海南槟榔园土壤养分状况研究

为了海南槟榔产业稳步健康的发展,针对槟榔生产现状和槟榔园土壤肥力状况进行了调查和分析。采集了大量的土壤和植株样品,采用常规分析的方法进行测定。结果表明:海南槟榔园土壤的有机质含量偏低(1.86%),全氮处于极度贫乏(0.0165%),碱解氮较丰富(103.0mg/kg);有效磷含量偏低(11.6mg/kg),有效钾处于中等水平(73.9mg/kg),Na 和Cl-含量丰富(平均分别为323.3mg/kg;72.7mg/kg)。槟榔叶片含有较高的Na。海南槟榔生产管理极为粗放,土壤水土流失严重,槟榔园土壤肥力整体水平低下,导致槟榔产量难于提高。

Study on the Soil Nutrient Status of Areca Plantation in Hainan

According to the areca production situation and soil fertility,the investigation was carried on in Hainan.The soil and plant samples of representative areca plantation were collected for determination and analysis with normal methods.The results showed that the soil organic matter content was in low level(1.86%) in the areca plantation,the total nitrogen was extremely poor(0.0165%),the alkali-hydrolyzadle nitrogen was rich(103.0mg/kg),the available phosphorus content was in low level(11.6mg/kg),the available potassium was in the medium level(73.9mg/kg),the content of Na and Cl-in the soil were rich(average:323.3 mg/kg and 72.7mg/kg).The Na content in the Areca leaves was very high.The production management of areca in Hainan was extremely extensive.The soil and water erosion in the areca plantation was very serious.It was very difficult to promote areca production because of low soil fertility.