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玉米亲本种子的纯度,关系到杂交种子的杂交优势,杂交种子的质量好坏,直接影响到大田粮食的产量,因此,亲本种子防杂保纯是搞好种子工作的首要任务。十几年来为提高亲本种子的纯度,我们采取了以下几项措施。一、认真做好亲本繁殖田用种的选留亲本繁殖田所用的种子,比杂交制种田所用的种子纯度要求更高。为确保亲本繁殖田用种的纯度,我们采取了三种选留方法。一是从科研或兄弟单位引进纯度好的亲本原种,作为亲本繁殖田的用种。这种方法见效快,纯度
The purity of the maize parental seed is related to the hybridization advantage of the hybridized seed and the quality of the hybridized seed has a direct impact on the yield of grain in the field. Therefore, it is the primary task to improve the quality of the seed work. More than a decade to improve the purity of the parent seeds, we have taken the following measures. First, conscientiously do a good job of the parent breeding field Seed selection of the seed used in the breeding field of the seed, hybrid seed farming used in the seed purity requirements higher. To ensure the purity of the species used in the parent breeding field, we have adopted three selection methods. First, from the scientific research or fraternal units to introduce good purity of the parental species, as the parent breeding fields with species. This method is effective, purity