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- W2351321972 abstract "Daily meteorological drought composite indexes(CI) from 1961 to 2010 were calculated based on daily air temperature and precipitation data of observation stations in Shanxi Province.By comparison of CI with soil moisture status observation data from the near crop stations from 1992 to 2010,evaluation criterion of CI for maize in drought was revised according to the region and growth stages.Quantitative assessment model of maize drought losses in Shanxi province was also constructed based on the maize unit yield during the past 50 years.The results showed a significant discrepancy between evaluation criterion of CI for maize in drought and traditional classification of meteorological drought category was observed.For example,evaluation criterion of CI for maize in drought in Southern Shanxi was ≤-1.2 for stages from seeding to emergence,jointing to teaseling and milky maturity to full maturity,≤-1.3 for stage from emergence to jointing,and ≤-0.9 for stages from teaseling to milky maturity.Accumulative drought index of the whole growth stages and meteorologically influenced yield of maize were significantly positive correlated,with a coefficient of correlation of 0.9335 for Northern Shanxi,0.6929 for Middle Shanxi and 0.8041 for Southern Shanxi.By using quantitative assessment model of maize drought losses in Shanxi province,simulated yield and actual yield passed the Pearson significance test,and production loss of maize in drought can be assessed more accurately with these models." @default.
- W2351321972 created "2016-06-24" @default.
- W2351321972 creator A5060892507 @default.
- W2351321972 date "2013-01-01" @default.
- W2351321972 modified "2023-09-24" @default.
- W2351321972 title "Impact of drought on maize yield of Shanxi Province during the past 50 years based on revised meteorological drought composite index" @default.
- W2351321972 hasPublicationYear "2013" @default.
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