Answer: The management of soil in mature walnut gardens mainly consists of ploughing and ripening and soil and water conservation. Plowing can ripen the soil, improve the structure of the soil, increase the ability of the soil to retain water and fertility, and reduce the occurrence of pests and diseases. Methods for plowing the soil include deep plowing and shallow plowing. Deep plowing is suitable for flatland walnut or large-scale walnut terraces. It is generally performed before and after fruit harvesting combined with autumn fertilizing. In areas where the soil conditions are better or where deep plowing is difficult, shallow turning can be used. It can be carried out once or twice a year in spring and autumn every year, with a depth of 20-30 cm. Because there is a certain slope on the ground and the soil erosion is serious, the mountain and walnut gardens must take measures such as cultivating terraces and digging fish scale pits. Specific management measures in different places can be carried out according to local conditions.
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