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河南省长葛县农村经饮水改良和粪便无害化处理后使腹泻病得到控制。试验村改水前腹泻发病率为48%,1986年建起简易集中式供水系统后发病率降至28.2%;改水后又修建双瓮漏斗型厕所,使腹泻发病率继降至11.08%,较1983年下降76.92%。特别对降低6—10月腹泻病发病高峰效果非常显著,但病原分布无明显差异。该二项措施人均援资46.31元,一年内由疾病减少,节省挑水劳力和积肥可获23.53元效益,效益与费用比值(BCR)为0.51。预计总投资可在2年内自身偿还,第三年及以后的 BCR 为4.42。
Changge County, Henan Province, after drinking water improvement and harmless diarrhea control. The incidence of diarrhea in experimental villages was 48%. In 1986, the incidence rate of simple centralized water supply system dropped to 28.2%. After the water was changed, a double-urn funnel-type toilet was built to further reduce the incidence of diarrhea to 11.08% Down 76.92% over 1983. Especially for reducing the peak incidence of diarrhea from June to October is very significant, but there is no significant difference in pathogen distribution. The per capita investment of the two measures was 46.31 yuan. Within one year, the disease was reduced, the cost of water-saving labor and accumulated fertilizer was 23.53 yuan, and the benefit-to-cost ratio (BCR) was 0.51. The total investment is expected to be repaid within 2 years, with a BCR of 4.42 for the third and subsequent years.