在农业学大寨群众运动蓬勃发展的大好形势下,我县积极开展大面积试种杂交水稻。1976年种杂交水稻8万多亩。其中有7万多亩分布在海拔290—1500米的不同高度上,形成了一个海拔高低相差1200米的栽培网。去年收割结果,杂交中稻普遍获得较大幅度增 Under the favorable situation of vigorous development of mass education in Dazhai Agriculture, our county actively carried out large-area trial cultivation of hybrid rice. 1976 kinds of hybrid rice more than 80,000 mu. Of which 70,000 mu are distributed at different altitudes of 290-1500 meters above sea level, forming a cultivation network with a difference of 1,200 meters above sea level. As a result of the harvest last year, hybrid mid-rice generally gained a relatively large increase