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五倍子是我国重要的工业原料之一。由五倍子生产的单宁酸、没食子酸等产品在医药、纺织印染、石油钻探、冶金、轻工、国防等部门均具有重要的用途。同时,五倍子也是我国传统的出口物资。近几年来五倍子的产量急剧下降,其原因是多方面的。但是,普遍认为采摘嫩倍是其主要原因之一。而采摘嫩倍与五倍子产量和质量的关系如何? 尚未见系统报道,笔者就这个问题,于1983-1984年,对角倍不同采摘期与五倍子产量和质量的关系进行了初步研究,现报道如下:
Chinese nutgall is one of China’s important industrial raw materials. Produced by gallnut tannin, gallic acid and other products in medicine, textile printing and dyeing, oil drilling, metallurgy, light industry, national defense and other departments have an important use. At the same time, Chinese nutgall is also China’s traditional export materials. In recent years, gallnut production dropped sharply for many reasons. However, it is generally believed that picking tender times is one of the main reasons for this. However, the relationship between the yield and quality of Nougat and gallnut has not been reported yet. The author has carried out a preliminary study on the relationship between yield and quality of gall nut during the period of 1983-1984, which is reported as follows :