Regulatory effects of row spacing on plant-soil feedbacks in an oat-forage pea intercropping system: a two-year, dual-location study.

BMC Plant Biol · 2025 · PMC12751768 · PMID 41291410

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highly significantno p-value reported

8 B), hay yield exhibited highly significant positive correlations with overyielding effect, net effect, complementary effect, and relative biological yield, as well as a significant positive correlation with electrical conductivity.

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a decreasing trendno p-value reported

Regarding soil organic matter content, the Hainan site displayed a decreasing trend with decreasing row spacing (Fig. 7 C), whereas at the Haixi site, only the 25 cm spacing treatment exhibited significantly higher values than the 20 cm and 15 cm spacings ( P < 0.05).

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