海南岛水稻田有效硅含量及其影响因素分析  

Analysis on Available Silicon Content and Its Influencing Factors of Rice Field in Hainan Island

作　　者：张冬明[1] 谢良商[1] 肖彤斌 符传良 曾建华[1] 吉清妹 张文[1] ZHANG Dong-ming XIE Liang-shang XIAO Tong-bin FU Chuan-liang ZENG Jian-hua JI Qing-mei ZHANG Wen(Key Laboratory of Arable Land Conservation of Hainan Province/Scientific Observing and Experimental Station of Arabic Land Conservation （Hainan）, Ministry of Agriculture/Agricultural Environment and Soil Research Institute of Hainan Academy of Agricultural Sciences, Haikou Hainan 571100)

机构地区：[1]海南省农业科学院农业环境与土壤研究所/农业部海南耕地保育科学观测实验站/海南省耕地保育重点实验室,海南海口571100

出　　处：《现代农业科技》2017年第8期197-198,206,共3页Modern Agricultural Science and Technology

基　　金：海南省省属科研院所技术开发研究专项(KYYS-2015-12);海南省耕地改良关键技术研究与示范专项(HNGDhs201501)

摘　　要：为揭示海南岛水稻田土壤有效硅含量水平及其影响因素,并为海南省硅肥的合理开发利用和种植业结构调整提供科学依据,采用野外采样调查、室内分析及GIS作图相结合的方法,在分析各市县水稻田土壤有效硅含量基础上,研究成土母质、海拔高度和降雨量对土壤有效硅含量的影响程度。结果表明,全岛仅海口市和临高县的平均含量超过了70 mg/kg,海南岛属土壤有效硅严重缺乏地区;低海拔地区土壤有效硅含量普遍高于高海拔地区,但随着海拔高度增加,土壤有效硅含量先减少后增加;年降雨量少于900 mm时,土壤有效硅含量波动性小;年降雨量在1 300~1 900 mm之间时,土壤有效硅波动变大;当年降雨量超过1 600 mm时,其波动幅度最大。To reveal the content level and its influencing factors of soil available silicon in the paddy field of Hainan Island, and provide scientific basis for reasonable exploitation and utilization of silicon fertilizer and the planting structure adjustment.Field sampling,indoor analysis and GIS mapping were used, the effects of soil parent material, altitude and rainfall on the soil available silicon contents were stuedied based on the soil available silicon contents in rice fields among different counties. The results showed that only the average contents of Haikou City and Lingao County were over 70 mg/kg, Hainan Island was seriously lack of available silicon. The content of available silicon in high altitude area was higher than that in low altitude area.However,with the increase of altitude ,the content of available silicon in soil decreased firstly then increased. When the annual rainfall was less than 900 mm, the content of available silicon in soil showed small fluctuation, but there was a large fluctuation when the annual rainfall was between 1 300 mm and 1 900 mm, and the fluctuation was the largest when the annual rainfall exceeded 1 600 mm.

关 键 词：水稻田 有效硅 影响因素 海南岛 

分 类 号：S153.6[农业科学—土壤学]