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我省自1956年大面积推广胜利油菜等甘蓝型油菜良种后,大部分地区均表现抗病、高产,反映较好,面积不断扩大,尤其是文化大革命以来,我省山区、半山区也广为种植。但近十余年间,先后在奉化、淳安、东阳、武义、上虞、桐庐、衢县、兰溪、余杭、新昌、嵊县、安吉、仙居、丽水、遂昌、龙泉、云和、缙云、青田等19个县的山区、半山区发生过“花而不实”(即只开花而不结实)的现象。如奉化县早在1956年就有发生,1959年为害面积较大;1960年丽水县农场开始种甘蓝型油菜,连续五年发现其
Since 1956, the province has popularized large varieties of Brassica napus such as Brassica napus, most of which showed disease resistance, high yield, good response and continuous expansion. Since the Cultural Revolution in particular, the mountains and semi-mountain areas in our province are also widely Planting. However, over the past ten years, the company has successively established branches in Fenghua, Chun’an, Dongyang, Wuyi, Shangyu, Tonglu, Qu County, Lanxi, Yuhang, Xinchang, Shengxian, Anji, Xianju, Lishui, Suichang, Longquan, , Qingtian and other 19 counties in the mountains, Mid-levels have occurred “flowers and not real” (that is, only flowering and not strong) phenomenon. Such as Fenghua County as early as 1956, occurred in 1959, a larger area of damage; Lishui County farm in 1960 began to grow Brassica napus, found for five consecutive years