不同啃食强度对沙拐枣影响的初步研究  

A preliminary study on the effects of defoliation intensity on Calligonum alachanicum

作　　者：周志宇[1] 付华[1] 陈善科[2] 苏振军 王长命[2] 塔拉腾 青松[2] 

机构地区：[1]甘肃省草原生态研究所,甘肃兰州730020 [2]阿拉善盟草原站,内蒙古巴彦浩特750306

出　　处：《草业科学》2000年第3期39-41,共3页Pratacultural Science

基　　金：国家自然科学基金重点项目!(39730 1 0 0 )资助

摘　　要：在飞播区根据牲畜对沙拐枣啃食程度的不同 ,采用人工模拟放牧方法对牲畜啃食的绿色部分设置了 10 %、30 %、50 %、70 %、90 %、对照 6种不同啃食强度处理 ,以探讨啃食强度对沙拐枣生长的影响。试验结果表明 ,30 %啃食强度的生物量比 90 %的高 12 1.37% ,比对照高34.85%。沙拐枣的啃食强度在 30 %～ 50 %时生物量最高 。Six defoliation intensity treatments included 0 (control), 10%,30%, 50%, 70% and 90% of green tissue removed were simulated artificially on Calligonum alachanicum in airplane sown pastoral area in Alashan region. The results showed that 30% of green tissue defoliation increased the biomass of C.alachanicum by 121.37% and 34.85% as compared with 90% and control treatments respectively. The highest biomass was attained with defoliation intensity range from 30%～50%, and both none and severe defoliation resulted disadvantageous influences on the growth of C.alachanicum.

关 键 词：沙拐枣 啃食强度 生物量 家畜放牧 

分 类 号：S793.1[农业科学—林木遗传育种]