贵州黄精病害种类及发生情况研究初报

Preliminary Study on Disease Species and Occurrence of Polygonatum sibiricum Delar.in Guizhou

[目的]调查贵州黄精的病害种类及发生情况。[方法]采用普查方式,于2004～2005年对贵州省凤冈县黄精GAP试验示范基地栽培黄精的病害种类和发生情况进行了全面调查,初步弄清了基地栽培黄精的病害种类及主要病害的发生情况。[结果]基地栽培黄精病害共有7种,新记录3种,其中叶斑病、黑斑病、炭疽病发生严重,确定为优势种。优势种发病症状明显,主要危害叶片,7～9月发生严重,鉴定发现其病原均属半知菌亚门。进一步研究发现,叶斑病发生与土壤肥力水平、间套作方式、土质、地势等密切相关。[结论]该研究为栽培黄精的病害防治提供了理论指导。

[Objective] The aim was to investigate the disease species of Polygonatum Sibiricum Delar. （P.sibiricum） and occurrence in Guizhou. [Method] A general survey method was adopted to completely investigate the diseases species and occurrence circumstance of P, Sibiricum cultivated in GAP test demonstration base in Fenggang, Guizhou in 2004-2005, and the disease species and the major disease occurrence of the cultured P. sibiricum in the test demonstration base were made clear preliminarily. [Result] There were total 7 kinds of diseases of P. sibiricum cultivated in the base and 3 sorts were the new records, among which, Alternaria sp., Septoria sp., Colletotrichum sp. were occurred severely, and was determined as dominant species. The dominant species had obvious diseases symptom and mainly harmed leaves, their severe occurrence was from July to Sep., and their pathogen was found all to belong to Deuteromycotina by identification. Through the further research on Alternaria sp. it was discovered that its occurrence was related closely to the fertility of soil, intercropping mode, soil quality, terrain etc. [Conclusion] This study provided the theoretical guidance for disease control of cultured P. sibiricum.