THE SCREENING OF MUTANT LIBRARY FOR RICE VARIATIONS NIPPONBARE AND "9311" BY NITROGEN ION BEAM AND γ-RAYS IRRADIATION THE SCREENING OF Bacillus subtilis STRAIN WITH HIGH-PRODUCED ANTIMICROBIAL SUBSTANCE USING N~+ ION IMPLANTATION Effects of low-energy N+ ion beam irradiation on the main physiological characteristics of rice(O.sativa)with different chromosome sets in seedling period EFFECT OF PULSE LASTING TIME OF ION IMPLANTATION ON THE GROWTH OF Hericium ernaceus Compound Processing Effects of HVEF and Low Energy N+ Ion on Streptomyces Aureofaciens