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大面积杂交水稻生产田中经常混有它的母本不育系。据77—79年瑞安县典型田调查,不育系的混杂率,低的在3％,高的达10％以上,一般在5％左右。不育系是不能自交结实的,它的混杂比例越高,杂交稻的产量损失越多。据我所78年对比试验:汕优6号中无不育系混杂的,亩产1051斤;不育系混杂3.5％的,亩产1014斤,减产3.53％;不育系混杂5％的,亩产995斤,减产
Large-area hybrid rice production field often mixed with its maternal sterile line. According to 77-79 years of typical farmland investigation in Ryan, the miscibility rate of CMS was as low as 3% and as high as 10% or more, generally around 5%. CMS is not self-fertility, the higher the proportion of its hybrids, the more yield loss of hybrid rice. According to my 78 years of comparative tests: No Shanyou 6 mixed sterile lines, mu 1051 kg; sterile mixed 3.5%, 1014 kg per mu, cut 3.53%; sterile mixed 5%, mu Yield 995 pounds, cut