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人粪尿历来是农家的好肥料,在50和60年代,人粪尿在农业生产上曾红极一时,身价极高,一直被农作主帅——粮食作物所把持,茶叶却无法争用。从70年代开始,我国化肥工业崛起,由于化肥具有肥效快,效果好,施用成本低,而且省工、省力、卫生等优点,于是,人粪尿的身价便开始下降,由“香”逐渐变“臭”。到了80年代,化肥工业进一步发展,同时乡镇企业也迅猛兴起,出现农村劳动力不断向工副业生产转移,这时农民已讲究农业生产劳力投放的经济效益,并且对农活更加要求省力、清洁,因此,人粪尿就变得更“臭”了,在城镇中已成为一大包袱。如浙江新昌县
Human waste has always been a good fertilizer for farmers. In the 1950s and 1960s, human excrement was extremely successful in agricultural production. It was extremely valuable and has been dominated by agricultural managers - food crops and tea but unable to compete. Since the 1970s, China’s fertilizer industry has risen. Since manure has the advantages of fast fertilizer, good effect, low application cost, labor saving, labor saving and hygiene, the value of human waste urine begins to decline. “smelly”. By the 1980s, with the further development of the fertilizer industry and the rapid rise of township and village enterprises, the rural labor force continued to shift its production to the sideline and sideline industries. At this time, the peasants had paid attention to the economic benefits of agricultural production and put more effort and effort on farm work. Therefore, Human waste becomes more “stinky” and has become a big burden in towns and cities. Such as Zhejiang Xinchang County