1.喷施前硼肥要充分溶解。叶面喷硼大多用硼砂,而硼砂在40℃热水中才易溶解,因此在配制硼砂溶液时,必须先用60～70℃的热水溶解,搅动至无沉淀为止,再加水稀释到所需的浓度。硼液配制好后应及时喷施,以免久置使硼结晶析出,影响硼肥的效果。2.严格掌握喷硼的浓度和次数。叶面喷硼 1. Before spraying boron to be fully dissolved. Borax sprayed on the foliage is mostly borax, while borax is easily dissolved in hot water at 40 ° C. Therefore, when preparing the borax solution, it must be dissolved in hot water at 60-70 ° C and agitated until no precipitate is obtained, diluted with water Required concentration. Boron solution should be promptly sprayed after preparation, so as not to leave the boron crystallized for a long time, affecting the effect of boron. 2. Strict control of boron concentration and frequency. Foliar boron spraying