Abstract: Using commodity water soluble fertilizer as contrast, a field plot experiment was conducted to study the effect of the new water soluble fertilizer—ammonium polyphosphate (T1), industrial-grade ammonium phosphate (T2) and urea phosphate (T3) on tomato yield, quality and soil nutrient. The results showed that T1 and T3 could promote tomato growth. T1 increased the stem diameter by 23.79%, 53 days after engraftment. 93 days after engraftment, SPAD value of T1 was 35.45, increased by 32.03% than CK. The yield of T1 and T3 were increased by 12.64% and 4.74% than CK, respectively. Compared with CK, the soluble sugar content of tomato fruit, the total nitrogen content, soil organic matter and EC were increased by 9.17%, 2.5%, 13.7% and 81.1%, respectively, soil pH was reduced by 0.07 and NO3-N content was higher. In summary, the application effect of ammonium polyphosphate was the best. |