Through experiments done during 1988 ̄1995, the soil water use rate and soil wateruse efficiency of main crops were analyised. They are as follows: (1) The preclipitation use rate (PUR): spring wheat use 52. 49% of precipitation others are peal 48. 35%, Potato 82. 56%, Flax 63.17% and Proso 75. 27%. The PUR in slope land is higher than. that of table land or table land. (2)The soil water use rate (WUR) are respectively 50. 77%, 47. 71 %, 61.89%,50. 29% and 59. 80% according above order. The WUR has the same ...
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