1 In the land reform, farmers buried boundary markers; 2. Farmers distribute food in agricultural cooperatives; Three people held up placard materials.

(1) Land Reform Law of the People's Republic of China; Feudal exploitation or feudal land

(2) agriculture; socialism

③ Incorrect. The people's commune system has greatly surpassed the actual level of productivity development in China; Violation of the socialist distribution principle of "distribution according to work"; It has dampened farmers' enthusiasm for production; It has greatly hindered the development of agricultural production.

(4) Farmers' income is low; It is difficult for farmers to seek medical treatment; Farmers are overburdened; The quality of life of farmers is not high.

⑤ Yuan Longping; Cultivating indica hybrid rice