摘要
为了解曲靖烟区土壤养分含量的分布状况,采集和分析了曲靖市2 560份土壤样品,并利用地统计学方法对其养分含量进行了研究。结果表明:曲靖大部分地区植烟土壤偏酸性,会泽西部、麒麟区中部土壤偏碱;有机质含量丰富,除会泽北部外,其他地方含量均超过2.25%;碱解氮含量总体偏低,平均为120.28 mg/kg;速效磷含量较高,从东往西明显升高,各县差异较大;速效钾含量从东南向西北有下降的趋势;全氮含量较适宜,由东往西有下降的趋势;全磷含量在宣威、罗平、师宗分布适宜,其它地区含量均偏低;全钾含量从东往西升高,会泽西部、马龙沾益交界处含量适宜,宣威南部、沾益富源交界处含量过低。
In order to realize the contents of soil nutrients distribution status in tobacco-growing area of Qujing,the 2 560 soil samples in Qujing were collected and analyzed,and the contents of soil nutrients were studied by geostatistics.The result showed that the plant-tobacco soil samples in most areas of Qujing were acidic and those in the west of Huize and the centre of Qilin were alkaline.The contents of organic matter in soil were rich and more than 2.25% except the north of Huize.Overall,the contents of alkali-hydrolyzable nitrogen（N） were lower and the average was 120.28 mg/kg.The contents of available phosphorus（P） were higher and obviously increased from east to west,the difference among area was large.The contents of available potassium（K） declined from southeast to northwest.The contents of total N was suitable,but had a downtrend from east to west.The contents of total P were suitable in Xuanwei,Luping and Shizong,lower in other areas.The contents of total K increased from east to west and were suitable in the west of Huize and junction of Malong and Zhangyi,but lower in the south of Xuanwei and junction of Zhanyi and Fuyuan.
出处
《云南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第5期648-654,共7页
Journal of Yunnan Agricultural University:Natural Science
基金
烟草工商研共建品牌与原料协同发展机制项目(110200801036)
天香工程项目
关键词
土壤养分
空间分布
地统计学
曲靖烟区
soil nutrient
spatial distribution
Geostatistics
tobacco-growing area of Qujing
