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- W4366772016 abstract "With the intensification of global warming, food production will face serious drought risk. In view of the insufficient applicability of the existing crop drought index, a standardized crop water deficit index (SCWDI) was constructed based on the construction idea of the standardized precipitation evapotranspiration index (SPEI) and the crop water deficit index (CWDI) in this study. On this basis, the spatial and temporal characteristics of spring maize drought in Songnen Plain were explored by the slope trend analysis and Morlet wavelet analysis methods. The results show the following: (1) Compared with the existing drought index, the SCWDI shows obvious advantages in drought monitoring of spring maize. (2) In the whole growth stage of spring maize, the change trend of SCWDI was small in the temporal series (−0.012/10a). Spatially, the drought trend of spring maize was mainly decreasing (−0.14~0/10a). The drought frequency of spring maize in each growth stage was mainly light drought in most regions. (3) The three main drought cycles of spring maize in Songnen Plain were 29 years, 10 years, and 4 years. In the next few years, the drought of spring maize in Songnen Plain was controlled by the first main cycle, and the drought years may increase, which should be prevented. The research was expected to provide technical support for crop drought monitoring and agricultural disaster prevention." @default.
- W4366772016 created "2023-04-25" @default.
- W4366772016 creator A5001435546 @default.
- W4366772016 creator A5070100253 @default.
- W4366772016 date "2023-04-21" @default.
- W4366772016 modified "2023-09-30" @default.
- W4366772016 title "Spatial-Temporal Characteristics of Spring Maize Drought in Songnen Plain, Northeast China" @default.
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- W4366772016 doi "https://doi.org/10.3390/w15081618" @default.
- W4366772016 hasPublicationYear "2023" @default.
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