Plant nutrition on fly-ash
Plant nutrition on fly-ash
复制标题
粉煤灰上的植物营养
作者：
W. Rees;G. Sidrak
术语“飞灰”用于描述粉煤燃烧后产生的工业废料。现代发电站产生大量的这种废料，并且令人满意地处理它可能是一个问题。在某些情况下，它以低矮的废石堆的形式堆积在低洼的草地上，或用作山谷和沙坑的填料。倾倒作业完成后，预计将尝试用某种形式的植物覆盖物覆盖灰的表面。Res es和Sk el din g 12在沃里克郡Hams Hall电站的弃土堆顶部进行的现场试验表明，如果灰的表面首先覆盖一层污水污泥或污泥/土壤混合物，则可以建立草层。虽然火山灰存款有大约40英尺高，但没有干旱问题。然而，可能出现的问题涉及灰颗粒对植物根部的影响。如果在这些地区采用轮作耕作的做法，当土壤和火山灰混合时，可能会发生这种情况。在这方面，植物/灰营养相互关系的知识将显得很重要。在没有土壤或淤泥覆盖物，而直接在火山灰中播种是唯一合适的替代办法的情况下，这种信息也很有价值。新沉积的火腿厅灰的自然植物定植显着不同的早期演替阶段的特点黑乡废物地区（Reesla）。发电站的火山灰覆盖着
The term "Fly-ash" is used to describe an industrial waste material which is produced after the combustion of pulverized coal. Modern power stations produce large quantities of this waste material and the satisfactory disposal of it may present a problem. In some cases it is deposited on lo~v-lying meadows in the form of a low spoil heap or used as a filler for valleys and sand pits. When tipping operations are completed it is anticipated that at tempts will be made to cover the surface of the ash with some form of plant cover. The field experiments of R e e s and S k e l d i n g 12 on the summit of a spoil heap at Hams Hall power station, Warwickshire, indicated that a grass ley could be established if the surface of the ash was first covered with a layer of sewage sludge or sludge/soil mixtures. There were no drought problems although the ash deposit was about forty feet in height. A problem which may arise however concerns the effect of the ash particles on plants roots. This might occur in time when soil and ash became intermixed if the practices of rotational farming were employed on such areas. A knowledge of the plant/ash nutrition interrelationships would appear important in this respect. Such information would be valuable also in cases where a soil or sludge covering was unavailable and a direct seeding of the ash was the only suitable alternative. The natural plant colonization of freshly deposited Hams Hall ash differs markedly from early successional stages which characterize the Black Country waste areas (Reesla) . The power station ash becomes covered with the