(1) Plate counting results showed the amount of bacteria in
kiwifruit orchard soil increased firstly and finally decreased
with the increase of planting age, and the amount of fungi
increased after planting kiwifruit and had no significant
change with planting ages. The amount of actinomycete has
no remarkable change as planting kiwifruit.
(2) Soil microbial biomasses C and N were both increased firstly
and then decreased with the increase of planting age, and
five aged kiwifruit orchard soil had the highest microbial
biomasses C and N.
(3) Biolog analyses showed that AWCD, Simpson index, Shannon
index and McIntosh index were highest in five aged kiwifruit
orchard soil and lowest in eleven aged kiwifruit orchard
soil. Relative utilization value of carbon sources showed that
it tended more conducive to using carbohydrate and amino
acids and less conducive to using polyphenols and polyamines
with the increase of planting age. The principal
component analyses showed that significant differences in PC1
were found among different aged kiwifruit orchard soils and
the differences in PC1 were mostly caused by carbohydrate,
amino acids and polymers. Nevertheless, wasteland soil and
kiwifruit orchard soils were separated in PC2