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近年来，广大菜农利用塑料大棚种植反季节蔬菜，成本高，经济效益低。我站探索出一套早莴笋、春玉米、秋白菜一年三熟种植模式，每公顷年获纯利９９５２８元，比传统种植模式增值５４５２５元，值得推广。早莴笋品种选用二白皮，全生育期１８０ｄ左右。９月初播种，苗床育苗，
In recent years, the majority of vegetable farmers use plastic shed cultivation of anti-season vegetables, high cost, low economic benefits. I am going to explore a set of early lettuce, spring corn, autumn cabbage three-year planting mode, each hectare net profit of 99528 yuan, 54525 yuan more than the traditional planting mode, worth promoting. Asparagus varieties used two white peel, the whole growth period of about 180d. Seeding early in September, seedbed nursery,