After drought stress, root distribution in P 1 and P 2 treatment were lower than that in CK but still followed a decreasing trend, with roots being more evenly dispersed.
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Effects of Water-Nitrogen Coupling on Root Distribution and Yield of Summer Maize at Different Growth Stages.
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Furthermore, spatial projection of the root system in Figure 5 showed that under different moisture treatments, the projected area showed a trend of vertical extension, and decreased significantly with the increase in soil depth.
identified a highly significant correlation between root traits in deeper soil layers and crop water consumption [ 12 ].