The main factors influencing development of agricultural economy in experimental area of soil and water conservation in Ansai county are population

soil and water conservation level

land area of agriculture

forertry

animal husbandry

and income from sideline occupations

etc. The total value of production each will increase steadily at the annual rate of 4.2% during 1986-2001

as GM (1

1) forecasted

and is directly related to population

income from sideline accupation forest land area

soil and water conservation level

and animal husbandry land area，but negatively related to agricultural land area

as the analysis of the relativity shows. To maximize the total value of production of agricultural economy or the total average value of production each in the experimental areas

the productive forces must be improved

condition of sideline occupation be developed greatly

forest land area must not be less than 3000 of whole arable land，the agricultural land area should be about 25% of whole arable land

so as to optimize the production structure of agriculture

forest

animal husbandry

sidqline etc