毛乌素沙地荒漠化草原四季产草量的测定及载畜量的计算

The determination of four-season grass yield and stock capacity in Mu Us desert steppe

天然草地是内蒙古自治区畜牧业赖以生存和发展的基础,是绿色畜牧业发展的有力保障。为了合理利用和科学规划毛乌素沙地荒漠化草原草地资源,试验对毛乌素沙地三种不同草地类型的四季产草量进行测定,并计算毛乌素沙地荒漠化草原的理论载畜量。结果表明：春季温性荒漠草原平原丘陵荒漠草场的产草量最高,干物质产草量为624.45 kg/hm^2;夏季和秋季低平地盐化草甸草场产草量最高,干物质产草量分别为1 551.60 kg/hm^2和1 717.65 kg/hm^2;冬季温性荒漠草原沙地荒漠草场产草量最高,达525.60 kg/hm^2。低平地盐化草甸草地、温性荒漠草原平原丘陵荒漠草地、温性荒漠草原沙地荒漠草地的全年理论载畜量分别为97.67 hm^2/100只、238.73 hm^2/100只和181.20 hm^2/100只。

The natural grassland is the foundation on the survival and the development of animal husbandry in Inner Mongolia Autonomous Region,and also the powerful safeguard of the development of green animal husbandry. For purpose of rational utilization and scientific planning for grassland resources in Mu Us desert steppe,four-season grass yield was determined in three different types of grassland of Mu Us desert in this experiment,and theoretical stock capacity was calculated in Mu Us desert steppe. The results showed that grass yield reached the top in spring season in warm desert plain-hill grassland,with the dry matter content of 624. 45 kg/hm^2. In summer and autumn seasons,grass yield was the peak in low ground saline meadow grassland,with the dry matter content of 1 551. 60 kg/hm^2 and 1 717. 65 kg/hm^2 respectively. In winter season,grass yield was the highest in warm desert sand grassland,with the dry matter content of 525. 60 kg/hm^2. Theoretical annual stock capacity in low ground saline meadow grassland,warm desert plain-hill grassland,warm desert sand grassland,were 97. 67,238. 73 and 181. 20 hm^2 per100 individuals respectively.