摘要
【目的】研究不同改良措施下沙质土壤质地变化,为沙化土壤改良提供科学依据。【方法】以新疆南疆典型沙化土壤为研究对象,设置5种不同改良措施(种植燕麦(A1)、种植油菜+燕麦(A2)、种植燕麦+油菜秸秆翻耕+生物菌肥(A3)、种植燕麦+农家肥(A4)、种植燕麦+农家肥+生物菌肥(A5)),采用田间试验,分析不同改良措施对沙化土壤颗粒组成分形的影响。【结果】不同改良措施下土壤分形维数D值介于2.35~2.49,与对照相比,随着土层的加深,土壤的细颗粒物质的分形维数值呈增加趋势;土壤颗粒分形维数D值与黏粒呈极显著正相关,与细粉粒呈显著正相关,与砂粒呈显著负相关。【结论】农家肥或绿肥与生物菌肥配合施用,可有效改善沙化土壤的理化性状。
【Objective】The objective of this work is to study the texture changes of sandy soil under different improvement measures with the view of providing scientific theoretical basis for the improvement of sandy soil in Southern Xinjiang.【Methods】Five different improvement measures were applied to the sandy soils of southern Xinjiang,namely,planting oats(A1),planting rape+oats(A2),planting oats+rape straw tillage+biofertilizer(A3),planting oats+agrofertilizer(A4),planting oats+agrofertilizer+biofertilizer(A5),and the effect of the five different improvement measures on the sandy soils was analyzed through the field tests.【Results】The results showed that the fractal dimension D values of the soil under different improvement measures ranged from 2.35 to 2.49.As the soil layer deepened,the fractal dimension values of fine particulate matter in the soil tended to increase compared to the control.The fractal dimension D of soil particles was positively correlated with clay particles and with fine powder particles,and negatively correlated with sand particles.【Conclusion】Comprehensive analysis showed that the combination of farm manure or green manure with biological bacteria fertilizer can effectively improve the physical and chemical properties of the sandy soil.
作者
郑亚楠
姚永生
古丽热娅尼·阿斯哈尔
安世杰
李延霞
支金虎
ZHENG Yannan;YAO Yongsheng;Guljiani Asghar;AN Shijie;LI Yanxia;ZHI Jinhu(Institute of Plant Sciences, Tarim University, Aral Xinjiang 843300, China;Southern Oasis Agricultural Resources and Environment Research Center, Tarim University, Aral Xinjiang 843300, China)
出处
《新疆农业科学》
CAS
CSCD
北大核心
2021年第9期1665-1671,共7页
Xinjiang Agricultural Sciences
基金
国家重点研发计划(2017YFC0504300,2017YFD0201900)。
关键词
改良措施
土壤粒径
分形维数
土壤理化性质
improvement measures
soil particle size
fractal dimension
soil physicochemical properties