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一、三处理的重大意义粪便、垃圾和污水中含有大量的氮、磷、鉀和有机質,不仅具有很高的肥料价值,还有改良土壤、培养地力的作用。因此,苏联虽已能生产大量化学肥料,但仍提倡大力利用粪便、垃圾和污水以发展农业生产。人粪尿中含有大量肥分。每一成人每年所排泄的人粪尿可折合硫酸銨44斤,过磷酸鈣16.6斤,硫酸钾8.8斤。每一万人每年所排泄的人粪尿可折合硫酸銨44万斤,过磷酸鈣16.6万斤,硫酸钾8.8万斤。人尿的价值也很高,由于排尿量較大,每人排尿量約等于排粪量的七倍,因此每人所排尿中实际含氮量仅相当于人粪四倍,磷二倍,钾四倍。据计算,每人每年所排尿可相当于豆餅100斤,一万人的尿即相当于豆饼100万斤。尿中还有一种生长素,能促进庄稼的生长。
The Significance of the First and Third Treatments Manure, garbage and sewage contain a large amount of nitrogen, phosphorus, potassium and organic matter, not only with high fertilizers value, but also soil improvement and soil fertility. Therefore, although the Soviet Union has been able to produce large quantities of chemical fertilizers, it still advocates the vigorous use of manure, garbage and sewage to develop agricultural production. Human waste contains a lot of fat. Each adult excreted human excrement can be equivalent to 44 kg of ammonium sulfate, superphosphate 16.6 kg, potassium 8.8 kg. Excretion of human excreted per million people per year can be equivalent to 44,000 kg of ammonium sulfate, superphosphate 166,000 kg, potassium sulfate 8.8 kg. The value of human urine is also very high. Due to the large amount of urination, the amount of urination per person is about seven times of the amount of defecation. Therefore, the actual amount of nitrogen contained in each urinating person is only four times of that of human excrement, Four times. It is calculated that each person per year urination can be equivalent to 100 pounds of bean cake, urine of 10,000 people that is equivalent to 1 million pounds of bean cake. There is also a growth hormone in the urine, can promote the growth of crops.