Compared with the policy of Derate and Subsidy, the agricultural investment for science and the agricultural investment for education influence more.

• 农业科研公共投资对农民人均现金收入之外的所有经济效果指标，包括农业产出、农民人均纯收入和农民种粮积极性都有着显著的正的影响，即农业科研投入越多农业产出和农民收入增加幅度越大；