Balance and adjustment of soil organic matter and nutrients under intensive wheat rice double cropping were studied in Lixiahe region of Jiangsu Province.The results showed that the amount of returned organic material in high yielding fields is 14.22%～18.69% higher than that in normal yielding fields.N and P surpluses and K deficits in the soils under high yielding were 380.0～432.0 kg/hm 2,19.15～32.78 kg/hm 2 and 99.1～174.0 kg/hm 2,respectively,N and P surplus being higher than and K deficit being abou...