CAJ | 학술논문

为了探明不同密度马尾松人工林的土壤肥力，在桂西北乐里林场的同一坡面上，选择6年生不同密度（处理1为1050株／hm2、处理2为1125株／hm2、处理3为1200株／hm2、处理4为1500株／hm2）样地，研究其土壤（0～40 cm 土层）的肥力状况。结果表明：1）各密度土壤 pH 为4．91～5．35，但差异不明显。2）各密度土壤有机质含量为10．28～34．70 g／kg，平均值依次为处理1＞处理2＞处理4＞处理3。3）各密度土壤 N／P／K 全量依次为0．67～1．60 g／kg、0．49～0．99 g／kg 和11．02～21．56 g／kg，平均值依次为处理1＞处理2＞处理3＞处理4。4）各密度土壤速效 N／P／K 含量依次为79．4～143．0 mg／kg、0．6～2．0 mg／kg 和194．5～959．2 mg／kg，平均值依次处理1＞处理2＞处理3＞处理4。5）各密度土壤有效 Ca／Mg／Cu／Zn／B 的含量依次为397．8～959．2 mg／kg、90．1～164．9 mg／kg、0．45～1．25 mg／kg、0．54～2．25 mg／kg和0．11～0．21 mg／kg，除 Ca 含量为处理1＞处理2＞处理3＞处理4外，有效 Mg／Cu／Zn／B 含量与密度的关系不明显，差异微小。
위료탐명불동밀도마미송인공림적토양비력，재계서북악리림장적동일파면상，선택6년생불동밀도（처리1위1050주／hm2、처리2위1125주／hm2、처리3위1200주／hm2、처리4위1500주／hm2）양지，연구기토양（0～40 cm 토층）적비력상황。결과표명：1）각밀도토양 pH 위4．91～5．35，단차이불명현。2）각밀도토양유궤질함량위10．28～34．70 g／kg，평균치의차위처리1＞처리2＞처리4＞처리3。3）각밀도토양 N／P／K 전량의차위0．67～1．60 g／kg、0．49～0．99 g／kg 화11．02～21．56 g／kg，평균치의차위처리1＞처리2＞처리3＞처리4。4）각밀도토양속효 N／P／K 함량의차위79．4～143．0 mg／kg、0．6～2．0 mg／kg 화194．5～959．2 mg／kg，평균치의차처리1＞처리2＞처리3＞처리4。5）각밀도토양유효 Ca／Mg／Cu／Zn／B 적함량의차위397．8～959．2 mg／kg、90．1～164．9 mg／kg、0．45～1．25 mg／kg、0．54～2．25 mg／kg화0．11～0．21 mg／kg，제 Ca 함량위처리1＞처리2＞처리3＞처리4외，유효 Mg／Cu／Zn／B 함량여밀도적관계불명현，차이미소。
The soil fertility (0~40 cm soil layers)of P .massoniana plantations with six-year old at the same slope surface of Leli forest farm under four different stand densities (treatment 1 with 1050 trees/hm2 ,treatment 2 with 1 125 trees/hm2 ,treatment 3 with 1 200 trees/hm2 and treatment 4 with 1500 trees/hm2 ) was determined to explore the effects of different stand densities on soil fertility of P .massoniana plantations.The results showed that:1)There is no obvious difference in pH among four stand densities;2)The range of soil organic matter content of different treatments is 10.28~34.70 g/kg, and the average value is treatment 1> treatment 2 > treatment 4 > treatment 3;3)Total N,P and K content of four different treatments is 0.67 ~ 1.60 g/kg,0.49 ~ 0.99 g/kg and 11.02 ~ 21.56 g/kg respectively,and the average value is treatment 1 > treatment 2 > treatment 3 > treatment 4;4)The available N,P and K content of four different treatments is 79.4~ 143.0 mg/kg,0.6 ~2.0 mg/kg and 194.5~959.2 mg/kg separately,and the average value is treatment 1 > treatment 2 > treatment 3 >treatment 4; 5 ) The available Ca, Mg, Cu, Zn and B content of four different treatments is 397.8~959.2 mg/kg,90.1~164.9 mg/kg,0.45~1.25 mg/kg,0.54~2.25 mg/kg and 0.11~0.21 mg/kg respectively,and the Ca content is treatment 1 > treatment 2 > treatment 3 > treatment 4 but there are no obvious differences in Mg,Cu,Zn and B content among four different treatments.