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适龄荔枝(15～20年生)“花而不实”、落花落果及产量低、低而不稳的现象,是多年来悬而未决的生产问题.不同浓度硼(B)处理的结果表明:缺B影响荔枝授粉受精,造成早期落花落果.喷施B0.2～0.4%、B0.2%+KH_2PO_40.2%和地施B4～5两/株能提高荔枝叶片中B、N、叶绿素含量及单果重量,显著提高荔枝单株产量.B能促进荔枝花粉萌发和花粉管生长,有利于受精及提高座果率.
The result of many years of unprocessed production of Litchi chinensis (15-20 years of age), “Blossoming but not solid”, falling flowers and deciduous fruits, and low and unsteady yield was the result of many years of boron (B) treatment. B affected the litchi pollination and fertilization, which resulted in the early drop of flowers and deciduous fruits.It was found that B0.2-0.4%, B0.2% + KH2PO40.2% and B4-5 / B application could increase B, N and chlorophyll content in litchi leaves, Single fruit weight significantly increased the yield of litchi per plant.B can promote the litchi pollen germination and pollen tube growth, which is good for fertilization and fruit set rate.