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玉米是雌雄花序异位的异花授粉作物,花粉的数量很大,据报道,一株雄穗(天花)有2000—4000朵小花,能产生1500万—3000万粒花粉,群体中花丝花粉数量之比约在1:1000以上。故一株雄
Maize is a cross-pollination crop of male and female inflorescences, with large numbers of pollen. It has been reported that a tassel (smallpox) has 2000-4000 florets and produces 15-30 million pollens, The ratio is about 1: 1000 or more. So a male