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- W2392859812 abstract "According to the statistical analysis of long-term natural rainfall data from 1961 to 1999,combining field location and micro-area experiment,the four indexes for drought disaster evaluation were put forward based on the analysis of soil water content balance,namely water deficiency index,withering index,rainfall index,and drought index.Using the drought index,the year type for crop production in Qianshan area of Qinghai province during 1961~1999 is classified.The results showed that the frequency of extremely heavy drought,heavy drought,middling drought,light drought and rainy year was 1 a,3 a,19 a,11 a and 5 a respectively,and the corresponding probability was 2.6%,7.69%,48.72%,26.21% and 12.82%.In the dry-farming region of eastern Qinghai,there is an extrusive inconsistency between crop requirement and water consumption,and the occurrence rate of drought disasters is very high,which is changeful and is difficult to forecast and control.The effective measure for drought resisting is outer water complementarily." @default.
- W2392859812 created "2016-06-24" @default.
- W2392859812 creator A5070881949 @default.
- W2392859812 date "2007-01-01" @default.
- W2392859812 modified "2023-09-23" @default.
- W2392859812 title "Natural Rainfall Features and Its Relation with Drought Disaster in Eastern Dry Area of Qinghai Province" @default.
- W2392859812 hasPublicationYear "2007" @default.
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