品质最好的葡萄品种,如果它是雌能花类型,在很大程度上就丧失了自己的商业栽培价值。具有雌能花的品种,其产量每年依赖于葡萄开花期的气候条件而显著变动。在天气条件不良的年份,从两性花的授粉品种传粉就困难,结果使葡萄穗疏松,品质低,产量大大降 The best quality grape varieties, if it is a female genus, largely lose its commercial value. Varieties that have the ability to flower can vary significantly in their annual output depending on climatic conditions at the flowering stage of the grape. In poor weather, pollination from pollination of both sexes is difficult, resulting in loose grapes, low quality, and much lower yields