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苹果缩果病是凉山地区苹果发生的主要病害之一,它对发展苹果生产,提高幼树早结果、早丰产,提高产量和品质,保证内外贸的需要,增加集体、社员收入都将受到一定的影响。发生苹果缩果病的原因是土壤缺硼。凉山地处高寒山区,多数果园均为荒山斜坡地改造成的梯地。土壤贫瘠严重缺乏有机质,有的土壤含有机质不高,更缺乏微量元素。1975年我们通过昭觉、越西、布拖的几个果园调查发现苹果缩果病在凉山地区比较普遍,发病率最低的是2.08％,最高达66.6％
Apple fruit shrinkage is one of the main diseases in the apple-growing area of Liangshan. It will have a certain effect on the development of apple production, early result of saplings, early yield, higher yield and quality, ensuring the needs of domestic and foreign trade and increasing the income of collectives and members Impact. The cause of apple shrinkage is the lack of boron in the soil. Liangshan is located in the alpine mountains, most of the orchards are slopes of the barren mountains transformed into the ladder. Arid soil lack of organic matter serious, and some soil contains organic matter is not high, the more the lack of trace elements. In 1975, we found that apple shrinkage diseases were more common in Liangshan area through the investigation of several orchards in Zhaojue, Yuexi and Budu. The lowest incidence was 2.08% and the highest was 66.6%