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小麦、甘薯、绿豆、菠菜三粮一菜四种四收,是在麦薯间作的基础上,进一步发展完善起来的一种高产高效益的种植形式。卢龙县大李佃子乡1990年共推广300亩,据新房子、郝佃子两村的14.43亩试验田的调查,平均亩产小麦200—300公斤、鲜薯1750—2100公斤、绿豆54—68公斤、菠菜750—1000公斤。按市场价小麦每公斤1元、甘薯每5公斤加工淀粉1公斤、每公斤淀粉2元、绿豆每公斤1.60元、菠菜每公斤0.20元计算,亩产值为1136.40—1448.80元。
Wheat, sweet potato, mung bean, spinach Sanlian dish four four harvest, is based on the intercropping of the potato, further development and perfection of a high yield and high benefit planting. In 1990, a total of 300 mu were popularized in Dalazi Township, Lulong County. According to a survey of 14.43 mu of experimental plots of the new house and Hao Dianzi, the average mu yield was 200-300 kilograms of wheat, 1750-2100 kilograms of fresh potatoes, 54-68 kilograms of mung beans, 750-1000 kg. According to the market price of wheat per kilogram of 1 yuan, sweet potato every 5 kilograms of starch processing 1 kilogram, 2 yuan per kilogram of starch, mung bean 1.60 yuan per kilogram, spinach 0.20 yuan per kilogram, mu output value of 1136.40-1448.80 yuan.