The entire membrane covering the double ridge surface collection rain trench planting technology is suitable in the grain,the oil crops.

One year after surgery,6 cases conjunctival flap covers were opened and corneal epithelium returned to normal,in which 4 cases had corneal leucoma and the other 2 cases had corneal macula.

Study on corn no-till planting mode of double ridge mulching "one film used for two years" on dryland;

The film-covering cultivation of rice through growing season is a new technology developed recently which could increase the rice yield in the rice field of cold water in high moutain areas.