圃地杉木苗“穿泥裤”现象发生原因初探

Preliminary Research on Preduction Caurse of Muddy Trousers Phenomenon of Cunninghamia lanceolata in Seedling Plots

我国南方杉木苗围中的一种新的非侵染性病害:“穿泥裤”现象,其发病率达65%。经初步调查分析表明:苗木密度小、圃地土壤含沙量高、立夏前后雨水多,发病率就高,就此提出了防治方法。

This paper put forward a new kind of non-infection disease-muddy trousersphenomenon in seedling plots of Cunninghamia lanceolata in southern of our country. It's indioe-nce of a disease has arrived 65%. According to investigate and analisys the result shows: thelower the seedling density and the more contens sends in the soil of seedling plots and beforeor after the beginning of Summer, the higher incidence rate. Then put forward prevention method according to the investigated results.