果园小气候与苹果树腐烂病发生的关系苹果树腐烂病是毁灭性病害，已查明其病因主要与病原菌的侵染、树势强弱及冻害等因子有关。近年我们在生产中发现该病的发生与行间种植方式也有很大关系。遵化市靠山在镇王老庄村北有一面积近百亩的苹果园，１９７３年栽植，株行距为４... The relationship between orchard microclimate and apple tree rot disease Apple tree rot disease is a devastating disease, and its cause has been identified mainly as pathogen infection, tree vigor and frost damage and other factors. In recent years, we found in the production of the disease and the line between the planting methods also have a great relationship. Zunhua City in the town of Wang Laozhuang North has an area of ​​nearly acres of apple orchards, planted in 1973, spacing of 4 lines ...