On August 30, Mr. Peng Qiugen, a farmer in Qilin village of Yangxunqiao town, was busying fertilizing on the roof of his house.

　　Peng Qiugen set his roof of 120 m2 as a “farmland” when he built the new house five years ago. He has tried to plant various crops including rice, watermelon and other vegetables, and amazingly successful.

　　Through the interview, our journalist knew that the well leak tightness of the roof has brought many advantages. Peng Qiugen said, he has only watered the rice seeded four times during the past two months. Roof planting also needs pesticide. However, compared with the land seeding, there are much fewer pests. Particularly, Peng Qiugen once planted watermelon, and finally he harvested almost over 400 kgs, with the utilization increasing over 30%.

　　Peng Qiugen spent RMB 360,000 yuan into building the four-storey house at that time, among which 50,000 yuan has been used in transforming the roof.

　　But he never regretted his decision. Roof farming has been proved to be a good idea and available for