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苹果缺铁黄叶病 ,在北方苹果产区普遍发生 ,为了能从根本上进行防治 ,定植时不仅要选择品种 ,而且还要选择砧木 ,即选择不容易发生黄化的砧木 ;土壤选择疏松的沙壤土 ,并通过增施有机肥 ,深翻改土 ,提高肥力 ,避免在地下水位高、盐碱地和碱性强的地块栽植。此外 ,辅之以适当的
Apple yellow iron deficiency disease occurs in the northern apple producing areas, in order to fundamentally prevent and control, when planting not only to choose varieties, but also to choose rootstock, that is, choose not prone to yellowing rootstocks; loose soil selection Sandy loam, and by increasing the application of organic fertilizer, deep soil improvement, increase fertility, to avoid high groundwater table, saline and alkaline plots planted. In addition, supplemented by appropriate