桃树缺硼症在我市发生普遍,危害严重。轻者致使树势衰弱,桃果畸形,产量低,品质差;重者枝条枯死,有芽无花,造成绝产。现将我们近年来的观察研究结果简述如下,供参考。桃树缺硼后,枝条韧皮部变褐,剪断嗅之有异昧,顶端易枯死,枯死枝基部丛生嫩枝;叶片肥厚,皱缩,叶色淡黄,叶脉弯曲易断;花芽膨大前外观正常,膨大后鳞片失水萎缩,花芽沿枝条从上而下逐渐脱落,果实自谢花一 Peach boron deficiency in our city is widespread, serious harm. The light led to weakening of the tree, peach fruit deformity, low yield, poor quality; heavy branches dead, buds without flowers, resulting in abortion. Now we observe the research results in recent years summarized as follows, for reference. Peach lack of boron, the branches of the phloem brown, cut sniffing different ignorant, the top is easy to die, withered twigs at the base twig; leaf hypertrophy, shrinkage, leaf color yellow, veins easily broken; , Enlargement of the scale loss of water shrinkage, buds along the branches gradually fall off from top to bottom, the fruit from Xiehua a