CAJ | 학술논문

以6年生I－107欧美杨为试材，研究了CK（对照，习惯施肥）、T1（断根＋习惯施肥）、T2（断根＋有机肥）、T3（断根＋有机肥＋覆膜）和T4（断根＋有机肥＋覆膜＋灌溉）等不同措施对杨树生长及根际土壤学特征的影响。结果表明：与CK相比，T4处理明显增加了根际土壤中细菌数、真菌数、微生物总量及微生物量碳、氮质量分数，其中微生物量碳、氮质量分数分别增加190．02％和134．64％；还显著提高了根际土壤中脲酶、过氧化氢酶、多酚氧化酶、蔗糖酶活性及有机碳、活性有机碳、碱解氮、速效磷、速效钾质量分数和土壤电导率值，但明显降低了pH值。在4种组合措施中，以T4处理的胸径、树高和材积生长率最高，分别较CK提高77．42％、113．94％和83．17％。同T4处理相比，T1、T2和T3处理对杨树生长及根际土壤特性的影响作用较小。综合分析认为，断根、有机肥、覆膜和灌溉等措施的协同作用对I－107欧美杨生长的应用效果最佳。
이6년생I－107구미양위시재，연구료CK（대조，습관시비）、T1（단근＋습관시비）、T2（단근＋유궤비）、T3（단근＋유궤비＋복막）화T4（단근＋유궤비＋복막＋관개）등불동조시대양수생장급근제토양학특정적영향。결과표명：여CK상비，T4처리명현증가료근제토양중세균수、진균수、미생물총량급미생물량탄、담질량분수，기중미생물량탄、담질량분수분별증가190．02％화134．64％；환현저제고료근제토양중뇨매、과양화경매、다분양화매、자당매활성급유궤탄、활성유궤탄、감해담、속효린、속효갑질량분수화토양전도솔치，단명현강저료pH치。재4충조합조시중，이T4처리적흉경、수고화재적생장솔최고，분별교CK제고77．42％、113．94％화83．17％。동T4처리상비，T1、T2화T3처리대양수생장급근제토양특성적영향작용교소。종합분석인위，단근、유궤비、복막화관개등조시적협동작용대I－107구미양생장적응용효과최가。
A field experiment was conducted to evaluate the effects of different combination of measures on the growth of six -year-old poplar (Populus×euramre icana cv.‘Neva’)and biological characteristics of rhizosphere soil .Five treatments were in-cluded CK( conventional fertilization), T1(root pruning and conventional fertilization), T2(root pruning and organic ma-nure), T3(root pruning, organic manure and plastic mulching) and T4(root pruning, organic manure, plastic mulching and irrigation ) .T4 treatment significantly increased the bacteria population , fungus population , total microorganism a-mount, microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN) compared to CK.Especially, MBC and MBN contents increased by 190.02%and134 .64%, respectively.The enzymatic activities of urease , catalase, polyphenol oxidase and invertase , the concentrations of total organic carbon , active organic carbon , alkaline hydrolysis N , available P and available K , and electrical conductivity in the rhizosphere soil were also improved by T 4 .However , the pH of rhizo-sphere soil was obviously decreased by T 4 .In addition, the growth rates of DBH ( diameter at breast height , 1.3 m) , tree height and volume were the highest for T 4, demonstrating significant increases by 77.42%, 113.94%and 83.17%in com-parison with CK, respectively.In contrast to T4, T1, T2 and T3 had less effects on growth ofP opulus×euar mericana cv.‘Neva’ and biological characteristics in the rhzosphere soil .The synergistic effect of root pruning , organic manure, plastic mulching and irrigation was beneficial to the growth of Populus×ue rame ricaan cv.‘Ne va’ and rhizosphere soil characteristics.