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玉米种子质量管理应该贯穿于种子生产的每一个环节,如果某一个环节出现问题都会影响种子质量,甚至是制种报废。《中华人民共和国农作物种子质量标准》(GB4404.1-1996)规定,玉米单交种种子质量指标有四项:纯度、净度、发芽率、含水量;两个级别:一级种子纯度、净度不低于98%,发芽率不低于85%,含水量不高于13%;二级种子纯度不低于96%,其他三项同一级种子标准。长城以北和高寒地区水分允许高于13%,但不能高于16%。上述四项指标中有一项达不到指标即为不合格种子。在玉米种子生产过程中,围绕种子质量的四项指标,抓好每个关键技术环节。
Corn seed quality management should be run through every aspect of seed production. If any problem occurs, the quality of the seed will be affected, and even seed production will be scrapped. “People’s Republic of China Crop Seeds Quality Standards” (GB4404.1-1996) provides that there are four indicators of seed quality of corn hybrids: purity, clarity, germination rate, water content; two levels: the purity of a seed, the net Degree of not less than 98%, germination rate of not less than 85%, water content of not more than 13%; secondary seed purity of not less than 96%, the other three with the same seed standard. The water north of the Great Wall and the alpine region allows for more than 13% moisture but not more than 16% moisture. One of the above four indicators fails to meet the target is unqualified. In the corn seed production process, focus on the four indicators of seed quality, do a good job in each key technical aspects.