导致玉米果穗异常空秆的原因１９９４年我省部分地区玉米不同程度的出现了空秆、棒小、果穗异常等现象，空秆率高达２０％～４０％，小棒率达１０％～１５％。此灾害对玉米产量影响很大，造成这种“哑巴灾”的原因在哪里？初步分析有以下原因所致。一、遗传因素据调查，１... Causes of abnormal ear stems of corn in 1994 in some parts of our province corn appeared varying degrees of empty stalks, small sticks, abnormal ear and other phenomena, the empty stalk rate as high as 20% to 40%, a small stick rate of 10% to 15% . This disaster has a great impact on corn production, resulting in this “dumb catastrophe” where? The initial analysis is due to the following reasons. First, the genetic factors According to the survey, 1 ...