祁连山牧区四季草地合理利用技术研究

Technical research on rational utilization of fourseasons pastures in Qilian Mountain

通过对祁连山牧区四季草地的合理利用,在降低夏草场载畜量的同时合理利用闲置的冬草场,以实现四季牧场的季节性草畜平衡。试验将夏季部分细毛羊羔羊转移至冬草场,后监测转场后各草场的情况,以及羔羊和母羊体重指标变化状况,并计算不同草场载畜量及牧户经济效益。结果表明:降低夏草场载畜量后,可分别提高夏草场和冬草场鲜草产量18.5和3.5kg/hm^2,由于试验组羔羊转移至冬草场后被强制断奶,试验组母羊30d的平均日增重达到215g,极显著高于对照组母羊(P<0.01);同时提高牧户纯收入940元。

For realiazing the seasonal feed balance on four seasons pasture,the paper studied the appraoch of winter pasture use in summer through reducing stock rate on summer pasture.The studying monitored the changes of vegetation in summer and winter pastures,body mass of lamb and ewe after moved lambs in summer pasture to winter pasture.The results showed that the freash biomass in summer and winter pastures were increased by 18.5kg/ha and 3.5kg/ha,respectively.Because the lambs in experimental group were weaned by force after they were transferred to the winter pastures,the averaged-daily-gain of the ewes was 215 g in a month and it was significantly higher than that of the contrast ewes.The net income of herders were increased by 940 RMB.