马尾松初级种子园土壤养分丰缺诊断与评价  

Diagnosis and Evaluation of Soil Nutrient Abundance and Deficiency in Pinus massoniana Primary Seed Orchard

作　　者：李鹏 杨章旗[1] 陈虎[1] 梁远毅 梁贤祯 苏沃榜 Li Peng;Yang Zhangqi;Chen Hu;Liang Yuanyi;Liang Xianzhen;Su Wobang(Guangxi Academy of Forestry,Pinus massoniana Engineering Technology Research Center,Nanning 530002,P.R.China;Tengxian Damangjie Seed Garden)

机构地区：[1]广西马尾松工程技术研究中心(广西壮族自治区林业科学研究院),南宁530002 [2]广西藤县大芒界种子园

出　　处：《东北林业大学学报》2022年第9期90-96,共7页Journal of Northeast Forestry University

基　　金：广西科技基地和人才专项(桂AD19254004);八桂学者和八桂青年学者专项,“十三五”国家重点研发计划项目(2017YFD060030202、2017YFD0601201);广西创新驱动专项(桂AA17204087-1、桂AA17204087-4)。

摘　　要：通过土壤养分和母树种子产量数据统计,进行土壤养分丰缺分级诊断,利用回归分析诊断识别养分障碍因子,通过主成分分析构建表征土壤肥力的最小数据集指标,并运用土壤肥力综合指数法评价种子园土壤综合肥力整体水平。结果表明:种子园66.67%的土壤pH小于4.5,强酸性土壤环境,有机质和速效氮含量适中,速效铁中等,速效钾、速效钙和速效镁较缺乏,有效磷、速效锌和速效硼严重缺乏;影响种子产量的主导因子为氮、磷、镁、锌,及氮-镁、钾-锌和钙-镁的交互作用,均对种子产量促进作用显著;pH、有机质、速效氮、速效磷和速效镁可以作为反映种子园土壤肥力综合水平和产量的最小数据集指标;种子园综合土壤肥力处于中等水平,全指标和最小数据集指标土壤综合肥力指数间,及其与单株种子产量间均具有极显著正相关关系。因此,为提高种子园土壤肥力和产量,建议重视氮、磷、镁、锌肥的合理施用,补充磷、锌、硼肥,尤其要科学配比施肥,并采取相应措施改善土壤pH,使土壤强酸性向酸性、弱酸性转变。Through statistics of soil nutrient and seed yield mother tree data to perform classification diagnosis of soil nutrient abundance and deficiency,we used regression analysis to diagnose and identify nutrient barrier factors,used principal component analysis to construct a minimum data set index that characterizes soil fertility,and used the comprehensive soil fertility index method to evaluate the overall level of comprehensive soil fertility in the seed orchard.The results shows the soil pH of 66.67%of the seed orchard is in a strongly acidic environment<4.5.The content of organic matter and available nitrogen is relatively suitable,available iron is medium,available potassium,available calcium and available magnesium are relatively lacking,and available phosphorus and available boron are severely lacking.The obstacle factors that affect the yield of seed are nitrogen,phosphorus,magnesium and zinc,and the interaction of nitrogen-magnesium,potassium-zinc and calcium-magnesium is significant,which has a significant effect on yield promotion.The pH,organic matter,available nitrogen,available phosphorus and available magnesium can be used as the minimum data set indicators to reflect the comprehensive level of soil fertility and yield in seed orchards.The comprehensive soil fertility of the seed orchard is at a medium level,and there is a very significant positive correlation between the comprehensive soil fertility index of the full index and the minimum data set index and the yield of individual seeds.In order to improve the soil fertility and seed yield of seed orchards,it is recommended to pay attention to the rational application of nitrogen,phosphorus,magnesium,and zinc fertilizers,supplement phosphorus and boron fertilizers,especially fertilize the soil in a scientific proportion,and take corresponding measures to improve soil pH and make the soil from strong acidity to acidity and weak acidity.

关 键 词：马尾松 种子园 土壤养分 

分 类 号：S791.27[农业科学—林木遗传育种]