highly not to have the obvious change, the group the difference are not remarkable （p〉0.05）. Herds the intensity influence wether body weight. The wether date growth along with herds the intensity to reduce but increases, wether growth quantity take center group as best, center the component compared to the low group, the high group do not enhance 30.4%, 17.6%, the mean diurnal growth quantity group the difference is remarkable （p〈0.05）; The forage grass dry matter archery target picks the food quantity influence wether growth quantity, but the date picks in the food quantity the thick protein to compare the influence which the dry matter confrontation wether grows to be more important. The lawn herds take the center herds the intensity （6/hm^2） as best.