Planting & Soil第 46 / 100 题
The planting hole for a balled tree should generally be dug how wide relative to the root ball?
a.Two to three times the width of the root ball, no deeper than the ball
b.Exactly the same width and twice as deep
c.Half the width of the root ball
d.Ten times the width and very deep
解析
A hole two to three times as wide as the root ball loosens surrounding soil so new roots spread outward easily, while keeping depth equal to the ball prevents settling and deep planting. Digging deeper than the ball causes the tree to sink and the crown to sit too low. Wide and shallow is the standard rule.
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