温州蜜柑缺铜、硼、锌及多硼症

• 作 者: 佘正之 温云祥
• 出 处: 四川农业科技
• 发表日期: 1986年02期
• 关键词: 温州蜜柑 秋梢 果梗 缺铁症 积留 缺硼症 生理酸性肥料 硫酸按 缺锌 碱性肥料

温州蜜柑缺铜症一、症状特征缺铜会使果树萎缩矮化,减少产量,夏秋梢出现水泡状的胶包(内有褐色胶样物质积留),时间久了胶包就会破裂。秋梢的表面出现褐色,顶部桔死,叶面会出现缺铁症般退绿。另外,叶脉间黄化,退绿,叶面出现黄褐色或黑褐色的大型斑点,往往在冬季落叶。在果实上缺铜症也有表现,最初果梗部附近的果皮表面出现黑褐色斑状。随着缺铜症的加重,斑点扩散到整个果(?),而且会造成裂果、落果和果皮粗糙,果肉水分减少,果汁中的酸及维生素C含量降低。

Wenzhou, lack of copper citrus symptoms First, the symptoms of symptoms Copper deficiency will dwarf the fruit trees dwarf, reduce the yield, summer blisters appear blister-shaped plastic bag (with brown plastic material retention), over time the plastic bag will rupture. The surface of the autumn tip appears brown, the top of the orange die, there will be iron deficiency like foliage back green. In addition, between the veins yellow, green back, yellowish brown or foliage appear large spots, often deciduous in winter. There is also copper deficiency in the fruit performance, the first fruit stem near the surface of the peel dark brown spots. As copper deficiency aggravates, the speckles diffuse throughout the fruit (?) And cause split fruits, rough fruit and peel, reduced pulp moisture and reduced acid and vitamin C content in the juice.