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利用垃圾堆肥作肥料,采用大田试验研究其对小麦生长和土壤的影响。结果表明,堆肥用量以150t/hm2效果最好,产量增幅达25%,施堆肥可提高土壤有机质和养分供应力,使土壤容重下降,偏碱性土壤pH向中性点靠拢。土壤重金属DTPA提取值,因施堆肥而递增的幅度大于重金属总量递增幅度并与作物吸收量有较好的相关性。
Using compost as fertilizer, field experiments were conducted to study the effects on wheat growth and soil. The results showed that composting at the rate of 150t / hm2 was the best and the yield increased by 25%. Composting could increase soil organic matter and nutrient supply, decrease the bulk density of soil and close to neutral point of alkaline soil. The DTPA value of heavy metals in soils increased more than that of heavy metals due to compost application and had a good correlation with crop uptake.