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1987年河北省平泉县农业广播学校学员刘柏用地膜加小拱棚栽培甘蓝,头茬甘蓝连收两次,收后继续栽二茬甘蓝,一分地面积实产甘蓝1171.1公斤,合亩产值3433.40元。他的经验是:选用早熟品种“报春”,于2月28日在温室育苗。4月1日定植,株距46厘米,行距40
In 1987, Pingba County Agricultural Broadcasting School of Hebei Province, Liu Bai and Liu Sijia cultivation of cabbage with a small arch shed, the first crop of cabbage even twice, after harvest continue to planted two sprouts cabbage, a sub-area of real cabbage production of 1171.1 kilograms, output per mu 3433.40 yuan. His experience is: Selection of early varieties “Primula”, February 28 nursery in the greenhouse. April 1 colonization, plant spacing 46 cm, line spacing 40