Response of soil CO2 emission and summer maize yield to plant density and straw mulching in the North China Plain.

ScientificWorldJournal · 2014 · PMC4134813 · PMID 25147835

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an increasing trendno p-value reported

Overall, the soil microbial biomass showed an increasing trend from filling to maturity stages, while the soil microbial activity showed the opposite trend. 3.4.

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