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首页> 外文期刊>Journal of Agricultural Chemistry and Environment >Effect of a Newly Developed Pelleted Papermill Biosolids on Crop and Soil
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Effect of a Newly Developed Pelleted Papermill Biosolids on Crop and Soil

机译：新开发的造粒生物糖对作物土壤的影响

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The US is one of the leading global producers of paper industry with approximately 24 percent of the share of world paper supply. Despite diversity of the feedstock and production methods, C rich papermill biosolids (PB) is a major byproduct of paper production process. Landfilling is the predominant method of PB management. Increasing landfill cost and its potential environmental consequences have incentivized research and development efforts to find beneficial uses for PB. This sensible option reduces the overall paper production costs and increases environmental sustainability. Pelletization of PB increases its marketability by reducing transportation costs. This greenhouse study was conducted to gain a better understanding of the properties and effects of a recently developed pelletized papermill biosolids (PPB) on bell pepper (Capsicum annuum L.) and soil. Urea and PPB were each applied at four total N rates equivalent to 45, 90, 135, and 180 kg N ha~(﹣1) and an additional control treatments of 0 N was included. The total C and N concentration in this PPB were 379 and 14 g·kg~(﹣1) respectively and its C:N ratio was 27.2. Nitrogen treatment significantly (P ≤ 0.0839) influenced pepper height, dry biomass, N concentration, and N uptake. Plant height ranged from 31.2 to 44.4 cm; 135 kg·ha~(﹣1) urea-N and PPB-N produced the tallest and shortest plants respectively. Dry biomass of the pepper that did not receive any N, those treated with urea-N or PPB-N were 5.3, 5.7 - 7.5, and 5.9 - 6.5 g·plant~(﹣1) respectively. Nitrogen concentration in control treatment (0 N) was 36.4 g·kg~(﹣1) and that of pepper treated with any N ranged from 32.0 - 40.7 g·kg~(﹣1). There was an inverse numerical, albeit not always statistically significant, relationship between PPB rate and plant N concentration. Generally, pepper treated with urea removed significantly more N from soil than control or PPB treated pepper. Nitrogen uptake by plants that did not receive any N and those amended with urea or PPB were 194, 229 - 270, and 155 - 164 mg·plant~(﹣1) respectively. Pepper N uptake and concentration data indicate that higher rates of PPB resulted in immobilization of native soil and PPB-N due to its wide C:N ratio (27.2). Nitrogen treatment significantly influenced soil pH, SOM, total C and N (P > 0.1). Soil organic matter and total C in post-harvest soil samples were 17.4 - 19.4 and 21.9 - 35.0 g·kg~(﹣1) respectively. The observed increase in soil total C and SOM highlights the potential beneficial use of PPB as a means to improve soil health and sequester C in soil. Narrowing the C:N ratio of PPB, by coapplication or incorporation of the mineral N into the pellets will make it an attractive organic N fertilizer.
机译：美国是全球领先的造纸业生产商之一，大约24％的世界纸张供应。尽管原料和生产方法的多样性，C含量丰富的造纸生物糖（PB）是纸生产过程的主要副产品。填埋是PB管理的主要方法。提高填埋成本及其潜在的环境后果具有激励的研究和开发努力，为PB找到有益用途。这种明智的选择降低了整体纸张生产成本并提高了环境可持续性。 PB的造粒通过降低运输成本来提高其可销售性。进行了这种温室研究，以便更好地了解最近开发的造粒Biosolids（PPB）在甜椒（辣椒子Nanum L.）和土壤上的性质和效果。尿素和PPB各自在等于45,90,135和180kg N HA〜（-1）的四个总N个速率下施用，并且包括0 n的另外的对照处理。该PPB中的总C和N浓度分别为379和14g·kg〜（-1），其C：n比为27.2。氮治疗显着（p≤0.0839）影响辣椒高度，干生物量，N浓度和N吸收。植物高度从31.2到44.4厘米; 135千克·HA〜（-1）尿素-N和PPB-N分别产生最高和最短的植物。没有接受任何N的胡椒的干生物质，尿素-N或PPB-N处理的那些分别为5.3,5.7-7.5和5.9-6.5g·植物〜（-1）。对照处理中的氮浓度（0N）为36.4g·kg〜（-1），并且用任何n处理的辣椒的范围为32.0-40.7g·kg〜（-1）。有一个数字，尽管在PPB率和植物N浓度之间并不总是统计学意义。通常，用尿素治疗的胡椒从土壤中取出明显多于对照或PPB处理的胡椒。未接受任何N的植物和用尿素或PPB修正的植物的氮气吸收分别为194,229-270和155-164mg·植物〜（-1）。辣椒N吸收和浓度数据表明，由于其宽的C：n比（27.2），PPB的较高速率导致天然土壤和PPB-N固定。氮治疗显着影响土壤pH，SOM，总C和N（P> 0.1）。土壤有机物和收获后土壤样品中的C总量分别为17.4-19.4和21.9-9-9-9-9-9-9-9-9克〜（-1）。观察到的土壤总C和SOM的增加突出了PPB的潜在有益使用，作为改善土壤中土壤健康和螯合C的手段。通过凝固或将矿物质掺入颗粒中的C：N比PPB的比例缩小为颗粒将使其成为一种有吸引力的有机N肥料。

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