我县李种植面积有 4 0 0 0多hm2 ,每年春季均有相当多的果园发生不同程度的枯枝小叶症 ,造成李“繁花无果” ,甚至“见蕾不见花”的现象普遍发生。笔者研究查明此症属于缺硼症 ,施用硼肥能有效防止缺硼症状的发生。1　缺硼症状　　李的缺硼症主要发生于春季的萌芽抽梢期 There are more than 4000 hm2 cultivated areas in our county. Each year, a considerable number of orchards have withered leafhoppers of varying degrees, resulting in the widespread loss of plum blossoms and even the “see the buds without flowers” phenomenon occur. The author studies to identify the disease belongs to boron deficiency, the use of boron can effectively prevent the occurrence of boron deficiency symptoms. 1 lack of boron symptoms  Lee’s boron deficiency occurs mainly in the spring budding shoot period