Research on the degradation of tropical arable land soil: Part II the distribution of soil nutrients in Eastern part of Hainan Island
文献类型: 外文期刊
作者: Wang, Dengfeng 1 ; Wei, Zhiyuan 1 ; Qi, Zhiping 1 ;
作者机构: 1.Chinese Acad Trop Agr Sci, Trop Crops Genet Resources Inst, Minist Agr, Danzhou 571737, Peoples R China
关键词: Tropical arable land;Nutrients;GIS;Hainan
期刊名称:PIAGENG 2013: INTELLIGENT INFORMATION, CONTROL, AND COMMUNICATION TECHNOLOGY FOR AGRICULTURAL ENGINEERING
ISSN: 0277-786X
年卷期: 2013 年 8762 卷
页码:
收录情况: SCI
摘要: Research on the temporal & spatial distribution of soil nutrients in tropical arable land is very important to promote the tropical sustainable agriculture development. Take the Eastern part of Hainan as research area, applying GIS spatial analysis technique, analyzing the temporal & spatial variation of soil N, P and K contents in arable land. The results indicate that the contents of soil N, P and K were 0.28%, 0.20% and 1.75% respectively in 2005. The concentrations of total N and P in arable land soil increased significantly from 1980s to 2005. The variances in contents of soil nutrients were closely related to the application of chemical fertilizers in recent years, and the uneven distribution of soil nutrient contents was a reflection of fertilizer application in research area. Fertilization can be planned based on the distribution of soil nutrients and the spatial analysis techniques, so as to sustain balance of soil nutrients contents.
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