美国青提又名汤姆逊无核,是美国加州鲜食葡萄的王牌品种。经栽培观察我们认为是难得的大粒、无核葡萄品种。现将该品种的生物学特性及栽培要点介绍如下。 一、生物学特性 果穗圆锥形,穗大,平均穗重700g,最大1000g。果粒有令人喜爱的绿色,皮薄,味甜,肉质脆,汁多,平均粒重5.3g,经赤霉素处理可达8～10g。完全成熟时绿黄色,果粒长椭圆形,耐 United States Qingdi also known as Thomson seedless, California is the ace of fresh grape varieties. Observed by cultivation we think is a rare large grain, seedless grape varieties. Now the biological characteristics of the species and cultivation points are as follows. First, the biological characteristics Ear conical, spike, the average spike weight 700g, the largest 1000g. Fruit has a lovely green, thin, sweet, meat crisp, juicy, average grain weight 5.3g, gibberellin up to 8 ~ 10g. Greenish yellow when fully ripe, fruit long oval, resistant