无产阶级文化大革命以来,我县人民发扬自力更生,艰苦创业的革命精神,在钱塘江海涂围垦造田20多万亩。头蓬垦区从1971年开始种油菜,1976年种植油菜6万多亩,平均亩产98.6斤,最高单产达到260斤。青大壮苗油菜秧苗素质的好坏,直接影响油菜的产量。据河庄 Since the Great Proletarian Cultural Revolution, the people of our county have carried forward the revolutionary spirit of self-reliance and arduous pioneering and have cultivated more than 200,000 mu of reclaimed land in the Qiantang River. The first reclamation area began to grow rapeseed in 1971. In 1976, more than 60,000 acres of rapeseed were planted with an average yield of 98.6 kg and the highest yield reached 260 kg. Green seedlings of young seedling seedlings quality is good, a direct impact on rapeseed production. According to river village