各种生物在生长发育过程中都必须不断从外界吸收各种物质能量,通过代谢过程将它转化为自身的躯体物质,同时取得生命活动所需要的能量。从死的有机物获得营养物质和能量的生物,称为腐生生物。如大多数细菌、放线菌、真菌和蚯蚓、蝇蛆等某些低等动物便属于这一类。它们以动植物的遗体、排汇物以及其它有机废物为营养和能量来源,以维持正常的生长发育,进行高速度的繁殖,促进了自然界的物质转化。如何利用腐生生物的这种特殊优 All kinds of organisms in the process of growth and development must continue to absorb all kinds of material energy from the outside world, through the metabolic process it will be transformed into its own body material, at the same time to obtain the energy needed for life activities. Creatures that derive nutrients and energy from dead organisms, called saprophytes. Such as most bacteria, actinomycetes, fungi and earthworms, maggots and other lower animals will fall into this category. They use animal and plant remains, excretions and other organic wastes as nutrients and energy sources in order to maintain normal growth and development, promote high-speed breeding and promote the transformation of the natural world. How to make use of this particular superiority of saprophytic organisms