CAJ | 학술논문

研究淮安市不同农域、不同土壤类型1982年以来土壤pH值变化规律，结果表明：2013年全市省级监测点耕层土壤pH值在5.4~8.1，平均值7.0，平均值与1982年相比减少0.8个单位；1982—2013年，土壤pH值平均值总体呈下降趋势；2009—2013年，土壤pH值基本趋于稳定。氮肥过量施用是农田土壤酸化加速的首要原因，其次作物根系分泌物直接导致根际土壤pH值降低。另外，生理酸性肥料的施用也会引起土壤pH值的下降。
연구회안시불동농역、불동토양류형1982년이래토양pH치변화규률，결과표명：2013년전시성급감측점경층토양pH치재5.4~8.1，평균치7.0，평균치여1982년상비감소0.8개단위；1982—2013년，토양pH치평균치총체정하강추세；2009—2013년，토양pH치기본추우은정。담비과량시용시농전토양산화가속적수요원인，기차작물근계분비물직접도치근제토양pH치강저。령외，생리산성비료적시용야회인기토양pH치적하강。
Changes discipline of soil pH value in different agricultural domain and soil types since 1982 in Huaian City were studied.The results showed that provincial monitoring points soil pH value was 5.4~8.1 in 2013 ,the average value was 7.0 ,the average value decreased by 0.8 units compared with 1982;The average value of total soil pH value decreased from 1982 to 2013;Soil the mean value of pH tend to be stable from 2009 to 2013.Excessive application of nitrogen fertilizer of farmland was the primary cause of accelerated soil acidification ,second crop root exudates directly led to the rhizosphere soil pH value decreased.In addition ,the use of physiological acidic fertilizer could also cause decrease of soil pH value.