农业是我国的基础产业，粮食生产更是重中之重。随着我国人口的不断增加，耕地面积的逐年减少，粮食问题显得尤为突出。依靠科技，大力培养优良品种，是当前增加产量和改进粮食品质最直接最有效的途径。培养优良品种的方法中，利用高新技术育种是近年来农业科技攻关的热点... Agriculture is a basic industry in our country and food production is even more important. With the continuous increase of our population and the decrease of cultivated area year by year, the issue of food is particularly prominent. Rely on science and technology and vigorously cultivate fine varieties are the most direct and effective ways to increase output and improve grain quality at present. Among the methods of cultivating fine breeds, the utilization of high-tech breeding is a hot topic in agricultural science and technology in recent years.