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针对皖南酸性红黄壤“酸、瘠”特点 ,采用田间试验方法研究了白云石对皖南酸性红黄壤的改良效应。研究结果表明 :酸性红黄壤上施用白云石粉可改善土壤酸度状况 ,提高作物产量。小麦、红豆的增产效应与不同白云石施用量存在明显差异 ,施用110 0～ 2 5 0 0kg/hm2 白云石粉时 ,小麦、红豆生长发育状况较优 ,产量较高 ,经济效益最佳
According to the characteristics of acid and infertility in acidic red and yellow soil in southern Anhui Province, the effect of dolomite on the acidic reddish brown soil in southern Anhui was studied by field test. The results showed that the application of dolomite on acidic red and yellow soils could improve soil acidity and increase crop yield. Wheat and red bean have obvious difference in yield and dolomite application rate. When dolomite powder of 110 0 ~ 25 000 kg / hm2 is applied, the growth and development of wheat and red bean are better, the yield is higher and the economic benefit is the best