辽葵杂1号向日葵在省内各地制种,产量很低(30～50斤),给推广和生产应用带来了困难。我所在1981年对如何提高该组合制种产量进行了调查和试验,取得一定效果。提高制种产量除选地倒茬、实行三年以上轮作以外,还要从如下几个方面加强技术管理。,1.保证隔离区 Liao Kui miscellaneous sunflower No. 1 throughout the province seed production, low yield (30 to 50 pounds), to promote the production and application of difficulties. In 1981, I conducted some investigations and experiments on how to increase the output of this combination seed production and achieved some results. In addition to increasing the seed production, the crop rotation should be carried out for more than three years, and technical management should be further strengthened in the following aspects. 1, to ensure isolation zone