夏播向日葵在我县发展很快,977年已发展到95,000多亩,虽然遇到长达60多天的严重秋旱,平均每亩只产50斤,但仍涌现出一批亩产过00斤的公社、200斤的生产队和300斤以上的高产地块。董家沟公社城南大人春播油菜230亩,平均每产221斤,下茬复种油用向日葵150亩,平均亩产153斤,两茬亩产油料374斤。但我县推广夏播向日葵的年限较短,有许 Summer sowing sunflowers in my county developed rapidly in 977 has grown to more than 95,000 acres, despite the severe autumn drought up to 60 days, the average yield of only 50 pounds per mu, but still emerge a group of mu Kg commune, 200 kg of production team and more than 300 pounds of high yield plots. Commune south of Dongjiagou commune Spring 230-acre young adults, with an average of 221 pounds per crop, the next crop of oil with sunflower 150 acres, an average of 153 kg per mu, two stubble oil production 374 kg per mu. But my county to promote the summer broadcast sunflower shorter life expectancy