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缺苗,是造成玉米制种减产的重要原因之一。在玉米制种生产上,母本缺苗一般又不提倡补苗,因为补种或移栽的幼苗成熟后不易与父本花期相遇,即使赶上末花粉,也不如一播全苗的产量高。故掌握玉米制种一播全苗技术非常重要。1.选用优质亲本。尽量选用上年产的新种,因为新种发芽率高,发芽势强。播前用精选机选种,统一用种衣剂包衣,无条件精选和包衣的,用手工粒选,淘汰无生命力的种子,药剂拌种后播种。
Lack of seedlings, is one of the important reasons for the reduction of corn seed production. Seed production in maize, lack of seedlings generally do not advocate Buzhu Miao, because replanting or transplanting of seedlings and mature parental flow after the encounter is not easy, even if they catch up with the end of pollen, not as good as the whole plant yield high yield. Therefore, it is very important to master the seed production technology of corn seeds. 1. Selection of high quality parents. Try to use the new species produced on the annual output, because the new species of germination rate, strong germination. Prior to sowing with a selection of machines, uniform coating with seed coating, unconditional selection and coating, hand-granulation, out of non-viable seeds, seed dressing after the agent.