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一、雄花粉的采集优质的雄花粉颗粒饱满、色黄而透绿,手一捻呈糨糊状。一般来讲,当雄树花序由青转为淡黄时采集花粉,可将花粉抖落在白纸上收集备用。二、雌花成熟的识别银杏的开花顺序是由下到上,主枝先开花,然后下枝条开花。在下枝条1/3的花柱头上有水珠时,全树花基成熟,此时进行人工授粉最佳。掌握人工授粉的最佳时机,还可以参考以下几个特征:1.银杏树叶片有
First, the collection of male pollen High-quality male pollen grains full, yellow and green through, a hand twist a paste mushy. In general, when the male tree inflorescences from yellow to yellow collection of pollen, the pollen can shake off the white paper collection reserve. Second, the female flowers mature identification Ginkgo flowering from the bottom up, the main branch first flowering, and then the next flowering branches. In the next branch 1/3 of the head of the column with water droplets, the whole tree flower base mature, artificial pollination at this time the best. Grasp artificial pollination the best time, you can also refer to the following features: 1 ginkgo leaves have