1. Continuous cropping cultivation: The roots of peach trees contain amygdalin, which produces hydrocyanic acid when it decays and decomposes, which is toxic to the roots of young trees. Therefore, it should be cultivated in continuous cropping land for 2-3 years or completely changed soil before cultivation.

2. Caused by root diseases of peach trees: At present, the main diseases affecting the growth of peach trees are rot and root rot. These two diseases mainly harm the growth of roots and branches of peach trees.

3. Waterlogging and freezing damage occur alternately: peach trees are drought-resistant and waterlogged-tolerant. In rainy years, if the orchard is poorly drained or has low-lying water, peach trees are easy to drown and die, and at the same time, if they encounter low temperature weather in winter, they are also easy to die.

4. Changes of soil environment: Peach trees are suitable for growing in soft sandy loam, and the suitable pH value is 4.9? 5.2. Peach trees have poor saline-alkali tolerance. When the salt content is above 0.28%, peach trees often cause plant death, and yellow leaf disease caused by iron deficiency often occurs in alkaline soil.