摘 要：
土质温性荒漠作为干旱区具有代表性的典型荒漠类草地,在保护生态环境,发展干旱区草地畜牧业生产中发挥着重要作用。研究选择永昌县花草滩典型土质温性荒漠草地,采用3S技术与传统地面测产、实验室化验分析相结合的方法对该类草地产草量、植被养分含量及放牧家畜营养平衡状况进行分析和评价,并通过调查,了解其产草量及放牧家畜营养平衡状况。这对制定科学合理的生态保护及放牧利用计划具有重要的指导意义,也将为河西走廊乃至西部干旱区类似草地资源的评价以及放牧家畜营养平衡分析提供借鉴和指导。测定分析结果表明:花草滩土质温性荒漠总面积2.53万hm2,可食牧草鲜草产量4 430.03 kg/hm2;花草滩植被属典型荒漠植被,植被灰分和水分含量较高,含钙丰富,而粗蛋白和磷含量较低,除6～10月能满足现有放牧家畜对蛋白质的需求外,冬春季需补饲豆科牧草和饼粕类的蛋白质饲料,且全年需进行磷的补饲。
译 名：
Analysis of Grass Yield in Desert Grassland and Nutritional Balance of Grazing Livestock in Huacaotan of Yongchang County
作 者：
WANG Zi-xiong1,YU Lian-ping1,2,SHI Zhao-guo1(1.Faculty of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,PRC; 2.Gansu Grassland Technical Extension Station,Lanzhou 730010,PRC)
关键词：
temperate desert;3S technology;grazing livestock;nutritional balance
摘 要：
Desert with warm soil properties,as a representative and typical desert grassland in arid area,plays an important role in the protection of ecological environment and the development of grassland animal husbandry production in arid areas.The grass yield,nutrient content of vegetation and nutrition balance of grazing animal in typical desert with warm soil properties in Huacaotan of Yongchang County were analyzed and evaluated by using combined method of 3S technology,traditional ground yield test and laboratory testing.This study has important significant of guidance for making scientific and reasonable plan of ecological protection and grazing utilization,and it also provides references and guidance for evaluation of similar grassland resources and analysis of nutritional balance of grazing livestock in Gansu corridor or even in arid area of western china.The results show that the total area of desert with warm soil properties in Huacaotan is 2.53×104 hm2 and the yield of fresh edible forage is 4 430.03 kg/hm2;the vegetation in Huacaotan belongs to typical desert vegetation,which has higher contents of ash,calcium and moisture and lower contents of crude protein and phosphorus,therefore,except from June to October the fresh edible forage in Huacaotan can meet the protein demand of existing grazing livestock,it needs to supplement feeding of legume forage and protein cake feed in winter and spring and phosphoric in whole year.
