Effects of Biochar Combined with Nitrogen Fertilizer Reduction on Rapeseed Yield and Soil Aggregate Stability in Upland of Purple Soils.

Effect of Biochar and Nitrogen Fertilizer on Soil Stability Index Except for PAD 0.25 , for each nitrogen fertilizer treatment, the effects of biochar on other soil stability index (DR 0.25 , WR 0.25 , D-MWD, D-GMD, W-MWD and W-GMD) reached a highly significant level ( p < 0.01; Table 1 ).

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Total organic carbon (TOC) in R 0.25 of soil mechanical-stable aggregates was basically all increased after biochar application, especially in 0.25–1 mm and 1–2 mm aggregates, and had an increasing trend with biochar increase.

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