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Fuzzy mathematics method is used to evaluate the groundwater quality in Yang village. The groundwater quality of 18 villages belongs to V level water (GB/T14848-9 Quality standard for ground water) in the study area, where water pollution is very serious. Polluted area mainly includes the sandy soil region in northeast Yang village and east bank villages in western Beijing-Hangzhou Canal. Yinma village...
With the development of the project of Formula Fertilization by Soil Testing in China, in order to investigate the soil condition, fertility level, nutrients status, soil degeneration status and the farmland integrated productivity of China, the government decided to start up the project of the evaluation of the farmland productivity with the field investigation data and the analysis assay data, which...
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