Data sets of isotopes of soil in Minqin oasis

From April to October 2019, representative farmland was selected to monitor soil water isotope data in Minqin Oasis.The samples were collected once every 7 days. In case of rainfall, the samples should be collected continuously for 3 days, and the samples should be collected intensively before and after irrigation, once before irrigation, and continuously for 5 days after irrigation. In addition, the soil with or without plastic film cover was sampled monthly during the observation period.