配方施肥对华北落叶松各器官非结构性碳水化合物特征的影响  

Effects of Formula Fertilization on the Characteristics of Non-structural Carbohydrates in the Organs of Larix principis-rupprechtii

作　　者：李帆[1,2] 于嘉俐 贾忠奎 郝国宝[1] 李岩 王利东 LI Fan;YU Jia-li;JIA Zhong-kui;HAO Guo-bao;LI Yan;WANG Li-dong(State Key Laboratory of Efficient Production of Forest Resources,Key Laboratory for Silviculture and Conservation of Ministry of Education,Beijing Forestry University,Beijing 100083,China;Ningxia Hui Autonomous Region Forestry Investigation and Planning Institute,Yinchuan 750000,Ningxia,China;Saihanba Mechanized Forest Farm of Hebei Province,Weichang 068466,Hebei,China)

机构地区：[1]林木资源高效生产全国重点实验室,北京林业大学森林培育与保护教育部重点实验室,北京100083 [2]宁夏回族自治区林业调查规划院,宁夏银川750000 [3]河北省塞罕坝机械林场,河北围场068466

出　　处：《西北林学院学报》2024年第2期44-50,共7页Journal of Northwest Forestry University

基　　金：国家自然科学基金面上项目(31870387)。

摘　　要：探究配方施肥对华北落叶松针叶、枝条和细根的非结构性碳水化合物(NSC)的影响,为华北落叶松高效施肥技术提供参考依据。以32年生华北落叶松为研究对象,采用N、P、K三因素三水平正交设计L 9(34),以不施肥为对照,研究配方施肥对华北落叶松针叶、枝条和细根的NSC及组分(可溶性糖、淀粉)含量的影响,分析华北落叶松各器官NSC及组分含量的相关关系。结果表明,1)华北落叶松针叶、枝条和细根非结构性碳水化合物含量随月份呈显著变化,基本均在10月达到峰值,且3个器官中NSC均以可溶性糖为主。2)各施肥处理对针叶、枝条和细根的NSC及组分含量的表现不同,其中针叶和细根的NSC含量分别在处理T4和T8较CK平均增幅最大,为29.65%、23%;而枝条的NSC含量和可溶性糖含量与CK的平均增幅相比表现为减少。3)相关性分析显示:针叶、枝条和细根的NSC含量与其可溶性糖含量和淀粉含量间均存在极显著正相关(P<0.01);细根NSC含量与针叶和枝条的可溶性糖含量均存在显著负相关(P<0.05)。4)N、P、K肥对华北落叶松各器官NSC及组分含量均有一定影响;N肥对细根NSC及组分含量均产生显著增加影响,P肥和K肥对各指标显著性影响有所不同;改善华北落叶松非结构性碳水化合物特征的最佳施肥方案为N 3P 3K 2(N 528.78 g·株^(-1)、P 1621.58 g·株^(-1)、K 172.98 g·株^(-1))。施用适宜的N、P、K配方能有效改善华北落叶松针叶、枝条和细根的NSC及组分含量,且各器官在生长过程中存在相互平衡和动态调配的关系。The objective of this study was to investigate the effect of formula fertilization on non-structural carbohydrates(NSC)of the leaves,branches,roots of Larix principis-rupprechtii to provide a reference basis for efficient fertilization technology of L.principis-rupprechtii.Trees of 32-year-old L.principis-rupprechtii were taken as the research objects,using a three-factor,three-level orthogonal design L 9(34)with no fertilization as the control to investigate the monthly dynamic effects of formula fertilization on the NSC and component contents of the leaves,branches and roots,and to analyze the correlations of NSC and component contents of different organs.The results showed that 1)the content of non-structural carbohydrates in the leaves,branches and roots changed significantly among different months,and the peak values were mostly found in October,and soluble sugars were the main component of NSC in all the three organs.2)The fertilization treatments differed in their performance on NSC and fraction content of the leaves,branches,roots.The NSC contents of the leaves and roots increased most significantly in treatments T4 and T8,with the average promotion of 29.65%and 23%,respectively,compared to the control.The soluble sugar and NSC contents of the branches,by contrast,showed a decrease trend when compared with the average increase of the control.3)Correlation analysis showed that there was a highly significant and positive correlation between NSC and fraction content in the three organs(P<0.01);the NSC content of root was negatively correlated to the soluble sugar content of both leaves and branches(P<0.05).4)Nitrogen,phosphorus and potassium fertilizers exhibited certain effects on the NSC and component content;nitrogen fertilization had significant effect on the increase of NSC and component content of roots,while phosphorus and potassium fertilization had different effects on the significance of each index;the best fertilization treatment was N 3P 3K 2(N 528.78,P 1621.58,K 172.98 g·plant^(-1)).Appropriate

关 键 词：配方施肥 华北落叶松 非结构性碳水化合物 综合评价 

分 类 号：S753.532[农业科学—森林经理学]