Based on the consecutive located fertilization of 7 years on chestnut-cinnamon soil in Zhuanyaogou vvatershed Northwestern Shanxi

the effects of increasing soil fertility and crop yieldwere studied.The results showed that the increasing yield range became higher after fertilizingthe soil consecutively

and the soil adversity resistance was improved.The effects of increasingsoil fertility and crop yield by using mixttire of organic and inorganic fertilizer;were much moresignifacant than using the organic only-or-only inorganic fertilizer

and the former’s increasingyield range on average was 1.5 times as great as the control;The application of manure mixedwith nitrogen was the best for increasing crop yield.The application of high level manure withnitrogen fertilizer had the best effect of increasing soil fertility

which was 2 times great as thecontrol.