目前,杂种优势正被广泛地应用于农业生产实践中以提高农作物的产量。近年来,特别是文化大革命以来,我国大面积推广杂交玉米、杂交高粱而获得的显著增产的事实就是最好的例子。为了使更多的农作物,特别是雌雄同花的作物能利用杂种优势这一有效的增产措施,国内外正在多种作物上广泛而深入地开展选育遗传型的雄性不育系的工作,以解决大面积生产时人工去雄的困难,并已取得了可喜的进展。最近人们也开始注 At present, the heterosis is being widely used in agricultural production practices to increase the yield of crops. In recent years, especially since the Cultural Revolution, the fact that large-scale popularization of hybrid maize and hybrid sorghum in China has achieved remarkable yield increases is the best example. In order to enable more crops, especially monoecious crops, to utilize heterosis as an effective stimulation measure, the work of selecting and breeding genetic male sterile lines To solve the difficulty of artificial dehumanization in large-scale production, we have made gratifying progress. Recently people have begun to note