lack of proportion
3.The results showed that the N and P_2O_5 inputs in agro-ecosystem were surplus of 148.9 kg/hm~2 and 93.8 kg/hm~2 respectively. The lack amount of K was 73.1 kg/hm~2. The proportion of organic manure in total fertilizer application was small. The nutrients in paddy field were more unbalanced than that in upland field.

