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橡胶树是斯里兰卡重要的栽培作物之一,有多种经济上重要的病害危害。为方便起见,把其分成叶、茎枝、割面和根部四类。一、叶部病害1、白粉病(Oidium heveae)白粉病是由子囊菌橡胶粉孢霉引起的最常见的叶部病害。它侵害越冬后不久新长出的嫩叶,导致第二次落叶。病害的传播和严重程度取决于越冬模式、品系的感病性和换叶期的气候条件。
Rubber tree is one of Sri Lanka’s major cultivated crops, with a number of economically important disease hazards. For convenience, it is divided into leaves, stems, cut surface and root four categories. First, leaf disease 1, powdery mildew (Oidium heveae) Powdery mildew is the most common foliar disease caused by Ascophyllum rubber powdery mildew. It infringes the newly growing young leaves shortly after winter, leading to the second deciduous. The spread and severity of the disease depends on the pattern of overwintering, the susceptibility of the line and the climatic conditions during leaf replacement.