控释肥硫膜对棕壤酸碱平衡体系的影响  

Effects of Sulfur-coating from Sulfur-coated Fertilizer on Acid-base Balance in Brown Soil

作　　者：张庆富[1] 张民[1] 宗晓庆[1] 颜晓[1] 

机构地区：[1]山东农业大学资源与环境学院/国家缓控释肥工程技术研究中心/作物生物学国家重点实验室,山东泰安271018

出　　处：《水土保持学报》2010年第2期184-187,191,共5页Journal of Soil and Water Conservation

基　　金：国家自然科学基金(30871593);国家"十一五"科技支撑计划(2007BAD31B04;2006BAD10B07)

摘　　要：研究了控释肥硫膜对棕壤酸碱平衡体系的影响,探讨硫包膜控释肥的农用安全性,从而为控释肥的改进和推广应用提供科学依据,也为硫包膜肥料长期大量施用可能给土壤带来的问题提出预警。结果表明:在玉米生长期,控释肥硫膜并没有显著影响土壤的pH值。玉米生长的第68天时,施加0.5倍、1倍、2倍量的硫膜分别使土壤交换性酸增加了0.038,0.057,0.040cmol/kg,使土壤交换性Al3+分别增加了14.29%,15.15%,11.11%,且差异都达显著性水平,但在玉米的其它生长时期,硫膜并未显著影响土壤中交换性酸、交换性Al3+、交换性H+的含量。在玉米生长后期控释肥硫膜能够增加土壤交换性钙离子和交换性镁离子含量,增加交换性钾离子含量。The effects of sulfur-coating from sulfur-coated fertilizer on acid-base balance in brown soil and the agro-security of sulfur coated fertilizer were studied by a pot experiment to improve controlled-release fertilizer and promote the scientific basis of use and also to provide the early-warning for effects of large quantities of sulfur-coating applied.The experimental results showed that sulfur-coating from sulfur-coated fertilizer did not affect the soil pH value significantly in the growth of corn.In the 68th days,exchangeable acidity of the soil applied 0.5 times,one times,two times amount of sulfur-coating were increased 0.038,0.057,0.040 cmol/kg as well as the soil exchangeable Al^3＋ were increased by 14.29%,15.15%,11.11%,and the differences are significant.However,at the other growth stage,sulfur-coating did not affect the content of soil exchangeable acidity,exchangeable Al^3＋ and exchangeable H^＋ significantly.Exchangeable calcium and magnesium,exchangeable potassium of soil were increased at the after growth stage of corn.

关 键 词：控释肥硫膜 棕壤 酸碱平衡 交换性盐基离子 

分 类 号：S153.4[农业科学—土壤学] S145.5[农业科学—农业基础科学]