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Research Papers: Agricultural Species AllCurrent 11 Record(s): A STUDY ON CAUSES OF HIGHª²YIELD WINTER WHEAT IN TIBET PLATEAU BASED UPON SIMULATION OF CROP PRODUCTION Vol.13(1998), No.4 A study on rainwater collection and regulation and yield-increase efficiency of wheat planted on ridges and corn in furrows with plastic canopy on striped rainfed farmland ANALYSIS OF ROOT SYSTEM GROWTH IN RELATION TO SOIL WATER EXTRACTION PATTERN BY WINTER WHEAT UNDER WATER-LIMITING CONDITIONS Vol.13(1998), No.3 EFFECTS OF WILD PLANT SAPS ON CROPS NUTRITION Vol.13(1998), No.2 Evaluating protein quality of four kinds of cultivated wild vegetables in Nanjing Vol.16(2001), No.3 On potential grain yield increase in the soil loss region of Loess Plateau Vol.16(2001), No.4 On potential yield increase of dryland winter wheat on the loess tableland Vol.15(2000), No.2 Risk theory and method and its initial application in grain yield Vol.16(2001), No.3 Simulation of wheat potential productivity on Loess Plateau region of China Vol.16(2001), No.2 Studies on the soil-water dynamics of winterª²wheat field and waterª²saving mechanisms under subª²irrigation condition in Beijing areas Vol.15(2000), No.3 The EOF analysis on wheat dry-hot-wind in Henan Province Vol.16(2001), No.1