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秦皇岛市蔬菜局特种蔬菜试验场1991年早春露地种植特种蔬菜3分地,总收入达6992.80元,去掉总投入1,300.00元(含用工、种子、农药化肥、有机肥、电等费用),纯收入5692.80元,折亩纯收入为18976.00元。如果露地生产普通菜按最高亩收入5000.00元计算,3分地则收入1500.00元。特种蔬菜生产效益是普通菜的3.8倍。具体茬口安排及栽培技术如下:
Qinhuangdao Vegetable Bureau special vegetables test site In early spring 1991, three special vegetables were planted on the open ground, with a total income of 6992.80 yuan, excluding the total investment of 1,300.00 yuan (including labor, seeds, pesticides and fertilizers, organic fertilizer, electricity and other expenses) and a net income of 5692.80 Yuan, fold acre net income of 18976.00 yuan. If the open production of ordinary vegetables according to the highest mu income 5000.00 yuan calculation, 3 points income 1500.00 yuan. Special vegetable production efficiency is 3.8 times the ordinary food. Specific crop arrangement and cultivation techniques are as follows: