硼是苹果必需微量元素之一,1992～1995年间,莱西地区盛果期红富士苹果园,缺硼现象严重,特殊园片造成减产50％,为此我们进行了调查研究,并采取了有效防治措施。 一、缺硼原因调查:1. 莱西地区多为沙姜黑土,自然含硼量多低于缺硼临界值0.5ppm。 2.沙姜黑土中钙含量高,而钙与硼有拮抗作用,易引起缺硼。 3.沙姜黑土速效钾含量较高,约150～180ppm,加 Boron is one of the essential trace elements of apple. From 1992 to 1995, there was a serious shortage of boron in Red Fuji apple orchard in Lacey area, resulting in a decrease of 50% in the production of special circular patches. Therefore, we conducted a survey and research and adopted an effective Prevention. First, the reasons for lack of boron survey: 1. Lacey mostly Shajiang black soil, natural boron content is much lower than the critical boron deficiency 0.5ppm. 2. Shajiang black soil in the high calcium content, calcium and boron antagonism, easily lead to boron deficiency. 3. Shajiang black soil available potassium content higher, about 150 ~ 180ppm, plus