稀土积累与油菜菌核病发生的关系研究

Relationship between rare earth accumulation and rape sclerotiniose.

在试验生态小区的土壤中 ,模拟长期使用稀土 ,以探讨稀土积累与油菜菌核病发生发展的关系 .结果表明 ,0 .5 %、1%、3%、5 %、7%、10 %吸附容量和 0 6kg·hm-2 的稀土以及土壤中 30kg·hm-2 和 0 6kg·hm-2 的稀土复合肥添加剂对油菜菌核病自然发生的病情指数和病株率影响无显著差异 ;对人工接种发病后的病斑绕茎度、病斑扩展速率。

Field plot experiment with long term application of rare earth fertilizers showed that 0\^5～10% of adsorption capactiy and 0\^6kg·hm\+\{-2\} of rare earth application had no remarkable effect on natural incidence of rape sclerotiniose,ratio of diseased plants,natural disease index,expanding rate of diseased spots,yield of single plant,and 1000 seed weight.