Field Experiment On Fertilizer Application In Citrus Orchards (First Report)

Abstract

Field experiments on the fertilizer application in citrus orchards have been conducted in Sinpu and Yuanlin, the ponkan producing centers, since January, 1958. Five treatments 1. e., a) PK, b) NK, c) NP, d) NPK, e) NPK+Mg, Mn, Zn, were replicated four or five times in a randomized block layout to determine the effect of three elements as well as the trace elements upon fruit yields and the nutrient contents of leaves. 本試驗始於民國47年1月，目的在探討肥料三要素與微量元素對於柑桔收量之影響，以明瞭肥料三要素之施用比率及微量元素之缺否。同時亦經分析各肥料處理之柑葉樣本以供將來葉部診斷法研究之參考。 田間設計採用逢機區集法4~5重覆，每小區由4裸柑桔樹所成。試驗地點共設三處，其中兩處屬新埔鎮其樹齡為18年及20年，另一處則屬員林鎮其樹齡為9年，其品種皆為椪柑。第一年所得結果簡列如夾。