不同干扰方式对疏叶骆驼刺生长及生理特征的影响  

Effect of different treatments on the growth and physiological characteristics of Alhagi sparsifolia

作　　者：高欢欢[1,2,3] 曾凡江[1,3] 鲁艳[1,3] 刘镇[1,2,3] 安桂香[1,2,3] 刘波[1,2,3] 

机构地区：[1]中国科学院新疆生态与地理研究所、荒漠与绿洲生态国家重点实验室,新疆乌鲁木齐830011 [2]中国科学院大学,北京100049 [3]新疆策勒荒漠草地生态系统国家野外科学观测实验站,新疆策勒848300

出　　处：《草业学报》2015年第2期202-207,共6页Acta Prataculturae Sinica

基　　金：国家基金委-新疆联合基金重点项目(U1203201);国家自然科学基金项目(41371516)资助

摘　　要：本实验以塔克拉玛干沙漠南缘疏叶骆驼刺为研究对象,设置春季刈割、春季火烧、秋季刈割、对照4个处理,研究干扰对其生长及生理特征的影响。研究结果表明,1)秋季刈割叶片长宽比、叶片厚度显著大于其他处理,叶片进行能量交换、物质积累的能力最强。2)不同干扰方式均降低了疏叶骆驼刺株高,不利于疏叶骆驼刺的恢复与再生,3种人为干扰方式比较秋季刈割骆驼刺再生能力最强。3)秋季刈割叶片叶绿素含量显著高于其他处理。4)3种干扰在生理上降低了疏叶骆驼刺受外界逆境的损害,秋季刈割抗逆性最强。因此,秋季适度刈割是疏叶骆驼刺最佳的保护性利用措施。This paper reports a study of the effects of different treatments （spring mowing, spring firing, au- tumn mowing, and a contrast test） on the growth and physiological characteristics of Alhagi sparsifolia in the southern fringe of the Taklimakan Desert, The results show that under autumn mowing the leaves were signifi- cantly thicker and had a higher ratio of leaf length to width, indicating increased capability to transfer energy and material compared to the other treatments. All the treatments reduced A. sparsifolia plant growth and re- generation. However, mowing in autumn showed the strongest regenerative capability of the three treatments. Autumn mowing produced leaves with significantly higher photosynthetic pigment content than the other treat- ments. All three treatments reduced the physiological damage to A. sparsifolia from the external environ- ment, though mowing in autumn showed the strongest resistance. The paper thus concludes that autumn mov- ing is the best management practice for A. sparsifolia.

关 键 词：疏叶骆驼刺 干扰 生长特征 生理特征 

分 类 号：Q945[生物学—植物学]