《Table 3 Effects of combined application of reduced fertilizer and biogas manure on chemical propert

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《Effects of Combined Application of Reduced Fertilizer and Biogas Manure on Summer Maize Growth and Acidic Soil Improvement》

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Different letters following data in the same column indicate a significant level at the 0.05 level.

Combined application of reduced fertilizer and biogas manure could change some chemical properties of summer maize soil（Table 3）.Compared with the CK，p H values of treatments BM and BM+CF60increased by 0.01 and 0.01 unit，respectively，without significant differences from the CK，but were significantly different from that of treatment BM+CF80，which was higher than the p H value of the CK by 0.12 unit.Various treatments had no significant differences in organic matter and available phosphorus content.Sole application of biogas manure and treatments of combined application of biogas manure and reduced fertilizer exhibited rapidly available potassium and alkali-hydrolyzale nitrogen contents higher and significantly different from the CK，while there were no significant differences between any two of treatments BM，BM+CF80and BM+CF60.