宁夏引黄灌区农田防护林网胁地情况调查研究  

Research on Farmland Shelterbelts in Yellow River Irrigation Area in Ningxia

作　　者：王宁庚 左忠[2] 潘占兵[2] 

机构地区：[1]宁夏盐池县环境保护和林业局,宁夏盐池751500 [2]宁夏农林科学院荒漠化治理研究所,宁夏银川750002

出　　处：《宁夏农林科技》2016年第11期22-25,F0002,共5页Journal of Ningxia Agriculture and Forestry Science and Technology

基　　金：国家林业局西北华北东北防护林建设局"宁夏引黄灌区农田防护林体系建设研究(2014)";宁夏回族自治区"十三五"重大项目--"宁夏多功能林业分区域研究与示范"

摘　　要：以防护林胁地状况为研究重点,在综合分析国内外防护林胁地问题研究进展情况的基础上,对宁夏引黄灌区窄林带、小网格白蜡、臭椿混交成熟防护林生长及胁地状况进行了调查研究。调查表明:目前宁夏引黄灌区农田防护林网日趋成熟,林网过密、树冠过高过大、林带胁地严重、树种单一,农林矛盾突出。由于林带胁地作用,距离防护林带不同水平距离耕作层内土壤养分变化也较明显,1 H处及以内林带胁地明显,其中0.2 H、0.5 H玉米单株地上鲜生物量分别减少了52.72%和26.06%。上述分析表明,采用大网格为主导的新型、疏透型农田防护林网更新技术已迫在眉睫。Research on Yellow River Irrigation Area in Ningxia was carried out in this paper with farmland shelterbelts as main focus and farmland shelterbelts research background at home and abroad as basis. The growth of mature shelterbelt of belt of trees in Yellow River Irrigation Area, small net white wax and ailanthus and conditions of soil coerced were studied.Results showed that farmland shelterbelts in Yellow River Irrigation Area in Ningxia were increasingly mature with problems such as heave density of shelterbelts, outgrown crown, severe soil coerced and single tree seed. Because of the soil coerced,soil nutrient contents of different plough layers keeping different horizontal distances with shelterbelt appeared to be significantly different, especially the nutrient content of 1 H, and AFBM of individual plant of corn of 0.2 H and 0.5 H respectively decreased by 52.72% and 26.06%. It can be concluded that a new type of farmland shelterbelts with macroreticular is extremely urgent.

关 键 词：宁夏引黄灌区 农田防护林 胁地 

分 类 号：S727.24[农业科学—林木遗传育种]