福建省霞浦县茶园土壤养分状况分析

Nutrient Contents of Soils at Tea Plantations in Xiapu County,Fujian

通过对福建省霞浦县柏洋、崇儒、水门3个茶叶主产乡镇221个茶园土样进行测定分析,明确茶园土壤养分丰缺情况。结果表明:霞浦县茶园土壤pH均值为4.2,其中pH值小于4.5占81%,土壤酸化严重;茶园土壤有机质平均含量为33.1g·kg^(-1),其中符合优质高效高产茶园标准达87.78%,土壤有机质含量丰富;茶园土壤碱解氮、有效磷、速效钾平均含量分别为192.3mg·kg^(-1)、6.0mg·kg^(-1)、83mg·kg^(-1),符合优质高效高产茶园标准比例分别为97.74%、6.33%、18.10%,土壤碱解氮含量丰富,有效磷、速效钾含量偏低。

A total of 221 soil samples collected from the tea plantations in three major tea producing townships including Baiyang, Chongru, and Shuimen in Xiapu County, Fujian were analyzed for their contents of nutrients. The results showed that （1） the mean pH of the soils was 4. 2, with 81 % of being lower than 4. 5, indicating a serious soil acidification existed at the plantations; （2） the average content of organic matters was 33. 1 g/kg, with 87. 78% of the samples qualified for high quality and high yield tea production, indicating a rich organic matter content of the soils; （3） the average content of alkaline hydrolysis nitrogen was 192. 3 mg/kg, that of available phosphorus, 6. 0 mg/kg, and that of available potassium 83 mg/kg; and in regard to those nutrients, 97. 74% , 6.33%,and 18.10%, respectively, of the plantations met the standards for high quality and high yield tea production; and, （4） in general, alkali-hydrolyzed nitrogen in the soils was rich, while available phosphorus and potassium low.