九台市兴隆镇大荒村七社农民李广玉承包2.4公顷土地,历年来都以种玉米为主,间种其它作物,经济效益不高,去了当年投入,只能维持7口之家的温饱生活。 1992年他学会了一整套的米薯间作栽培技术,当年以2:1形式种植米薯0.9公顷,实收玉米6450公斤,比清种玉米增产7.2%。马铃薯实收9150公斤,按每公斤0.56元出售,实收5124元,扣去种马铃薯的383元费用,纯收益4741元。 1993年又以3:1形式种了米 Li Guangyu, a farmer’s cooperative who lives in Dalang Village, Xinglong Town, Jiutai City, has 2.4 hectares of land under contract with other crops over the years. The economic benefits are not high. When the project was put into operation in that year, only seven people could live and work . In 1992, he learned a whole set of rice-potato intercropping techniques. In the same year, hectare was planted in a 2: 1 ratio of 0.9 hectares, with 6,450 hectares of corn harvested, an increase of 7.2% over that of pure-bred corn. Potato real income 9150 kilograms, 0.56 yuan per kilogram for sale, received 5124 yuan, deducted the cost of 383 yuan potato, the net income of 4741 yuan. In 1993, the rice was planted in 3: 1 form