The results also showed that the VAM fungi infection rate to the tea roots was higher in these areas than others,but the difference at the VAM fungi spore density in soils in different tea gardens was very great.

• 豫南各茶园VA菌根真菌的自然侵染率普遍较高,孢子密度差异较大,孢子密度及自然侵染率一般随土层的加深而降低。