安徽农业大学学报
安徽農業大學學報
안휘농업대학학보
JOURNAL OF ANHUI AGRICULTURAL UNIVERSITY
2013年
1期
11-14
,共4页
王雷%赵阳%周佳佳%徐小牛*
王雷%趙暘%週佳佳%徐小牛*
왕뢰%조양%주가가%서소우*
毛竹%土壤肥力%生物量%林分生产力%相关分析
毛竹%土壤肥力%生物量%林分生產力%相關分析
모죽%토양비력%생물량%림분생산력%상관분석
Phyllostachys pubescens%soil fertility%biomass%forest productivity%regression analysis
采用常规的样地调查法,对安徽6个主产地的毛竹林土壤养分与生产力关系进行调查分析.结果表明,不同产地毛竹林生长及其生产力水平差异明显,林分平均密度为2298~3496株·hm-2,平均胸径9.0~10.8 cm,平均立竹度0.21~0.34,林分生物量54.7~94.6 t·hm-2;土壤容重多数在1.20 g·cm-3以上,有机质含量25.6~40.2 g·kg-1,全氮1.62~4.56 g·kg-1,全磷0.61~0.92 g·kg-1,有效氮56.5~78.8 mg·kg-1.相关分析显示毛竹林生物量与土壤有机质、全氮、全磷和全钾呈显著正相关,立竹度与土壤有机质、土壤全磷和全钾呈显著正相关.改善土壤物理性、提高土壤肥力特别是有机质含量是促进毛竹林优质丰产的重要措施.
採用常規的樣地調查法,對安徽6箇主產地的毛竹林土壤養分與生產力關繫進行調查分析.結果錶明,不同產地毛竹林生長及其生產力水平差異明顯,林分平均密度為2298~3496株·hm-2,平均胸徑9.0~10.8 cm,平均立竹度0.21~0.34,林分生物量54.7~94.6 t·hm-2;土壤容重多數在1.20 g·cm-3以上,有機質含量25.6~40.2 g·kg-1,全氮1.62~4.56 g·kg-1,全燐0.61~0.92 g·kg-1,有效氮56.5~78.8 mg·kg-1.相關分析顯示毛竹林生物量與土壤有機質、全氮、全燐和全鉀呈顯著正相關,立竹度與土壤有機質、土壤全燐和全鉀呈顯著正相關.改善土壤物理性、提高土壤肥力特彆是有機質含量是促進毛竹林優質豐產的重要措施.
채용상규적양지조사법,대안휘6개주산지적모죽림토양양분여생산력관계진행조사분석.결과표명,불동산지모죽림생장급기생산력수평차이명현,림분평균밀도위2298~3496주·hm-2,평균흉경9.0~10.8 cm,평균립죽도0.21~0.34,림분생물량54.7~94.6 t·hm-2;토양용중다수재1.20 g·cm-3이상,유궤질함량25.6~40.2 g·kg-1,전담1.62~4.56 g·kg-1,전린0.61~0.92 g·kg-1,유효담56.5~78.8 mg·kg-1.상관분석현시모죽림생물량여토양유궤질、전담、전린화전갑정현저정상관,립죽도여토양유궤질、토양전린화전갑정현저정상관.개선토양물이성、제고토양비력특별시유궤질함량시촉진모죽림우질봉산적중요조시.
The productivity of Phyllostachys pubescens stands and their soil nutrients at the six main distri-bution areas in Anhui were studied using the conventional plot survey method. The result showed that there ex-isted significant difference in growth and productivity of Phyllostachys pubescens stands amongst the different main areas. The mean densities were from 2 298 to 3 496 culms·hm-2 with the mean DBH from 9.0 cm to 10.8 cm. The mean stand density indices were ranged from 0.21 to 0.34. The stand biomass averaged from 54.7 to 94.6 t·hm-2. The properties of soils under the Phyllostachys pubescens stands differed significantly at different sites. The mean bulk densities for most soils were over 1.20 g·cm-3. The mean concentrations of soil organic matter ranged from 25.6 to 40.2 g·kg-1, and the total N from 1.62 to 4.56 g·kg-1, total P from 0.61 to 0.92 g·kg-1, available N from 56.5 to 78.8 mg·kg-1. Results from the regression analysis showed that the biomass of Phyllostachys pu-bescens stand was significantly and positively correlated with soil organic matter, total N, total P and total K (p<0.05). The stand density index was significantly and positively correlated with soil organic matter, total P and total K (p<0.05). This suggests that to decrease soil bulk density and to increase organic matter content are the impor-tant measures for promotion of the high-quality and productivity of Phyllostachys pubescens stands.
