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1981年以前,我县油菜单产徘徊在150斤左右,近几年,通过改换良种和推广先进栽培技术,单产超过300斤,单产、总产都较1981年以前翻了一番。根据几年的
Before 1981, the yield of oil rapeseed in our county hovered around 150 kilos. In recent years, the output of more than 300 jin per mu has been increased by changing varieties and popularizing advanced cultivation techniques. The yield per plant has doubled from that before 1981. According to several years