CAJ | 학술논문

分析了采集于2011年11月~2012年4月的2982份恩施州植烟区土壤样品，并与近30年来的相关数据进行了比较。结果表明：恩施州烟区酸性土壤( pH值<5．5)面积达到了37．7%，土壤有机质、全氮、碱解氮、有效磷和速效钾含量分别为(24．1±7．9) g/kg、(1．90±0．53) g/kg、(151．4±42．5) mg/kg、(41．5±21．9) mg/kg和(239．3±140．6) mg/kg。2001至2011年，酸性土壤区域增加了约29．3%；土壤有机质含量稍降低。土壤全氮和碱解氮含量在1981~2001年期间上升较快，在2001~2011年间较稳定；土壤有效磷含量自1981年来一直呈增加的趋势，其中在2001~2011年间提高的幅度较大；土壤速效钾含量在1981~2001年间变化较小，呈现稍下降趋势，而在2001~2011间增加幅度较大。恩施州烟区土壤养分演变趋势与全国多数耕地的变化趋势有所不同，分析表明这与烟草施肥密切相关。
분석료채집우2011년11월~2012년4월적2982빈은시주식연구토양양품，병여근30년래적상관수거진행료비교。결과표명：은시주연구산성토양( pH치<5．5)면적체도료37．7%，토양유궤질、전담、감해담、유효린화속효갑함량분별위(24．1±7．9) g/kg、(1．90±0．53) g/kg、(151．4±42．5) mg/kg、(41．5±21．9) mg/kg화(239．3±140．6) mg/kg。2001지2011년，산성토양구역증가료약29．3%；토양유궤질함량초강저。토양전담화감해담함량재1981~2001년기간상승교쾌，재2001~2011년간교은정；토양유효린함량자1981년래일직정증가적추세，기중재2001~2011년간제고적폭도교대；토양속효갑함량재1981~2001년간변화교소，정현초하강추세，이재2001~2011간증가폭도교대。은시주연구토양양분연변추세여전국다수경지적변화추세유소불동，분석표명저여연초시비밀절상관。
2 982 soils sampled in tobacco fields of Enshi region from November 2011 to April 2012 were tested by routine method, the results were analyzed and compared with the related data in recent 30 years. Results showed that, the percent-age of acid soils ( pH<5. 5 ) in tobacco fields in Enshi region accounted for 37. 7%. The content of soil organic matter (OM), total nitrogen (N), alkalystic N, available phosphorus (P) and available potassium (K) was (24. 1 ± 7. 9) g/kg, (1. 90 ± 0. 53) g/kg, (151. 4 ± 42. 5) mg/kg, (41. 5 ± 21. 9) mg/kg and (239. 3 ± 140. 6) mg/kg, respec-tively. Compared with the data in 2001, acid soils (pH<5. 5) in tobacco fields increased by about 29. 3%, soil OM con-tent tended to decrease. The content of soil total N and alkalystic N increased rather quickly form 1981 to 2001, while was relatively stable from 2001 to 2011. Soil available P content had tended to increase since 1981, and increased rather rapidly during 2001~2011. Soil available K content was rather stable from 1981 to 2001, whereas increased a little bit rapidly dur-ing 2001~2011. The above results implied that, the changing tendency of soil nutrients in tobacco fields in Enshi region was to some extent different from that of most arable land in China, which was closely related to the fertilization status on to-bacco.