木素及其衍生物在农、林业中的应用

木素及其衍生物主要是来自木材制浆和造纸工业的副产物，即硫酸盐（或碱）木素、木素磺酸盐或木材水解工业产生的剩余物，即水解木素。过去这些木素大多作为燃料使用，为了提高木材利用率和增加工厂经济效益，科学工作者研究了关于木素及其衍生物在工、农（林）业生产中的应用，并取得了很多成就。本文评述了木素及其衍生物在农、林业中的应用，包括：植物生长刺激剂、含氮木素肥料、含微量元素木素肥料、土壤改良剂、动物饲料添加剂、农药缓慢释放剂等。

Lignin and Its Derivatives Appliedin Agriculture and Forestry

Abstract The principal chemical constituents of plants are cellulose, semi-cellulose andlignin. Both cellulose and semi-cellulose are hydrocarbons, while lignin is an aromaticcompound. Lignin and its derivatives are. mainly lignin sulfate, lignin sulfonate and hy-drolyzed lignin, resulting from wood pulping, paper making and wood hydrolyzation. Inthe fields of agriculture and forestry, they can be used as plant growth stimulators, Ncompound fertilizers, tracer compound fertilizers, soil improving agents, fodder add-itives, slow releasing agents of pesticides, nutrients for edible fungus culture, and fruitand plant preservatives. The plant growth stimulators, made of lignin sulfonate, hy-drolyzed lignin and lignin derivatives, being effective in use. The fertilizers made ofthem, when applied to farmland and forest land, are also effective.