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杂交玉米种纯度的高低,直接影响着粮食的产量,同时也关系到种子部门的声誉,所以,应十分重视杂交玉米制种保纯收获,把好防杂保纯收获关。我们的具体做法可归纳为以下五点: 1.分期收获。先收母本种子,后收父本。一旦错行收获,也容易识别、纠正。 2.坚持收购果穗。收购果穗便于验质,有利于杜绝掺杂使假现象的发生。验果穗比验子粒要方便得多,且效果好。发现不合格的,可挑选合格后再收购。 3.统一脱粒时仍要坚持最后一次去杂。制种技术员在脱粒现场去杂,仍然不可忽视,因挑出一个杂穗就是去掉了二三百个杂粒。
The level of purity of hybrid corn directly affects the grain yield, but also relates to the reputation of the seed sector. Therefore, we should attach great importance to the pure harvest of hybrid corn seed production, and take good prevention of hybrid harvest. Our specific approach can be summarized as the following five points: 1. Staged harvest. First receive the mother’s seed, after receiving the father. Once the wrong harvest, but also easy to identify and correct. 2. Insist on the acquisition of ear. Buying fruit ear to facilitate quality inspection, is conducive to eliminating the occurrence of doping phenomenon. Test ear than the test grain to much more convenient and effective. Found unqualified, can be selected after the acquisition. Uniform threshing still have to adhere to the last time to miscellaneous. Seed production technicians at the threshing site to miscellaneous, still can not be ignored, because picking out a spike is to remove two or three hundred grains.