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制种产量的高低不仅影响杂交种的推广速度,而且直接影响杂交种制种单位的经济效益。我场从89年成为管局玉米生产基地后,加强了玉米制种技术,并在第二队试制玉米东农248连续两年亩产超27公斤的产量,收到了好的经济效益。1 增加密度,扩大母本行比充分挖掘群体增产潜力1.1 增加密度充分挖掘群体增产潜力。群体是影响产量的最活跃的因素,提高玉米制种产量首先从增加群体为突破口,在1991～1992年两年中我场第二队制种面积在300亩(包括父
The level of seed production not only affects the promotion of hybrids, but also directly affects the economic benefits of hybrid seed production units. After the field became the corn production base of the CMC in 1989, we strengthened the technology of seed production of corn and achieved a good economic benefit when the trial production of the second team of corn, Dongnong 248, exceeded the output of 27 kg per mu for two consecutive years. 1 increase in density, expand the mother than fully tap the group to increase production potential 1.1 increase in density to fully tap the potential of group production. Groups are the most influential factors affecting the yield. Increasing the yield of maize seeds first increases the population as a breakthrough point. In the two years from 1991 to 1992, the production area of the second team in the field was 300 mu (including the father