摘要
为探究马尾松Pinus massoniana母树种子产量与叶片营养元素含量的关系,2021年3月,在福建省南平市邵武卫闽国有林场马尾松2代种子园开展N、P、K、Ca、Mg、B、Mo多元素配方施肥试验,对种子园中19个不同配方施肥处理的马尾松母树种子产量和叶片营养元素含量进行测定分析,建立单株种子产量与叶片营养元素间的二次多元回归数学关系,揭示种子产量与叶片养分间的互作规律,确定出叶片最适养分含量。结果表明,种子产量与叶片养分间存在相关性,其中叶片中的P、Mo含量与种子产量呈极显著(P<0.01)或显著(P<0.05)正相关,且P对种子产量的影响程度高于Mo;从元素间的交互效应来看,N-B、P-K、P-Ca、P-Mg、P-Mo互作对种子园产量有显著的促进效应,而N-P、N-Mo、P-B、K-B、K-Mo、Mg-B之间交互效应明显且对种子产量有显著(P<0.05)或极显著(P<0.01)抑制作用;叶片营养元素间也存在一定交互效应,N-Mo、P-K、P-B、P-Mo、K-B、P-Ca、P-Mg、Mg-B之间为协同关系,而N-P、N-B、K-Mo之间为拮抗关系;该供试地马尾松种子园的理论最高单株种子产量为31.92g;马尾松2代种子园母树叶片中7种养分的适宜含量范围为:N(13.568~16.228g·kg^(-1))、P(2.718~5.078 g·kg^(-1))、K(9.913~15.433 g·kg^(-1))、Ca(0.633~2.763 g·kg^(-1))、Mg(0.855~1.755 g·kg^(-1))、B(26.639~44.959 mg·kg^(-1))、Mo(2.076~3.436 mg·kg^(-1))。以上母树叶片营养诊断标准可相应地作为马尾松种子园叶片营养诊断标准和配方平衡施肥的参考依据。
In March 2021,experiments were conducted on application of 16 formula fertilizers of N,P,K,Ca,Mg,B and 3 concentrations of Mo in second generation seed orchard of Pinus massoniana in Shaowuweimin Forest Farm,Nanping,Fujian province.In December 2021,determinations were carried out on their leaf nutrient content and seed yield.The results showed that there was correlation between seed yield and leaf nutrients,like contents of P and Mo in leaves had extremely significant(P<0.01)or significant(P<0.05)positive relation with seed yield,and the effect of P on seed yield was higher than that of Mo.Interaction among N-B,P-K,P-Ca,P-Mg,P-Mo could promote seed orchard yield,while that among N-P,N-Mo,P-B,K-B,K-Mo,Mg-B had the opposite effect on seed yield.There was also interaction among leaf nutrients,N-Mo,P-K,P-B,P-Mo,K-B,P-Ca,P-Mg and Mg-B were synergetic,while N-P,N-B and K-Mo antagonistic.The theoretical maximal seed yield of single mother P.massoniana tree in the test site was 31.92 g.The suitable content range of seven nutrients in the mother tree leaves was as follows:N(13.568-16.228 g/kg),P(2.718-5.078 g/kg),K(9.913-15.433 g/kg),Ca(0.633-2.763 g/kg),Mg(0.855-1.755 g/kg),B(26.639-44.959 mg/kg)and Mo(2.076-3.436 mg/kg).
作者
陈元镇
陈慧婷
许冰
陆梅
李宝福
CHEN Yuanzhen;CHEN Huiting;XU Bing;LU Mei;LI Baofu(Fujian Forestry Vocational Technical College,Nanping 353000,China;Fujian Academy of Forestry,Fuzhou 350012,China)
出处
《浙江林业科技》
2023年第4期42-49,共8页
Journal of Zhejiang Forestry Science and Technology
基金
院士专家工作站科研项目(闽林院教﹝2019﹞15号,2019YSZ002)
福建省省属公益类科研专项(项目编号2011R1013-1)。
关键词
马尾松
种子园
配方施肥
母树
叶片营养诊断
种子产量
Pinus massoniana
seed orchard
formula fertilizer
mother tree
nutritional diagnosis
seed yield
