银杏人工授粉主要有挂花枝法,喷雾法,增接雄株法,喷粉法,其中以喷雾法效果最好。 1、采集花穗。雄花一般比雌花早开放2—3天。要选择气候条件相宜,花期基本同步的雄树作为花粉来源。采集花穗在4月上旬或中旬,派专人对雄株不断观察,待花穗由青变黄时及时采下。花穗采下后松散地装入透气的口袋中,以防发热霉烂。 2、制取花粉。花穗采回后将其放在温度25℃以 Ginkgo artificial pollination are the main method of hanging branches, spray method, add the male plant law, dusting method, of which the best spray method. 1, collecting spikes. Male flowers generally open 2-3 days earlier than female flowers. To choose suitable climatic conditions, flowering basically synchronized male tree as a pollen source. Collection of spikes in early April or mid-April, to send someone to observe the male plant until the spikes from green to yellow timely mining. Spikes collected loose loose into the breathable pocket, to prevent fever and mildew. 2, Preparation of pollen. Spikes collected after the temperature at 25 ℃