摘要
为研究湘西植烟区域土壤养分特征和分区状况,采用GPS和模糊c均值聚类相结合的方法,对湘西植烟土壤主要养分进行管理分区。结果表明:(1)湘西植烟土壤有机质含量偏高,有效磷含量极高,全氮、碱解氮和速效钾的含量均为中等水平,各项养分指标均为中等程度变异。(2)通过相关分析筛选法,选取有机质、全氮、碱解氮、有效磷和速效钾作为养分管理分区指标。(3)湘西烟区可划分为3个养分管理分区,第1分区的特点是适氮、超高磷、高钾;第2分区的特点是适氮、适磷、低钾;第3分区的特点是适氮、高磷、钾素适宜。3个分区间有11项土壤养分指标含量差异显著或极显著。
To study the soil nutrient characteristics and zoning of tobacco planting area in Xiangxi,Using the method of combining GPS and fuzzy c-means clustering,management zoning of main nutrients of tobacco planting soil in Xiangxi,Hunan province.The results show that:(1)The content of organic matter in soil of Xiangxi was high,the content of effective phosphorus was very high,and the content of total nitrogen,alkaline nitrogen and available potassium were medium level,all the above nutrient indexes showed moderate variation.(2)Through correlation analysis and screening,organic matter,total nitrogen,alkali-hydrolyzed nitrogen,available phosphorus and available potassium were selected as the zoning indexes of nutrient management.(3)Xiangxi tobacco area can be divided into three nutrient management zones.The characteristics of the first zone are suitable nitrogen,ultra-high phosphorus and high potassium;The characteristics of the second zone are suitable nitrogen and phosphorus and low potassium;The characteristics of the third zone are suitable nitrogen,high phosphorus and suitable potassium.There were significant or extremely significant differences in the contents of 11 soil nutrient indexes among the three zones.
出处
《安徽农学通报》
2019年第13期119-122,共4页
Anhui Agricultural Science Bulletin
基金
湖南省烟草公司项目“基于营养诊断的烤烟肥料配方改进技术研究及应用”(XX16-18Aa02)
湘西烤烟良好农业操作规范及推广应用研究(州烟司2012-37)
关键词
植烟区
土壤养分
管理分区
湘西
Tobacco planting area
Soil nutrients
Manage partitions
Xiangxi
