采取措施保证全苗,是夺取夏玉米制种高产的基础。为此,要做好以下几项工作: 1.精选种子收获的玉米自交系都要经过精选机精选。播种前,根据肉眼判断,用手工将父、母本进行粒选,剔除明显无生命力的种子(包括坏种、废种、无胚种、破碎粒等),切实保证亲本种子质量。手工粒选种子,虽然比较费事,但每个制种户一般制种面积不超过5亩,用种量不多于10公斤,粒选的工作量也不算太大,完全适用,行之有效。 2.种子处理 (1)晒种。在播种前,将玉米自交系摊于场上晾晒2～3天,能促进种子的后熟作用,增强吸水能力,从而达到提高发芽率和出苗率的目的。 Take measures to ensure the whole seedlings, is to seize the basis of high yield of summer maize seed. To do this, we must do the following: 1. Select the seed harvest of corn inbred lines have to go through the selection of machines selected. Before sowing, according to the naked eye judgment, the parents and the female parent are hand-selected for grain selection, and the obviously inanimate seeds (including bad breeds, waste seeds, germ-free seeds, broken grains and the like) are removed to effectively ensure the quality of the parent seeds. Manual seed selection of seeds, though more troublesome, but the general seed production system for each seed production area of ​​not more than 5 acres, with the amount of not more than 10 kg, grain selection workload is not too large, fully applicable and effective . 2 seed treatment (1) bask in. Prior to sowing, the corn inbred lines stand on the field for 2 to 3 days, can promote seed ripening effect, enhance water absorption capacity, so as to achieve the purpose of improving germination rate and emergence rate.