不同树种土壤酶活性、养分特征及其与林下参红皮病发病指数的关系  

Soil Enzyme Activity, Nutrient Characteristics of Different Kinds of Trees and Their Relationship with SHBI of Woodsgrown Ginseng Red Coating Root Disease

作　　者：李腾懿 孙海[1] 张丽娜[1] 张亚玉[1] 

机构地区：[1]中国农业科学院特产研究所,长春130112

出　　处：《吉林农业大学学报》2013年第6期688-693,715,共7页Journal of Jilin Agricultural University

基　　金：吉林省科技发展计划项目(20101583;20110266;20120922)

摘　　要：对林下参护育中选择的楸子树、色树、榆树下的土壤酶活性与土壤有效养分含量进行了测定和分析,并结合不同树种下林下参红皮病的发病指数进行多元线性回归分析。结果表明:色树下的土壤有效磷和速效钾含量最高;榆树下的碱解氮含量、过氧化物酶活性及酸性磷酸酶活性最高;楸子树下的有机质含量和蔗糖酶活性最高;相同树种树上、树下的土壤酶活性和养分含量均表现为树下>树上,并且差异显著;林下参红皮病的发病指数与土壤酶活性以及有效养分含量关系密切,拟合出最佳方程为Y=-1.701+0.075X1+4.849X3+0.033X5-0.005X6-0.010X7-0.005X8,R=0.978,与有机质含量(X1)、过氧化物酶活性(X3)以及酸性磷酸酶活性(X5)呈正相关,偏相关系数分别为0.927,0.902,0.934,而与碱解氮(X6)、有效磷(X7)以及速效钾含量(X8)呈负相关,偏相关系数分别为-0.897,-0.863,-0.942;色树下土壤更适合林下参护育,能够有效减轻红皮病的发生,红皮病发病指数最低。Soil nutrient content and soil enzyme activity of three kinds of trees, Malus pnmifolia, acer mono and elm, were detected and analyzed. Based on SHBI of woodsgrown ginseng red coating root dis- ease, multiple linear regression analysis was carried out. The results show that the content of soil avail- able phosphorus and available potassium under acer mono was the highest; available nitrogen content, peroxidase activity and phosphatase activity were the highest supreme under elm; organic matter content and sucrase activity were the highest under Malus prunifolia; soil enzyme and nutrient content under the same tree were higher than those on the tree, and the difference wad significant; there was positive corre- lation between SHBI of ginseng red coating root disease（Y） and organic content（X1）, peroxidase activity （X3） and phosphatase aetivity（Xs）, and the coefficients of partial correlation were 0.927, 0.902 and 0.934, respectively. There was negative correlation between SHBI of ginseng red coating root disease（Y） and available nitrogen（X6）, phosphorus（X7） and potassium（X s）, and the coefficients of partial correla- tion were - 0.897, - 0. 863 and - 0.942, respectively, the optimum fitting equation was Y = - 1.701 ＋ 0.075X1 ＋ 4.849X3 ＋ 0.033X5 - 0.005X6 - 0.010X7 - 0.005X8, R = 0.978. The acer mono can re- duce SHBI of ginseng red coating root disease, therefore, it is more suitable for nursing woodsgrown gin- seng.

关 键 词：土壤酶 树种 有效养分 林下参 红皮病 

分 类 号：S567.51[农业科学—中草药栽培]