论文部分内容阅读
桃树缺硼症及防治答陕西省淳化县读者冯田力缺硼症状；桃树缺硼症一般与苹果相似。枝条顶端易枯死，在枯死部下方发很多新生枝条，成“帚状”，枝条韧皮部变褐；枝干易流胶；叶片窄小、皱缩，叶柄、叶脉弯曲质脆易断，叶色淡黄，果实畸形，色泽不一。缺硼轻者致使树势衰弱...
Peach boron deficiency disease and prevention and treatment of Chunhua County, Shaanxi Province, Feng Tianli lack of boron symptoms; peach boron deficiency generally similar with apples. The top of the branches is easy to die, a lot of new branches are made under the dead parts, becoming “broom-like”, the phloem of the branches is brownish; the branches are easy to flow; the leaves are narrow and wrinkled; the petioles and leaves are crisp and fragile; Yellow, fruit deformity, different color. Lack of boron caused by weak light tree weak ...