坡地核果類果樹營養調查

Investigation on the Nutrient Status of Stone Fruits on the Slope Land in Taiwan

本試驗是進度報告，臺灣中部高海拔山區主要栽培核果類果樹營養狀況。就以葉內氮、磷、鉀、鈣、鎂、鐵、銅及錳等八種無機養分濃度來看，桃均在正常水準內，池因李葉氮量已超出正常水準，蘇丹李葉鎂量則低於正常水準，各核果類栽培品種間無機養分濃度有差異。葉內碳氮比與結果枝數有正比關係。

Nutrient concentrations in leaves of peach and plum grown on high altitude in central Taiwan were investigated. Concentrations of N, P, K, Ca, Mg, Fe, Cu and Mn in leaves of peach showed in the normal range. While N in leaves of Kelsey plum was above normal level and Mg in leaves of Sordum plum were below normal content as compared with the established U. S. standard. Significant difference in mineral concentrations was formed between cultivars. Positive correlation was also noted between number of fruiting branches and leaf C/N.