精选种子就是通过机械选择,使农作物种子合乎规定的质量标准。从1979年到现在,我县已精选小麦种子370多万斤,精选“两杂”种子440余万斤。播种后苗全、苗壮、苗齐,还大大节约了用种量。播种精选的种子,加上综合栽培技术,1983年我县小麦产量超过了历史 The selection of seeds is through mechanical selection, so that crop seeds in accordance with the provisions of the quality standards. From 1979 to the present, my county has selected more than 370 kilograms of wheat seeds, selected “two hybrid” seeds more than 440 kilograms. Seedlings after sowing, Miao Zhuang, Miao Qi, but also greatly save the amount of use. Sowing the selected seeds, combined with comprehensive cultivation techniques, wheat output in our county in 1983 exceeded the history