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我区部份县种子公司,在认真总结以往杂交玉米种常规生产法(父母本按一定比例种植)、母本净作制种法(父母本分开净作人工取粉授)的基础上,1984年制种技术有了新的发展。现已初步试验成功:母本采用大小行种植,母本行间巧播父本,不再单设父本行(田、土)制种(简称后净作制种),使制种产量有了新的提高。据广安、武胜县种子公司采用上述方法制“中单二号”、“成单六号”的多点试验、示范(面积为43亩多)调查结果,此法比常规法结实率提高13.25—15.02％,单株产量提高17.3％,千粒重增加3.8％;平均亩产高213.7—215.8斤,增收42.43—57.55％。可见,该制种方法行之有效,是实行杂交玉米制种高产的新途径。
Some county seed companies in our district, on the basis of conscientiously summarizing the conventional production methods of hybrid corn (parents planted in a certain proportion) and the net seed production method Year seed technology has a new development. Now the preliminary test has been successful: the mother of the line size planting, clever play parenting between the parent line, no longer set up patrilineal line (field, soil) seed (hereinafter referred to as net seed production), seed production A new increase. According to Guang’an and Wusheng County seed companies, the above-mentioned method was used to conduct the multi-point experiment and demonstration (covering an area of more than 43 mu) of “Zhongdan No. 2” and “Chengdan No. 6”. The result was 13.25% -15.02%, the yield per plant increased by 17.3% and the 1000-grain weight increased by 3.8%. The average yield per mu was 213.7-215.8 kg, an increase of 42.43-57.55%. It can be seen that the effective method of seed production is a new way to implement the high yield of hybrid corn seed production.