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城镇污水处理厂COD浓度变化规律的研究
引用本文:罗玉鑫.城镇污水处理厂COD浓度变化规律的研究[J].北京农业,2011(12):51-52.
作者姓名:罗玉鑫
作者单位:沈阳市农业科学院,沈阳,110034
摘    要:由于北方冬季比较漫长,城镇污水排放COD浓度符合居民生活用水习惯的实际情况。在调研区域,城镇生活污水COD浓度平均值为234.30mg/L,基本符合典型的生活污水的水质,属于浓度较低的生活污水。

关 键 词:城镇污水  COD  城镇污水处理厂

Consumption of Hybrid Sunflower Cultivation Techniques
Luo Yuxin.Consumption of Hybrid Sunflower Cultivation Techniques[J].Beijing Agriculture,2011(12):51-52.
Authors:Luo Yuxin
Abstract:Sunflower crops are more common,not only for ornamental flower cultivation,there is a special type of sunflower cultivation of food.As a cash crop,the yield of the crop was cultivated by the most valued part.Order and a good income,you need to engage in good yield as a guarantee.Edible sunflower yield cultivation techniques,especially the consumption of high-yielding hybrid sunflower cultivation techniques,the vast number of issues of concern to growers.Combined consumption of the characteristics of hybrid sunflower itself,the author of its cultivation technology for a shallow analysis,for all to share.
Keywords:edible  hybrid sunflower  high-yield cultivation techniques  artificial pollination
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