Chinese Journal of Agrometeorology ›› 2022, Vol. 43 ›› Issue (05): 380-392.doi: 10.3969/j.issn.1000-6362.2022.05.005

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Drought Risk Assessment of Table Grapes in the Bohai Rim Region Based on Crop Water Deficit Index

XIAO Nan-shu, LIU Bu-chun, YIN Hong, LIU Yuan, QIU Mei-juan, ZHANG Yue-ying, WANG Ke-yi   

  1. 1.College of Agronomy, Shenyang Agricultural University, Shenyang 110866, China; 2.Institute of Environment and Sustainable Development in Agriculture, CAAS/National Engineering Laboratory of Efficient Crop Water Use and Disaster Reduction/Key Laboratory of Agricultural Environment, Ministry of Agriculture and Rural Affairs, Beijing 100081; 3.Liaoning Meterological Service Center, Shenyang 110166;4.College of Agronomy and Resources and Environment, Tianjin Agricultural University, Tianjin 300392;5.China Meteorological Press Ltd, Beijing 100081
  • Received:2021-09-22 Online:2022-05-20 Published:2022-05-19

Abstract: The influence of water on the growth and development of grapes cannot be ignored. In order to provide a theoretical reference for drought risk management and loss reduction and quality assurance of table grapes, the Bohai Rim region was taken as a study area. The crop water deficit index, which was calculated using daily meteorological data from 60 meteorological stations in the region from 1981 to 2014, was taken as an index to explore the drought of table grapes. By the crop water deficit index of the table grapes in each growth period in the region, the drought frequency and station ratio of the table grapes in each growth period were obtained. Then we evaluated the risk of drought based on the spatial and temporal distribution of table grapes in the region. The results showed that the matching degree was low in the time dimension between the water requirement of table grapes in the Bohai Rim region and precipitation, and table grapes in the region had a certain risk of drought in each growth stage. The new shoot growth period and fruit ripe period of table grapes were high-risk periods of drought in the region, when droughts were more frequently and more severely to occur. The central and southern part of Hebei province were high-risk area for drought, and where the risk of severe droughts is higher for table grapes. Table grapes in the Bohai Rim region had the most widely range of drought during the ripening period.

Key words: Table grapes, Bohai Rim region, Crop water deficit index, Drought risk