造纸污泥有机无机复混肥在玉米上的施用效果研究

为了验证和明确造纸污泥农用的可能性，通过采用肥料生产的工业手段对其进行加工，将之生产为有机无机复混肥，并将其应用于玉米的生产中。结果表明，造纸污泥有机无机复混肥符合产品质量要求，施用后，玉米各生理性状、生育期和土壤理化性质等指标均有明显改善。通过对比常规施肥、无肥和造纸污泥有机无机复混肥的结果，得出如下结论：（1）造纸污泥经无害化处理后可作为生产有机无机复混肥的有机原料，且产品质量符合GB 18877-2002，可大面积推广；（2）在等养分前提下，施用造纸污泥有机无机复混肥在玉米促早熟方面优势大于常规施肥，此外，前者可有效促进玉米株高、穗粒数和百粒重增加，秃尖长度减少，且增产效果优于后者；（3）造纸污泥有机无机复混肥不仅具有改良土壤物理性状、蓄水保墒的特点，且可有效提高土壤有机质、碱解氮、有效磷、速效钾和全氮、全磷、全钾的含量。

The Effect of Organic-inorganic Compound Fertilizer Made of Paper Sludge on the Corn

In order to verify and define the agricultural possibility of the paper sludge, the sludge was processed by an industrial method of producing fertilizer. The results showed that, the organic-inorganic compound fertilizer could meet the quality requirements. After the fertilizer being applied to the corn, the parameters from physiological characteristics, growth period of the corn, and soil physical-chemical properties were all improved. By comparing the results from three treatments （conventional fertilizer, no fertilizer, organic and inorganic fertilizer）, the following conclusions were obtained： （1） after a safe dispose, the paper sludge could be treated as an organic raw material. The organic-inorganic fertilizer products were conformed to the national standard （GB 18877-2002）, which could be popularized a larger area. （2） In the premise of equal pure nutrients, the organic-inorganic fertilizer made of paper sludge applied in the corn was better than the treatment of conventional fertilizer in term of promoting the mature period earlier. In addition, the former could make the plant height taller, the grain number per ear more and the weight of 100-kernel heavier, the yield much more, but the barren tip length shorter than the latter. （3） The organic-inorganic fertilizer made of paper sludge could not only improve the physical properties of soil and the preservation of soil moisture, but also increase the contents of soil organic matter, total N, P, K and available N, P, K effectively.