To all agricultural employees: refers to the regional rural practitioners and rural settlements area ratio, the index can reflect the intensive use of rural residential land situation in labor input, are positive indicators.

Per capita agricultural practitioners: refers to regional rural practitioners with agricultural settlements, the ratio of the area under the indicators can reflect rural land for settlement, intensive use of labor inputs is classified as a target.

Even agriculture jobholders: Is refers to the region village jobholders and the agriculture occupies ratio of the area, this target may reflect the countryside residential area uses the intensive use labor force investment situation, belongs to the direct indicator.

Agriculture in China: refers to region in China rural to rural area ratio, the index reflect the rural residential land intensive use of labour input, belonging to the index.

The people engaged in agriculture of ground: Refer to the rural employees in the area and occupy some area proportions agriculturally, this index can reflect the area of residential area utilizes workforces to invest the situation intensively in the countryside, it is a straight index.