玉米杂交制种一般亩产二、三百斤,生产上大量的供种任务主要靠扩大制种面积来完成。近两年来由于种子生产成本增加,质量下降,在一定程度上降低了杂交种的增产效益。因此保证质量,提高制种产量是玉米种子生产上急待解决的一个重要问题。一、控制杂交种子质量的环节玉米杂交种子的质量包括种子的遗传,纯度、发芽率、含水量、种子活力等因素,其质量控制环节贯串于亲本繁殖,杂交制种和加工经销等过程。 Maize hybrids generally yield two or three hundred catties, the production of a large number of tasks for the main expansion of seed production to complete. In the past two years due to increased cost of seed production, the quality of the decline, to some extent, reduce the hybrid yield increase. Therefore, to ensure the quality and improve the seed production is an urgent problem to be solved in the corn seed production. First, the control of hybrid seed quality aspects of the quality of hybrid corn seeds, including genetic, purity, germination rate, water content, seed vigor and other factors, the quality control links throughout the parental breeding, hybrid seed production and processing and distribution process.