Effects of different amounts of potassium phosphite on the growth,yield and quality of small tomato

SUN Yucui; LI Yingying; LI Heng; ZHANG Zhongzheng; MA Hang

doi:10.16861/j.cnki.zggc.202423.0755

Abstract：Solid potassium phosphite was chosen as the growth aid in order to investigate its effects on the development,yield,and quality of Huangjin No.1 small tomato.Five treatments including conventional fertilization(CF),0％potassi-um phosphite(Y0),0.2％potassium phosphite(Yl),0.6％potassium phosphite(Y2),and 1％potassium phosphite(Y3)were established in a greenhouse for fertilizer efficiency verification experiments.The results indicated that com-pared to the conventional fertilization treatment CF,the plant height(33 days after planting)of small tomato treated with solid potassium phosphite Y1,Y2,and Y3 significantly increased by 15.61％,21.91％,and 24.18％,respectively.The num-ber of inflorescence(65 days after planting)rose by 13.63％,15.26％,and 18.72％,respectively,and the total yield rose by 16.32％,22.15％,and 23.79％,respectively.Additionally,compared to the conventional fertilization treatment CF,the protein,soluble sugar,and vitamin content in small tomato treated with solid potassium phosphite Y1,Y2,and Y3 all showed increases,with the soluble sugar content showing the most significant increase,increasing by 50.31％,81.90％,and 95.16％,respectively,while the organic acid content significantly decreased by 32.06％,36.24％,and 39.72％,respec-tively.Overall,adding 1％solid potassium phosphite has the best promoting effect on the growth,yield,and quality of small tomato.