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柑桔黄化症是褐色土栽培柑桔普遍发生的一种生理性病害。近年来陇南地区发展温州蜜柑1.6万多亩,但因该区为褐色土壤,刚建园不久就出现叶片褪绿症,造成植株生长不良,延迟结果或落花落果,有的甚至7、8年生时还没有产量,严重影响了生产发展。我们经过5年多的试验研究,基本掌握了其黄化原因及防治对策。一、黄化症状柑桔黄化多数于苗期发生,定植后逐年加重。黄化植株在果园中呈现轻重不同的斑状分布,在同一
Citrus yellowing is a physiological disease commonly occurred in brown soil culture citrus. In recent years, Longnan area development of Wenzhou Satsuma 16000 acres, but because of the area is brown soil, just green garden leaf chlorosis soon appeared, resulting in poor plant growth, delayed or falling flowers, and some even 7-8 years old No production yet, seriously affecting the development of production. After more than five years of experimental research, we have basically mastered the causes of yellowing and prevention and control measures. First, yellow symptoms Citrus yellow most occurred in seedling stage, increased year after year after planting. Etiolated plants in the orchard showed different severity of the patchy distribution in the same