Keywords: 
• hilly ground /
• commercial tree species /
• growth /
• yield /
• fruit quality /
• soil coniditions /

Abstract: Growth and fruiting of more than 20 varieties belonging to 8 types of commercial trees cultivated under normal conditions in the hilly regions of middle part of Zhejiang Province and changes of soil chemical characteristics have been discussed .The practice shows that such evergreen species as Citrus reticulata cv .Ponkan , C .changshan-huyou , Chinese strawberry and C .unshiu are most suitable for this region with such soil ;such pomeloes as Yongjia fragrant pomelo and gaoxie pomelo and such navel oranges as C .sinensis cv .Skaggs Bonanza and Newhall Navel Orange can be planted because of their good performance in growth and fruiting ;chestnut among deciduous species is most suitable , too ;Tianmu sweet plum can also be planted so long as pollinating varieties are properly mixed;capable of fruiting , ginkgo grows well and dogwood grows vigorously late in growth ;sweet varieties among persimmons have a heavy flower drop and fruit drop , which results in a low yield while puckery varieties fruit very well ;Pujiang peachshaped plum and Fujian nai plum only flower with no fruits or fruits heavily damaged by insects ;and jujube is not suitable for planting on account of poor growth and fruits of poor quality .Plowed and occupied by trees , soil has changed in chemical characteristics under the influence of commercial species of trees planted and the application of fertilizers to the soil , favorable to growth and fruiting of the trees .All this can be seen from the reduction of soil acidity and increase in both soil fertility and land production potential .With a good ecological and economic effect , C .changshan-huyou , C .unshiu , Chines strawberry , etc .can tolerate poor soil , showing a high suitability and a high and stable yield .