农村生活污水一级处理水灌溉对青菜生长品质影响

通过3种水质对生长中的青菜进行灌溉,探讨利用农村生活污水一级处理水对青菜植株生长发育的品质影响.研究表明,相比较自来水和50%的农村生活污水,经过一级处理的农村生活污水对生长期的青菜灌溉,对青菜植株维生素C和硝酸盐质量比有一定的影响,维生素C质量比下降10%左右,硝酸盐质量比增长6%左右,对青菜株高、叶面积、地上部分鲜质量均没有明显差异.通过与国标蔬菜中硝酸盐质量比的限值比较,经过污水灌溉的青菜在安全食用范围内,不会影响到人类身体健康.因此,农村污水作为农作物灌溉的另一个重要水源,具有一定技术可行性和经济合理性.

Effect on cabbage quality with rural sewage primary treatment water irrigation

Through three kinds of water quality for irrigation on the growth of vegetables, it has discussed the influence of quality to the vegetable plant growth with utilization of rural primary treatment sewage. Research shows that, rural sewage water, after primary treatment of rural domestic sewage irrigation on vegetable growth period, have a certain influence on the the content of vitamin C and nitrate of the cabbage plants.The vitamin C content decreased about 10%, and the content of nitrate increased by 6% or so. Compared with the national standard limit of nitrate content in vegetables, it is in the safety of edible range after sewage irrigation of vegetables, and it will not affect the health of human beings. Therefore, rural sewage can be used as another important source of water for irrigation of crops, and it has certain technical feasibility and economic rationality.