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在香蕉园,比较推荐施肥、添加木本泥炭对土壤养分状况的影响。结果表明,添加木本泥炭有效增加了0~90cm土层无机氮存储量,降低土壤氮素损失,提高香蕉可利用氮素量,其中推荐施肥+1份泥炭处理各土层NO3--N含量最高,推荐施肥+2份泥炭处理15~60cm土层NH4+-N含量显著提高。添加木本泥炭对土壤有效磷含量的作用不明显,但能有效提高耕层土壤速效钾含量,且以每667m2施250kg效果较优。添加木本泥炭显著提高了耕层土壤交换性钙含量和0~15cm交换性镁含量;对土壤pH值改良效果有限,pH值变化幅度<0.5。
In banana garden, more recommended fertilization, adding woody peat to soil nutrient status. The results showed that adding woody peat effectively increased the storage of inorganic nitrogen in 0 ~ 90cm soil layers, decreased the soil nitrogen loss and increased the available nitrogen content of banana, of which 1 was recommended for peat treatment. The highest, recommended fertilization +2 peat treatment NH4 + -N content of 15 ~ 60cm soil layer increased significantly. The effect of adding woody peat on soil available P was not obvious, but it could effectively increase the content of available K in topsoil, and it was better to apply 250kg per 667m2. The addition of woody peat significantly increased the exchangeable calcium content and the exchangeable magnesium content of 0-15cm in the topsoil, but limited the improvement of the pH value in the soil, and the variation range of pH value was less than 0.5.