畢業生實習就業跟蹤表5篇-資料下載頁

　　

【正文】 馬彥濤，胡將軍．國內外火電廠煙氣脫硫石膏的特點利用及處置口]．粉煤灰綜合利用，2003，(4)t 50 [2] 丁字，桂苗苗．脫硫石膏綜合利用研究EJ]．建筑技術開發，1999，(2)：38． [3] [4] [5] 163 [7 [82 馮金煌，江水．脫硫石膏及其綜合利用探討EJ]．非金屬礦，2000，(6)：18—20．張建鋒，喬勇進，焦明．鹽堿地改良利用研究進展EJ]．山東林業科技，1997，(3)：5． 桑以琳．內蒙古河套灌區堿化土壤的發生原因和特性EJ]．土壤學報，1996，(11)：398 404 朱祖祥．土壤學EM]．北京：農業出版社，1993．李韻珠，李保國．土壤溶質運移[M]．北京：科技出版社，1 998．Korcak R F．Effects of Coal Co mbustion By—products Use as Lime Substitutes in Nutrition of Apples in Three Soil~EJ]．Plant and Soil，1985，437—441． E93 Graford．Reclamation of Safinesodic Soils throng Sub Soiling，Gypsum Application and Leaching with Tube Well water[J]．Ph D，1984，21 23．[1o] Brown，P L，A D Halvorson，F H Sideway，HF．Saline Seep Diagnosis，Co ntrol，and Reclamation[R]．U S Department of Agriculture Conservation Research Report No．30，1 982．The M ecganism on Sodic Soil s Throwed Desul furized Gypsum was Anal yzed from SA and pH SHI Yi，YANG Pei—ling，ZHANG Jian—guo。，WANG Jin—man，DUAN Jian o，XIANG Guang—ming。(1．College of W ater Conservancy and Civil Engineering。China Agricultural University，Beijing 100083，China；2．The Place for scientific research in water in Ba Meng，Linhe 015100，China；3．Department of Thermal Engineering，Tsinghua University，Beijing 1 0008 4，China)Abstract：The fact that different amount of desulfurized gypsum was used in sodic soil and strongly alkali soil was studied in the paper．The laws of the change of SAR(sodic absorption ratio)on both kinds of land and the change of pH in soil solution were studied．As it was turned out，the vale of SAR and Ph on amended soil was less than that of virgin soil．M eanwhile，the vale of SAR and pH changed greatly in different treatments．After a year，in which，sodic soil and strongly alkali soil were suffered by that desulfurized gypsum was used and the water was penetrated，the vale of SAR of sodic soil and strongly alkali soil w hich depth were more than 1 5 cm varied litter more，but the vale of pH didn’t almost vary at al1． This indicated that exchangeable sodium percentage(ESP)of sodic soil and strongly alkali soil was reduced，physical and chemic characters of that were improved in the 1 5 cm depth of soil． For the reason of the ability of infiltration is very poor in sodic soil and strongly alkali soil，the saline w hich was leached from 1 5 cm depth of sodic soil and strongly alkali soil was not excluded form the body of soil in all，the rest was remained in the soil body．It is not surprising that the time is very long before sodic soil and strongly alkali soil are improved in every inch in physical and chemic characters．As the case maybe，the result of m end for strongly alkali soil on the mence is better than that of sodic soil for the fact that initial character of physics and chemistry is difference between sodic soil and strongly alkali soil n essence．Key words：sodic soil；desulfurized gypsum ；SAR；pH 1O 維普資訊