加利福尼亚的油橄榄品种,其结实规律是大、小年相互交替。大年由于过多的开花、座果,损伤了枝条,因而导致果实小,成熟晚,质量差,价格低,并造成翌年减产。这是多年来一直在研究解决的问题。据试验,当果径在4毫米时,用150 ppm的NAA喷布叶面,当年可以有效地减少收获量,使单果增大,并保证来年的产量。但加利福尼亚的油橄榄栽培者不愿意使用NAA疏果,其原因很可能是由于树上 California olive varieties, the law of its strong, large, small annuals alternating with each other. New Year due to excessive flowering, fruit, damaged branches, resulting in small fruit, mature late, poor quality, low prices, and led to the next year cut. This is a problem that has been studied and solved for many years. According to the test, spraying foliar fertilizer with NAA of 150 ppm at a diameter of 4 mm can effectively reduce the amount of harvest, increase the fruit size and ensure the production in the coming year. However, California olive growers are reluctant to use NAA thinning, the reason is probably due to the tree