摘要
为推进玉溪烤烟模块化精准施肥,通过以乡镇为单元的土壤养分分级,评价了玉溪烟田土壤养分分布特征。结果表明,2008年玉溪烟田土壤养分水平较高的乡镇主要集中于东部水系密集区,坝地烟田土壤养分水平高于山地。2015年土壤有效氮和速效磷含量较高的乡镇由东部水系密集区延伸至西部和南部地区,山地烟田土壤有效氮和速效钾含量高于坝区。与2008年相比,2015年山地烟田有效氮、速效磷、速效钾含量增幅分别为92.54%、24.32%和34.58%,坝地烟田增幅分别为20.53%、4.15%和42.21%。7年间,山地烟田土壤pH值和有机质含量平均升高8.99%和2.38%,坝地烟田平均降低5.81%和10.77%,均趋于中等水平。研究结果为推进玉溪烟田模块化精准施肥提供了依据。
To achieve modular and precision fertilization for flue-cured tobacco in Yuxi,the distribution characteristics of soil nutrients in tobacco planting fields in Yuxi were measured and graded at county level.The results showed that in 2008,villages and towns with higher soil nutrient contents were mainly distributed in eastern river basins; and soil nutrient contents in tobacco-planting soils from dam lands were higher than those from mountainous regions. In 2015,villages and towns with higher N and P soil contents extended from eastern river basins to west and south areas. The available N and P contents in tobacco-planting soils from mountainous regions were higher than those from dam lands. Comparing with the results from 2008,the soil available N,P and K contents increased by 92.54%,24.32% and 34.58% in mountainous regions,and by 20.53%,4.15% and42.21% in dam lands in 2015,respectively. Within seven years,the soil pH and organic matter contents increased by 8.99% and 2.38% on average in mountainous regions,whiles on average these contents decreased by 5.81% and 10.77% in dam lands,respectively. The pH and organic matter content tended to be around moderate levels. The results provide a reference for a modular and precision fertilization strategy in Yuxi for tobacco-planting soils.
作者
卜令铎
李江舟
张立猛
焦永鸽
计思贵
李天福
BU Lingduo LI Jiangzhou ZHANG Limeng JIAO Yongge JI Sigui LI Tianfu(Yuxi Branch of Yunnan Provincial Tobacco Company,Yuxi 653100, Yunnan,China Yunnan Academy of Tobacco Agricultural Sciences,Kunming 650021, China)
出处
《烟草科技》
EI
CAS
CSCD
北大核心
2017年第3期23-30,共8页
Tobacco Science & Technology
基金
云南省烟草公司科技项目"玉溪植烟土壤养分变化及施肥对策研究与应用"(2015YN13)
关键词
玉溪
烟田土壤
pH
土壤养分
分级
分布
坝地
山地
Yuxi
Tobacco-planting soil
pH
Soil nutrient
Grading
Distribution
Dam land
Mountainous region
