摘要
采用污泥有机肥对紫花苜蓿草施肥,研究其对紫花苜蓿草生物学特性的影响。实验结果表明,污泥有机肥对紫花苜蓿草的株高、茎粗、叶面积均有促进作用。紫花苜蓿草叶中微量元素和重金属元素含量相比对照组有所提高,未产生毒害作用。污泥有机肥施用后,土壤中营养元素、微量元素和重金属元素含量有所增加,低于土壤环境质量标准(GB15618—1995)二级。污泥有机肥可以为作物提供充足的营养元素和微量元素,促进作物生长。
The effects of sludge organic fertilizer（SOF） fertilization on the growth of alfalfa are studied and the results show the biological characteristics of alfalfa is better than that of stand without fertilization.Plant analysis indicates that concentrations of micronutrients and heavy metals in leaf under SOF fertilization is higher than those of alfalfas without fertilization.Application of SOF brings about an increase in the concentrations of nutrients,micronutrients and heavy metals in soil.So it can be a potential source of nutrients and micronutrients for plants and promote the growth of alfalfa.
出处
《工业安全与环保》
北大核心
2012年第6期94-96,共3页
Industrial Safety and Environmental Protection
基金
中华环保基金会大学生小额资助项目
