Study On The Effect Of Ammonium Polyphosphate With Different Degree Of Polymerization And Monoammonium Phosphate On Fruits And Vegetables

The utilization rate of common phosphate fertilizer is very low,usually only 10% to 25%,making phosphorus a major factor limiting plant growth and development.It is imperative to develop high-efficiency new phosphate fertilizer and formulate a reasonable and efficient method of compounding.The new type of water-soluble phosphate fertilizer has high content of nitrogen and phosphorus,strong water solubility,and has chelation and sustained release.The domestic agricultural research on ammonium polyphosphate started late and is currently in the research and development stage.In this experiment,cucumber and tomato were used as research objects,and the newly developed ammonium polyphosphate fertilizer was studied for fertilizer efficiency.The soil culture test,pot experiment,field test and hydroponic test were used to study the ammonium polyphosphate and phosphoric acid of different polymerization degrees.The effect of ammonium and monoammonium phosphate combined with ammonium polyphosphate on the growth of cucumber and tomato.The main conclusions are as follows:1)Soil culture experiments show that this ammonium polyphosphate has a certain sustained release property,which can gradually increase the effective phosphorus content of the soil.2)Hydroponics test showed that the application of high polyammonium phosphate can promote the growth of tomato plants,and the application of monoammonium phosphate can promote the absorption of phosphorus by tomato plants.3)Potted cucumber test showed that the application of monoammonium phosphate increased the effective phosphorus content of the soil in the early stage of plant growth and promoted the growth of seedlings.The application of ammonium polyphosphate significantly increased the phosphorus uptake of the plants in the result stage and promoted the growth of the plants.The combination of 7:3 can promote the absorption of phosphorus by plants.The growth index of plants is higher than that of monoammonium phosphate or ammonium polyphosphate,which is a better method of compounding.The yield of cucumber treated by each phosphate fertilizer was not significant,and the yield of cucumber with 3:7 was higher,and the ratio of 5:5 was higher than that of single application of monoammonium phosphate or ammonium polyphosphate,and ammonium polyphosphate was applied.7:3 combined application increased the sugar content of cucumber and reduced the titratable acid content.4)Potted tomato experiments showed that the application of ammonium polyphosphate could promote the growth of seedlings.The application of ammonium polyphosphate could promote the absorption of phosphorus by flowering plants.The accumulation of phosphorus was 95.63% higher than that of monoammonium phosphate and ammonium polyphosphate.70.64%,promote plant growth,7:3 combined application can promote the absorption of phosphorus by plants,phosphorus accumulation is 51.06%,44.28% higher than that of monoammonium phosphate and ammonium polyphosphate.5)Daejeon tomato test showed that the application of monoammonium phosphate could promote the absorption of phosphorus by seedlings.The application of ammonium polyphosphate could significantly increase the phosphorus uptake of mature plants,which was higher than that of monoammonium phosphate and ammonium polyphosphate.%,50.22%,significantly increased the growth indicators of tomato mature stage,7:3 combined application promoted the absorption of phosphorus in the seedling and fruiting stage,and promoted plant growth.The application of high polyammonium phosphate increased the yield of tomato,which was 59.81% and 50.22% higher than that of monoammonium phosphate and ammonium polyphosphate,respectively.The application of ammonium polyphosphate could improve the quality of tomato,and the combination of 3:7 could improve the quality of tomato.,higher than other formulations and monoammonium phosphate treatment.