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玉米是山区的主要粮食作物,分布广,面积大,用种量大,特别是普及杂交种后,种子不仅用量大而且价格高,但由于亲繁制种受气侯因素的影响,产种量不稳定,很难计划生产。为了满足生产用种,做到灾年不缺种,丰年不“转商”,必须解决好大批量种子的安全隔年贮藏问题,才能实现储种备荒,调节种子丰歉,使种子生产供求平衡,减少“转商”的经济损失。同时,才可以酌情减少亲本自交系的繁殖世代和减少混杂的机会,以保持品种的优良种性。因此,在主产玉米的山区搞好种子的隔年安全越夏贮藏,在生产上有着十分重要的意义。
Corn is the main food crop in the mountainous area. It is widely distributed, large in area and large in area. With the popularization of hybrids, the seeds are not only used in a large amount but also costly. However, due to the influence of climatic factors on seed production, Stable and difficult to plan production. In order to meet the demand for production and to ensure that there is no shortage of species during the disaster year, Fengnian does not “transfer business” and must solve the problem of storing seeds in large quantities for safety in every other year so as to achieve stockpile for reserves, adjust seed apologies, balance supply and demand of seeds, Reduce “economic transfer” business losses. At the same time, it is possible to reduce, as appropriate, the generation of offspring of parental inbred lines and to reduce the opportunities for promiscuity, in order to maintain the goodness of breed. Therefore, it is of great significance in the production to ensure the safety of next year storage of seeds in the mountainous areas where maize is produced.