CAJ | 학술논문

为探明重庆主要植烟土壤的肥力状况，以便为土壤改良和施肥决策提供理论依据，对10个县植烟土壤的pH值及有机质、碱解氮、速效磷、速效钾、水溶性氯、交换性钙和镁等含量进行了研究。结果表明，研究区50%以上植烟土壤酸化严重，黔江、丰都、石柱县有60%以上植烟土壤pH值小于5.5；有机质和速效磷含量总体适宜；碱解氮含量偏高，有95.71%的植烟土壤氮素供应过剩；速效钾含量总体适宜，仅33.10%的土样含量偏低；水溶性氯含量总体偏低，仅33.99%的土样适宜烤烟种植；交换性钙含量中等偏低，交换性镁含量中等偏高。因此，在烟叶生产中要加强酸化土壤治理，严格控制氮肥，适量补充磷、钾、镁肥，增施氯、钙素肥料。
위탐명중경주요식연토양적비력상황，이편위토양개량화시비결책제공이론의거，대10개현식연토양적pH치급유궤질、감해담、속효린、속효갑、수용성록、교환성개화미등함량진행료연구。결과표명，연구구50%이상식연토양산화엄중，검강、봉도、석주현유60%이상식연토양pH치소우5.5；유궤질화속효린함량총체괄의；감해담함량편고，유95.71%적식연토양담소공응과잉；속효갑함량총체괄의，부33.10%적토양함량편저；수용성록함량총체편저，부33.99%적토양괄의고연충식；교환성개함량중등편저，교환성미함량중등편고。인차，재연협생산중요가강산화토양치리，엄격공제담비，괄량보충린、갑、미비，증시록、개소비료。
In order to explore the soil fertility conditions in Chongqing tobacco growing areas and provide theoretical basis for soil improvement and fertilization strategy,the pH value,organic matter,available N, available P,available K,water-soluble Cl,and exchangeable Ca and Mg contents of soil in 10 counties in Chongqing tobacco growing areas were analyzed. The results showed that above 50% of the soil in the studied area were of acidity,and the proportion of pH value which was less than 5. 5 was more than 60%in the Qianjiang,Fengdu and Shizhu county. The contents of organic matter and available P were medium. The content of available N was generally high,available N content of 95. 71% soil samples was excess. The content of available K was generally appropriate,the available K content of 33. 10% soil samples was low. The content of water-soluble Cl was low,the proportion of soil samples whose water-soluble Cl content was suitable to plant tobacco was 33. 99%. The content of exchangeable Ca was little lower than medium, and the content of exchangeable Mg was little higher than medium. Therefore,the suggestions were put for-ward,such as strengthening the soil acidification in Chongqing tobacco growing areas,controlling N ferti-lizer application amount,supplementing P,K and Mg in moderation,and adding Cl and Ca fertilizers.