污泥堆肥农用效应研究

Research on Effect of Sludge Compost in Agricultural Utilization

污泥是污水处理厂剩余物,随着社会的发展,污泥处置将成为一个潜在问题。污泥因其含有大量有机质和氮磷钾等营养成分,是非常值得利用的肥源。以西南科技大学污水处理厂污泥为研究对象,开展了污泥堆肥应用效应的研究。采用大田分区试验的方法,研究了西南科技大学污水厂污泥堆肥土地利用中作物的生长状况。结果表明:污泥堆肥用于作物种植,具有非常好的肥效,不仅能提高作物产量,并且在品质各方面均高于对照,使几种作物表现出高于空白对照的生长状况;不同处理施肥量下,作物生长状况为污泥堆肥+化肥>污泥堆肥>化肥>空白对照。因此,污泥堆肥供肥潜力大,是一种值得合理利用的肥源。

Sludge is the remains of wastewater treatment plant. With the development of society, sludge treatment will be a potential problem. Sludge contains many organic matters which are well used as fertilizer. Taking southwest university of science and technology＇s wastewater treatment plant as the research object, effect research of sludge compost in agricultural utilization is carried out. The growth condition of crops in sludge compost land of the southwest university of science and technology wastewater treatment plant is studied by farm test way. The result shows that sludge compost used in agriculture has good fertilizer efficiency which not only increases the crop outputs, but also makes quality better than comparison. Different fertilization causes different growth situation, that is： sludge compost and fertilizer〉sludge compost〉fertilizer〉blank comparison. Therefore, the sludge has great potential as a good fertilizer and is worthy to reasonable reuse.