施用pp333可抑制苹果树体营养生长、增加果实产量,提高果实钙含量、减轻苦腐病,Y.Luo在英国研究了pp333对果实硬度、矿质含量和可溶性固形物总量的影响。在始花期的落瓣期喷pp333(1500毫克/升),果实硬度和钙、镁、磷含量增加,而可溶性固形物总量低于对照,小果期、采收前喷施三处理。在始花期落瓣期和小果期喷施,果实钾含量低于对照和采收前喷施二处理。在盛花期 Application pp333 can inhibit apple tree vegetative growth, increase fruit yield, increase fruit calcium content, reduce bitter rot, Y.Luo in the United Kingdom studied pp333 on fruit firmness, mineral content and total soluble solids. At the beginning of flowering period, pp333 (1500 mg / L) was sprayed on the shoots with reduced fruit firmness and calcium, magnesium and phosphorus contents, while the total soluble solids content was lower than the control and the small fruit stage. In the initial flowering stage petal and small fruit spraying, fruit potassium content is lower than the control and preharvest spray two treatment. In full bloom