This result indicates that the plant origin of Chinese propolis is poplar.
实验结果表明：中国蜂胶的主要植物源是杨树。
The experimental results showed that pinocembrin, chrysin and galangin were the main flavonoids in Chinese propolis.
实验结果表明：乔松素、白杨素和高良姜素是中国蜂胶的主要黄酮类化合物；
Here, the effects of poplar buds extracts, a main plant source for Chinese propolis, on disease control were investigated in vitro and in vivo.
中国蜂胶的胶原植物杨树芽提取物，对草莓果实病害的离体和活体控制效果进行了研究。
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