重庆市新建柑橘园土壤养分现状研究

Study on Soil Nutrient Status of Newly Built Citrus Orchard in Chongqing

对重庆市柑橘主产区江津、永川、忠县、奉节、万州等新建柑橘园土壤样品进行测试分析,结果表明:部分新建柑橘园布局不合理,并存在土壤严重酸化问题;土壤有机质缺乏的占54.41%,土壤速效氮、磷、钾缺乏的分别占59.26%、62.22%、36.30%;土壤有效锌、硼含量比较缺乏的分别占38.52%、92.59%;土壤中的有效铜、铁、锰含量比较丰富,比较缺乏的仅占5.18%、9.63%、9.63%,针对新建柑橘园土壤出现的问题,提出耕作管理措施,以提高土壤肥力和柑橘园产量。

Soil samples from newly built citrus orchard of Jiangjin,Yongchuan,Zhongxian,Fengjie and Wanzhou in Chongqing were tested.The results showed that the distribution of some newly built citrus groves were unreasonable and the serious acidification of the soil existed.The deficiency rate of soil organic matter,available N,P and K was 54.41%,59.26%,62.22% and 36.30%,and deficiency rate of soil available Zn and B was 38.52% and 92.59% respectively.The contents of available Cu,Fe and Mn in soil were abundant,the deficiency rate was 5.18%,9.63%,9.63% respectively.Some tillage management measures were given aimed to solve the exsiting problems in newly built citrus orchard,so as to increase soil fertility and the yield of citrus orchard.