福建枇杷锈斑病调查与分析

Survey and Analysis of Rust Spot Disease Infecting Loquat Fruit in Fujian

锈斑病是普遍发生在枇杷生产上的一种生理性病害。近年来,枇杷产区锈斑病日趋严重,通过调查分析发现,不同地区、不同地点、不同时期和同一植株不同方位的枇杷果实发病情况各不相同。同一地点外围果比内膛果发病严重;云霄山顶不同方位果实发病比仙游地区严重;"早钟6号"抗病性较强;牛皮纸套袋抗病效果最好。因此,在生产中应采取不同的技术进行防治。

The rust spot disease is one of physiological disorders infecting loquat fruit and occurs generally in the loquat production. In recent years, rust spot disease occurs heavily day by day in loquat fruit in the loquat producing area. Our survey and analysis of this disease showed that occurrence of this disease varied with regions, localities, stages, and positions of the same loquat plant. The loquat fruits at the periphery of the same locality were more heavily infected with the rust spot disease than those at the inner side of the same locality; the fruits were more seriously infected with the rust spot in different orientations in the summit of Yunxiao Mountain than those in the Xianyou district. Loquat cultivar ‘Zaozhong 6＇ was higher in disease resistance. Wrapping of fruit with kraft paper was optimum in resistance to the disease. Therefore, various methods should be used to control this disease in production of loquat.