A test was conducted in field to comp are efficiencies for chemical ferti lizer,organic manure,biological c ompost,or-ganic
-inorganic compound fertiliz er and biological organic and inorganic compound fertilizers.The resul ts showed that:applying the
biological -organic -inorganic compound fertilizer could improve t he structures of soil,ameliorate fe rtility of soil,raise the nutrition providing capacity in soil and increase soil biological activ ity.Compared with that of soil before test,soil B.D.decreased by 0.17,total porosity
increased by1.45%,organic matter increased by 0.1%,total N,P,K and available N,P,K increased by different degree,total number of th ree sorts of microorganisms increased by 1.64times,the activities of in vertase,urease and phosphatase increased,respective ly.Meanwhile,applying biological-organic -inorganic compound ferti lizer also could promote the plant growth and development,en hance yield,improve the quality.Co mpared to the treatment of no fertili zer,increased yield by83.5%,the difference was great sign ificant,the contents of nitrates decreased by 113mg ·kg -1 ,the contents of vitamin Cincreased by 0.29mg ·kg -1 .The results indicated that the comp rehensive functions of the biologic al -organic -inorganic compound fertilizer was prior to the other sorts fertiliz er,the economic and ecological benefit was obvious.