复合污泥堆肥施用于高速公路绿化带效果的研究 Ⅰ.中央分隔带、护坡及转盘不同植物的生长响应  

Effects of Complex Sludge by Composting Applying to Highway Greenbelt Ⅰ.Consideration on Soil Chemistry, Plant Nutrient and Environmental Problems

作　　者：薛澄泽[1] 杜新科 张增强[1] 崔文社 马芸 高鹏程[1] 高坤瑞 唐新保[1] 孟昭福[1] 杨毓峰 

机构地区：[1]西北农林科技大学基础技术系,陕西杨凌712100 [2]陕西省高等级公路管理局西宝管理处 [3]西安市污水处理厂

出　　处：《农业环境保护》2000年第4期204-208,共5页Agro-Environmental Protection

摘　　要：高速公路绿化带土壤多为生土 ,植物难以生长良好。污泥含植物养分及大量有机质 ,具有肥田及改土作用。将其与秸秆进行堆肥化处理后 ,加入化肥制成复合污泥堆肥 ,施用于高速公路 ,既避开了食物链 ,对环境也无影响。在西宝、西三及西临高速公路的中央分隔带、护坡及转盘对几种树和草类进行的试验 ,证明植物响应良好 :护坡及转盘内草坪草生物量增加 ,颜色加深 ,绿色期延长 ;护坡草生长旺盛 ,根系发达 ,对护坡具有良好作用 ;中央分隔带植物高度、冠幅、地径增大。在西宝线2km的示范段全面施用 ,植物明显生长良好 ,成为一个绿色长廊的样板。与化肥相比 ,复合污泥堆肥具有明显的后效。This paper discusses the reason that plant growth was improved after complex sludge compost (CSC) applied on highway greenbelt. At firstly, in respect of the change in soil chemical and physical properties, all the index of CEC, available nitrogen and phosphorus, water content and organic matter were increased, but bulk density of the soil decreased. Secondly, in respect of plant nutrients, the contents of nitrogen, phosphorus in plant tissues were higher than that of control and increased with the amounts of CSC applied. Thirdly, the nitrate-nitrogen did not pollute the underground water as the result of its leaching only reaching 40-80cm depth. At finally, the heavy metal's bioavailability in calcarious soil of highway was very low, and there was no difference of heavy metals content in plants between CSC and control treatment. It showed that there was no accumulation of heavy metals in plant. Considering that the highway greenbelt is a close system and keeps away the human food chain, the result indicated that the application of CSC in highway greenbelt is safe.

关 键 词：复合污泥堆肥 高速公路 绿化带 植物生长响应 

分 类 号：S731.8[农业科学—林学] S141.4