Effects Of Irrigation Quantity And High Potassium Compound Fertilizer On Tomato Yield And Quality

Tomato is one of the main planted vegetables in the facilities in China,and can usually obtain good economic benefits,In recent years,with the continuous development of facility gardening,Tomato production moves in a more professional direction,However,in production,due to the limitation of cultivation techniques,Often good yield and quality are not obtained,but also cause a waste of fertilizer and water resources,Therefore,regulating the quality of tomato through water and fertilizer measures has become one of the research hotspots.In this study,strawberry tomato was used as the test material,and the pot experiment was used,Different water irrigation volumes and different fertilization treatments were set up,respectively,Study its effect on tomato yield and quality.Set the irrigation volume to be 90%(CK),70%(W1),and 50%(W2)of t the field holding capacity in 3 treatments,The effects of different irrigation amounts on the growth,development,yield and quality of tomato were studied;Set up three treatments:base fertilizer and top dressing are ordinary compound fertilizer(CK),base fertilizer is ordinary compound fertilizer,top dressing is high potassium fertilizer(F1),base fertilizer and top dressing are both high potassium fertilizer(F2),The effects of single application and combined application of two fertilizers on tomato growth,yield,quality and plant nutrient absorption were studied,aiming to provide technical support for regulating tomato yield and quality through water and fertilizer technology.The main findings are as follows:1.When the irrigation volume is 70% of the field holding capacity(W1),The soluble sugar,soluble protein content,vitamin C content,sugar-to-acid ratio,yield per plant and soil EC value of tomato fruit are significantly higher than CK,When the irrigation volume was 50%(W2)of the field water holding capacity,the soluble sugar content,titratable acid content,soluble protein content,vitamin C content,sugar-acid ratio and soil EC value were significantly higher than CK.2.When the base fertilizer is an ordinary compound fertilizer and the top dressing is a highpotassium fertilizer(F1),the vitamin C,soluble protein,soluble sugar content and sugar-acid ratio of the tomato are significant Higher than CK,titratable acid content is significantly lower than CK;When both base fertilizer and topdressing were high potassium fertilizer(F2),the tomato vitamin C,soluble protein content and glyc acid ratio were significantly higher than CK,and the titratable acid content and single strain production were significantly lower than CK;When the base fertilizer is an ordinary compound fertilizer,the top-dressing is high-potassium fertilizer(F1)and the base and top-dressing are high-potassium fertilizers(F2),the soil pH is significantly higher than CK;When the base fertilizer and top dressing are both high potassium fertilizers(F2),the total potassium content in the soil is significantly higher than CK,and the total phosphorus content is significantly lower than CK.3.When the base fertilizer is ordinary compound fertilizer and the top dressing is high potassium fertilizer(F1),the nitrogen content and potassium content of the roots,stems and leaves of the plant are significantly higher than that of CK,and the phosphorus content is significantly lower than that of CK;When both the base fertilizer and the top dressing are high potassium fertilizer(F2),the nitrogen content and phosphorus content of plant roots,stems and leaves are significantly lower than CK,and the potassium content is significantly higher than CK.In summary,when the irrigation volume is 70% of the field holding capacity,the yield per plant of tomato can be increased,When the irrigation volume is 50% of the field water holding capacity,the quality of tomatoes is the best;When the base fertilizer is an ordinary compound fertilizer,the top-dressing is high-potassium fertilizer,and the base and top-dressing are both highpotassium fertilizers,the quality of tomatoes can be improved.There is no significant difference in yield between the two and the control,The base fertilizer is an ordinary compound fertilizer,and the yield per plant when the top-dressing is high-potassium fertilizer is significantly higher than when the base and top-dressing are both high-potassium fertilizers.