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随着我国农业的飞速发展、玉米单产的不断提高,近年来,我国杂交玉米种植面积不断上升,玉米杂交种的需求量也随之增加、制种面积不断扩大。我国玉米制种面积不断扩大的同时,因自然灾害、环境条件及技术等造成的种子质量不合格、减产减收甚至绝收现象时有发生,给制种单位和制种农户带来严重经济损失,大量的劣质种子也给农业生产带来严重后果。针对这一问题,提出了有效的杂交玉米制种的技术措施。
With the rapid development of agriculture in our country, the yield per hectare of maize has been continuously increasing. In recent years, the acreage of hybrid maize in China has been on the rise. The demand of maize hybrids has also increased, and the area of seed production has been continuously expanded. At the same time that the area for seed production of maize in our country is continuously expanding, the quality of seeds caused by natural disasters, environmental conditions and technologies, etc. have been substandard, and the phenomenon of reduction in production, reduction in income or even occurrence of excessive harvest occurs from time to time, causing serious economic losses to the seed production units and seed- Large numbers of poor seeds also have serious consequences for agricultural production. In response to this problem, put forward an effective hybrid seed production of technical measures.