The research provides estimates of grain harvest per capita and surplus labor size in rural Wuxi based on detailed analysis of the rich data provided by the Japanese South Manchuria Railway survey and the two .

Based on GIS techniques and spatial autocorrelation analysis, the regional pattern changes of per capita grain possession and the matching patterns of grain production and economic development on county scale in Jiangsu province were considered.

Change of per capita grain and per capita cultivated land in Shaanxi province;

Based on the sense analyzing the situation of grain supply and the trends of cultivated land resources, they are indicated that the increase of per capita grain has slowing-down and the decrease of per capita cultivated land has been speeding within last decade years in Shaanxi Province.

The poverty status of Henan farmers in the Qing Dynasty is short of quantificational analysis longly,but without any other income source,the net cereals harvest is an index which can reflect this status and can be quantified.