早熟高产杂交油菜绵油7号繁殖制种技术探讨

Mianyou 7,An Early-maturing and High-yield Hybrid Rape Variety,Its Seedsproducing Techniques

对绵油7号的繁殖制种进行了初步研究，总结了一套科学的繁殖制种规程和技术方法。制种的最佳行比为3：1，密度正2万株／hm2较为适宜，繁殖制种区的隔离条件和制种田可育株的及时去除是确保种子纯度的关键。

The optimum line ratio of maternal plants to paternal plants was 3: 1,and the most suitable density was 120,000 plants/hm2. Complete isolation of and removing undesirable fertile plant in good time from the propagating area were the key measures to guarantee purity of the seeds.