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泡桐是我县重要的速生优质用材树种,群众喜爱栽植。现在全县已栽植泡桐树820万株。近几年来泡桐丛枝病发生普遍,不仅泡桐大树发病严重,泡桐苗期也有一定数量的丛枝病发生,直接影响着泡桐生产的发展,所以,开展对泡桐丛枝病的试验研究,是生产上的迫切要求,是科研上的重要课题。一、试验内容与方法本试验是在禹县褚河公社余王、阁街,小刘三个大队泡桐试验林中进行的,面积为500亩,共7202株,均为1977年春定植,
Paulownia is an important fast-growing high-quality timber species, the masses love to plant. Now the county has planted 8.2 million Paulownia trees. In recent years, Paulownia witches broom disease occurs generally, not only Paulownia trees serious disease, Paulownia seedling stage also has a certain number of broom disease, a direct impact on the development of Paulownia production, therefore, to carry out the Paulownia witches broom disease research is The urgent requirement in production is an important subject in scientific research. First, the test content and methods The test was Yu Yu Chu River commune Yu Wang, Court Street, Xiao Liu Paulownia trial of three brigades, an area of 500 acres, a total of 7202 strains, all in 1977 spring planting,