CAJ | 학술논문

系统分析了我国辽宁典型褐土区阜新和凌源市2个玉米长期施肥定位试验点的数据资料，研究化肥N、 P和有机肥（M）的不同组合（N、 NP、 M、 MN、 MNP）及不施肥（CK）各处理下玉米产量变化、产量可持续指数（SYI）及其与土壤有机质的关系。结果显示， M、 MN、 MNP处理下土壤有机质（ SOM）含量比CK、 N、 NP处理显著增加5.2 g· kg-1～11.1 g· kg-1；各试验点不同施肥下玉米产量差异大，与对照相比，各施肥处理均显著提高玉米产量，其中MNP处理的产量最高（阜新6757 kg· hm-2、凌源10467 kg· hm-2），但其与化肥（ N、 NP）处理间无显著差异； MN和MNP处理的产量可持续性指数（SYI）分别为0.50和0.54，显著高于其他处理（N、 NP、 M、 CK），表明增施有机肥可显著提高作物产量可持续性。施用有机肥下， SOM含量与SYI呈极显著正相关（ R2＝0.74），表明配合施用有机肥显著提高SOM含量，进而提高玉米产量的可持续性。图5，表3，参19。
계통분석료아국료녕전형갈토구부신화릉원시2개옥미장기시비정위시험점적수거자료，연구화비N、 P화유궤비（M）적불동조합（N、 NP、 M、 MN、 MNP）급불시비（CK）각처리하옥미산량변화、산량가지속지수（SYI）급기여토양유궤질적관계。결과현시， M、 MN、 MNP처리하토양유궤질（ SOM）함량비CK、 N、 NP처리현저증가5.2 g· kg-1～11.1 g· kg-1；각시험점불동시비하옥미산량차이대，여대조상비，각시비처리균현저제고옥미산량，기중MNP처리적산량최고（부신6757 kg· hm-2、릉원10467 kg· hm-2），단기여화비（ N、 NP）처리간무현저차이； MN화MNP처리적산량가지속성지수（SYI）분별위0.50화0.54，현저고우기타처리（N、 NP、 M、 CK），표명증시유궤비가현저제고작물산량가지속성。시용유궤비하， SOM함량여SYI정겁현저정상관（ R2＝0.74），표명배합시용유궤비현저제고SOM함량，진이제고옥미산량적가지속성。도5，표3，삼19。
We investigated soil organic matter (SOM) content,grain yield of maize and sustainability yield index (SYI) and their rela-tionship in Fuxin and Lingyuan sites of Liaoning province.The treatments included no fertilizer control (CK),nitrogen fertilizer(N),N and phosphorus fertilizers(NP),manure(M),manure and N fertilizer(MN),and manure combined with N and P fertilizers(MNP).Re-sults indicated that SOM content was significantly increased by 5.2 g· kg -1 ~11.1 g· kg-1 under the organic treatments ( M, MN, MNP), compared with the other inorganic treatments (CK, N, NP) .The highest maize yield (6 757 kg· hm-2 for Fuxin site and 10 467 kg· hm-2 for Lingyuan site ) was observed under the MNP treatment and the lowest one was observed under the CK treatment at the both sites.SYI values were 0.50 and 0.54 under the MN and MNP treatments respectively , both significantly higher than the other treatments.This indicated that organic manure application can enhance sustainability of maize yield .SYI was significantly correlated with SOM content ( R2 =0.74 ) under manure application , indicating that the increase in SYI induced by manure application was at-tributed to the SOM increase.