摘要
对云南省华山松丛枝病进行了调查研究 ,结果表明 :在云南省 5个地、州 2 6 86 7hm2 的华山松林中 ,有丛枝病发生的面积为 1 5 93 3hm2 ,占调查总面积的 5 9 3 %.华山松丛枝病严重影响华山松的种实产量 ,结果量和产粒量分别下降 44%和 2 7%.
A preliminary study on Pinus armandii witches′ broom showed that the area of Pinus armandii forest investigated was up to 2 686.7 hm 2 in 5 municipalities of Yunnan. In the investigated forest area, 1593.33 hm 2, about 59.3% of totally investigated Pinus armandii forest was infected by witches′ broom. The disease is seriously influence fruition and output of seed of Pinus armandii. Both fruition and output of seed come down 44% and 27%.
出处
《西南林学院学报》
2003年第2期68-70,共3页
Journal of Southwest Forestry College
基金
国家自然科学基金资助项目 (30 2 6 0 0 89)
云南省教委基金资助项目 (9832 0 16 )
