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在制种过程中,要严格遵循良种繁育防杂保纯的各项技术、要求,同时还需掌握以下技术要点:1 保证亲本种子的纯度,这是保证制种质量的基础。2 适当调整父本、母本的种植密度,使母本花期早而集中,父本花期尽量延长。具体密度根据行距、亲本种植比例而定。一般父本、母本种植密度为1:2～1:3。3 在苗期、初花期完成除杂去劣工作,清除母本中的劣变株、异型株、其它油菜品种,尤其要清除干净母本中的可育株,保证杂交种子的纯度。4 适时割除父本,母本终花期及时将父本全部割除。免除收获母本
In the process of seed production, it is necessary to strictly follow the various techniques and requirements of seed multiplication and impurity protection, and at the same time, the following technical points need to be mastered: 1 The purity of the parental seed is guaranteed, which is the basis for ensuring seed quality. 2 Proper adjustment of the male and female planting density, so that the female parent early flowering, male parent flowers as long as possible. The specific density according to line spacing, the proportion of the parental planting may be. General male and female parent planting density of 1: 2 ~ 1: 3.3 at the seedling stage, early flowering to complete the work of removing impurities to eliminate maternal bad strains, shaped strains, other rape varieties, especially to clear Clean fertile plants in female parent to ensure the purity of hybrid seeds. 4 timely cut off the male parent, female parent final flowering in time to cut off all of the male parent. Exemption from parental harvest