---

期 刊 ：植物保护学报 1997年

关键词：西洋参疫病菌；病菌传播；水滴飞溅；

Keywords:Phytophthora cactorum, dispersal of sporangia zoospores, splash dispersal,

摘 要 ：本项研究通过实验模拟手段揭示了水滴飞溅散布对西洋参疫病菌传播的机制。从定量的角度确立了西洋参疫病菌传播数量与水平距离、水滴碰撞速率的数学模型: Ln(Y)=b_0 b_1D b_2V 在自然雨滴的直径范围内,垂直下落高度在3.5m以内,飞溅传播直径约1m,在三维空间里,以低于碰撞源水平面的传播效果最为明显。

Abstract:Sporangia zoospores from Phytophthora cactorum of American ginseng were used to demonstrate and quantify the effects of splashing water drops on dispersal of the pathogen inocula. A multiple regression model was established to describe correlations betw

---