摘要
研究了生物炭添加对污泥堆肥改良园林土壤肥力的促进效果。结果表明:适当比例(0~10%)污泥堆肥施加能够显著提升土壤肥力,除了提供有机质和氮、磷、钾等营养元素外,还可以提高土壤脲酶、过氧化性酶等的活性,改善土壤微生物种群结构,从而提高黑麦草产量;生物炭的添加,可以提高污泥堆肥腐熟度,进一步提高污泥堆肥对土壤肥力的促进作用,利于植物生长。同时,可以缓解污泥堆肥中盐分等有害物质对土壤微生物活性和植物生长带来的不利影响。生物炭添加能更好地促进污泥堆肥在园林绿化中的应用。
This study investigated the effect of sewage sludge compost with biochar on soil improvement. The results showed that the appropriate proportion （0-10%） sewage sludge compost can significantly improve soil fertility. A- part from increasing the nutrients such as organics, nitrogen, phosphorus and potassium, the enzymatic activity such as urease, catalase can be improved to improve the quantity and structures of microbial community in soil. Atl these impacts improve the production of ryegrass. The addition of biochar can improve putrescibility of sludge compost and further improve the impact of sludge compost on soil fertility which is beneficial to soil fertility. Moreover, biochar can alleviate the adverse effects of harmful effects such as salinity in compost on soil microbial activity and plants growth. The addition of biochar can better promote the application of sludge composting in landscaping.
出处
《绿色科技》
2017年第8期95-98,100,共5页
Journal of Green Science and Technology
关键词
污泥堆肥
生物炭
园林
土壤改良
酶活性
sludge compost
biochar
landscaping
soil improvement
enzymatic activity
