氣溫與降雨量對本省主要椪柑產區之果實品質與柑樹營養狀況之影響

Abstract

爲明瞭木省主要極柑產區之果實品質差異與果園營養狀況，乃於71年及72年調查新竹縣、卓蘭、東勢、嘉義縣及臺南縣等地果園計約80處，於8月中旬至9月上旬間採取當年生春梢無結果枝第三葉，分析其要素含量，並採土分析理化性。於果實成熟期按東西南北方位於樹冠外圍採取平均大小之果實，計32果，按方位分析其品質。關於果園營養狀況將另文報告，本篇僅檢討不同緯度果園之椪柑品質差異及年度問葉片要素含量差異與氣溫、降雨量之關係。另採果時期、果型大小及著生方位對品質之影響，亦加討論。The variation in fruit quality and leaf nutrients content of ponkan (Citrusreticulata, Blanco) from 80 orchards distributed in major ponkan production area in Taiwan were investigated fortwo years (1982 and 1983). The 3rd leaves from non-fruiting spring flushes were taken in August or September for leaf analysis. Eight fruits taken from the same direction of the skirts ofeight trees (i. e., one fruit per tree) were grouped together for analysis of its quality. Mean value of the data of four directions represented the fruit quality. Mean value of data of four directions represented the fruit quality of orchard. The variation in fruit quality and nitrient content in leaf as related to climate were discussed. The effects of fruit size, time of sampling, and direction of sample taken on fruit quality were also discussed.