【摘要】 本文报道了不同季节内喷施矿质营养元素后油桐叶片营养元素含量的变化。结果表明:通过喷施钾、钙可以加速氮和磷的新陈代谢,增加油桐产量。七月份是矿质元素营养诊断叶子取样的适宜季节,尽管铁、硼、铜、锌等元素都能被叶子吸收,但能明显促进产量的是铁。更多还原

【Abstract】 This paper reports on the mineral content in leaves after spraying certain amount of mineral elements during different season and its effects on production. Results have revealed the accelerated matebolism of N and P by K and Ca spraying, and consiquently an increase in output. July is considered the suitable month to collect sample leaves for nutrition diagnosis of mineral elements. Though all the mineral elements like Fe, B, Cu, Zn ect. can be taken in by the leaves, the element which brought distinct increase in output is Fe.更多还原