提高玉米制种田间纯度的措施

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1.亲本统繁:亲本统繁是保证自交系种子质量,提高杂交种田间纯度的基础。一要坚持省提、地繁、县制的良繁体系。省种子公司做好亲本自交系的套袋提纯和原种生产工作,为地区亲本统繁提供优质原种种子;地区种子公司根据亲本种子需用 1. Parents Tongfan: Parents Tongfan is to ensure the quality of seeds inbred lines, improve the purity of hybrids based on the field. First, we must uphold the province to mention, to the traditional system of good and complicated system. Provincial seed companies do a good job of bagging purification and seed production of their own inbred lines and provide high-quality seeds of seeds for local parents. The seed companies in the region need to use seedlings according to their needs
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