摘要
【目的】研究苍梧崩岗洪积扇不同土地利用方式的土壤理化性质差异,探索有利于崩岗洪积扇农田土壤恢复的土地利用方式。【方法】以苍梧县龙圩镇崩岗洪积扇为调查对象,对比分析不同土地利用方式土壤理化性质差异性,并采用修正的内梅罗综合指数法对洪积扇土壤进行肥力评价。【结果】崩岗洪积扇土壤采用不同土地利用来恢复的土壤理化性质存在差异,相对于撂荒地,不同土地利用方式的土壤黏粒含量均有所增加,土壤养分均存在不同程度提高。对其进行肥力评价可知:撂荒地和桉树林肥力属于四等,杉树林肥力为三等,沙糖桔园肥力属于二等,而菜园肥力达到一等。【结论】崩岗洪积扇采用不同土地利用方式均有利于沙化土壤的恢复,尤其是利用于菜园和沙糖桔园耕作效果较好。
[Objective]The diversity of dilapidated granite alluvial fan soil physical and chemical properties by different land use patterns in Cangwu were studied in order to reveal beneficial land use patterns affected by the collapse of the post farmland restoration of alluvial fan. [ Method ]The dilapidated granite alluvial fan in Long town Cangwu county were surveyed,the diversity of dilapidated granite alluvial fan soil physical and chemical properties by different land use patterns were studied ,and the alluvial fan soil fertility were evaluated by using modified Nemerow index method. [Resuits]Collapsing gully alluvial fan soil using different land use to restore the soil physical and chemical properties were different,with respect to the wasteland,different land-use patterns had increased the soil clay content, soil nutrients were improved in different degrees. At the same time the fertility evaluation of the abandoned land and eucalyptus tree were fourth class fertility, fir tree was third class fertility, sugar orchard was second class fertility, and vegetable garden was first class fertility. [Conclusion]Effect of different land-use patterns on soil properties differentiation will improve collapsing alluvial area in sandy soil, especially there is better effect in vegetable garden and cultivation sugar orchard.
出处
《南方农业学报》
CAS
CSCD
北大核心
2015年第4期592-596,共5页
Journal of Southern Agriculture
基金
广西自然科学基金项目(2014GXNSFAA118287)
广西高校科研基金项目(YB147)
关键词
崩岗
洪积扇农田
土地利用
土壤性质
肥力评价
collapsing gully
alluvial fan
land use
soil properties
fertility evaluation
