前言柑桔类生态上有一年生枝结果的习性,因而容易发生隔年结果现象。施行摘果(花)等虽有效果,但关于发生隔年结果的营养问题,过去尚未研究。作者自1953以来,用温州蜜柑做试验材料进行叶分析法作营养诊断研究,得到初步的结论,但未明了地方还非常多,本文只供参考。植物体中的成分及作用从植物体分析的结果,证明肥料中的氮素、燐酸、钾、钙、镁、锰等15种以上的元素,均在植物体 Preface Citrus ecological habit of annual branch of the results, and therefore prone to the phenomenon of the second year results. The implementation of the fruit picking (flower), etc. is effective. However, the issue of nutrition after the second year has not been studied in the past. Since 1953, the author has made tentative conclusions by using leaflet analysis of Wenzhou Satsuma mandarin as a test material, but it is still not clear where it is. This article is for reference only. The composition and role of plants from the plant body analysis of the results show that fertilizers nitrogen, acid, potassium, calcium, magnesium, manganese and other 15 kinds of elements are in the plant