苹果生产中存在严重落花落果现象,为此,山西省吕梁地区农业学校韩唐则等对元帅,青香蕉等五个品种苹果树,在花期进行了不同浓度的喷硼、防落素效果对比试验。结果表明,喷防落素和硼均可明显提高苹果的座果率,其中喷防落素比硼好。在喷硼 For this reason, Han Tang, an agricultural school of Luliang Prefecture in Shanxi Province, conducted a comparative experiment on the effects of spraying boron and reducing phosphorus on five varieties of apple trees such as Marshal and Green Banana during flowering. . The results showed that both spray-sprayed boron and boron could obviously improve the fruit-setting rate of apple, and the spray-sprayed boron was better than boron. In boron spraying