Using tomato growing soil in solar greenhouse as test material,five kinds of fertilization treatments were set up by micro-area test,which were:no fertilizer（CK）,100% chemical fertilizer（100CF）,100% straw（100S）,25% straw substituted fertilizer（75CF+25S） and 50% straw substituted fertilizer（50CF+50S）.The results showed that the total phosphorus of soil increased significantly when the chemical fertilizer was applied by 100CF and 75CF+25S,increased 36.6% and 15.2% compared with CK,respectively.When the straws of 50CF+50S and 100S were applied,the total phosphorus of the soil was decreased by 2.5% and 6.0%,respectively.In each fertilization treatment,the order of inorganic phosphorus content from high to low was:HCl-Pi＞ NaOH-Pi＞ NaHC0₃-Pi＞ Resin-Pi.The percentage content of Resin-Pi and HCl-Pi was the highest in 75CF+25S treated soil,while NaHC0₃-Pi and NaOH-Pi were the highest in 50CF+50S treated soil.When only chemical fertilizer（100CF） was applied,the soil organic phosphorus percentage increased significantly,by 29.5%,while the Residual-P percentage decreased significantly,by 24.7%.When straw was used instead of chemical fertilizer,the content of organic phosphorus percentage decreased gradually with the increase of straw addition,while the content of Residual-P percentage increased gradually with the increase of straw addition.The content of high stable organic phosphorus percentage in unfertilized soil（CK） was significantly higher than that of high active organic phosphorus.The content of high active organophosphate in all fertilization treatments was significantly higher than that of high stable organophosphate.When using straw instead of chemical fertilizer,the more straw application,the higher the content of high active organophosphate.tomato yield of 75CF+25S treatment was not significantly different from that of 100CF,50CF+50S and 100S treatment.Tomato yield decreased significantly relative to 100CF treatment,but still significantly higher than that of CK.To sum up,this study shows that 75CF+25S treatment is a better combination of fertilization,which provides a reference for the efficient utilization of soil phosphorus in the facility.