酸化土壤化学改良剂的筛选  

Selection of Chemical Amendments for Acidified Soil

作　　者：郑福丽[1] 谭德水[1] 林海涛[1] 江丽华[1] 刘兆辉[1] 

机构地区：[1]山东省农业科学院农业资源与环境研究所,山东济南250100

出　　处：《山东农业科学》2011年第4期56-58,共3页Shandong Agricultural Sciences

基　　金：公益性行业(农业)科研专项(200803030);国家科技支撑计划"设施菜地污染综合防控技术集成与示范"(2006BAD17B07)

摘　　要：土壤酸化直接导致了耕地土壤理化性状变差,并打破了原有的适宜作物生长的土壤生态环境条件,使作物生长发育不良,最终导致作物产量和质量下降。本研究主要是通过室内培养试验筛选合适的化学改良剂及其适宜用量。试验结果表明,闲地土壤和果园表层土壤酸化比较严重,在这类土壤上施用化学改良剂的效果较好,生石灰、轻烧粉和轻烧粉石灰氮各半混合这三种改良剂在其用量为1‰时可以提升土壤pH 2个单位,达到很好的改良效果。若农田土壤酸化不很严重,则不适宜用化学改良剂来改良土壤,必须要用时应适当降低其改良剂的用量,用量为0.5‰～1.0‰较适宜。Soil acidification directly led the soil physical and chemical properties to be worse and broke the soil ecological environment suitable for crop growth,so the crop growth was retarded and the yield and quality decreased finally.This experiment was carried out to select the suitable amendments and their application amounts by culture tests in laboratory.The results showed that acidification was very serious in fallow soil and orchard soil,so the improvement effect of amendments was evident,too.Quick lime,light calcined powder and the mixture of light calcined powder and calcium cyanamide could increase the soil pH value by 2 units at the application amount of 1‰.When the soil acidification was not serious,it was not appropriate to use chemical amendment;if it must be used,its application amount should be decreased to 0.5‰～1.0‰.

关 键 词：酸化土壤 化学改良剂 

分 类 号：S436.421.19[农业科学—农业昆虫与害虫防治]