福建省葡萄黄化落叶病病因及防治研究
Research on the Causes of Grape Leaf Bllght and Its prevention In Fujian
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摘要: 葡萄黄化落叶病,是我国南方葡萄的生理病害,流行为害颇大,其主要症状是大量落叶影响光合作用,使葡萄果实品质下降,成熟期延迟。病因:南方雨季集中在春夏季节而其时间偏长,骤然转入高温气候,根部生态环境不适应,造成蒸腾与吸收水分失调而引起的。防治方法:改善根部生长环境、增施有机质肥料,地膜覆盖,培养优良树相,喷施防护剂,适当控制产量。Abstract: Grape leaf blight is a physiologic disease in south China.It prevaled widely and harmed seriously.The main symptom is to drop leaves in large scale and to effect its photosynthesis.As a result.the quality of fruit was graetly deteriorated.and the maturity of fruits delayed.The causes of this disease was supposed as follows:the raining season in south China is usually concentrated in Spring and Summer with long duration.When climate turned into high temperature,the roots of grape were not able to suit that ecologic environment in rhizosphere,thus caused an imbalance between absorption and evaporation.The methods to prevent this disease are:to improve the rhizosphere environment of growing roots:to apply more organic manures; to cover the plastic film on the ground; to build good plant form; to spray pesticide; and to suitably control the yields of fruit.
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