Analysis on Soil Fertility Characteristics of Main Tobacco Planting Areas in Panzhou
In order to accurately understand the status quo of soil nutrients in the main flue-cured tobacco planting areas in Panzhou City,171 soil samples were collected from 8 perennial tobacco growing villages and towns,and analyzed from 7 aspects,including pH,organic matter,alkali hydrolyzable nitrogen,available phosphorus,available potassium,water-soluble chlorine and CEC.The results showed that soil pH reached the optimum level.The average content of soil organic matter was(37.95±8.79)g/kg(CV 23.16%),and the content was generally in the rich level(30-50 g/kg).The average content of alkali-hydrolyzed nitrogen was(192.69±38.35)mg/kg(CV 19.90%),and 91.23%reached the very high level(>150 mg/kg).The available phosphorus content was generally in the range of moderate to abundant,with an av-erage of(24.82±20.46)mg/kg(CV=86.28%).The available phosphorus content in Zhuhai Town and Minzhu Town was higher,while that in Jichangping Town,Putian Township and Danxia Town was lower.The average available potassium content was(297.66±139.07)mg/kg(CV 46.72%),and 70.17%of the samples were more than 220 mg/kg.The chlorine content was generally low,with an average of(19.16±19.63)mg/kg(CV 102.45%).That was advisable to increase the application of chlorine fertilizer in Danxia Town(6.51 mg/kg),Minzhu Town(11.64 mg/kg),Xinmin Town(10.95 mg/kg)and Baotian Town(10.98 mg/kg).The water-soluble chlorine content in Jichang Ping Town and Dashan Town was higher,with an average of 47.63 and 34.55 mg/kg.The soil CEC was mainly from 10 to 20 cmol/kg,and soil fertility was suitable for flue-cured tobacco cultivation.
Soil fertilityCharacteristicsMain tobacco planting areas in Panzhou
万方数据
维普
