摘要
为了解丛枝菌根真菌(AMF)和不同形态氮对杉木(Cunninghamia lanceolata)生长和养分吸收的影响,以1 a生杉木幼苗接种摩西球囊霉(Glomus mosseae)和添加不同形态氮(NH_(4)^(+)-N和NO_(3)^(-)-N),对其养分元素和生长状况的变化进行研究。结果表明,AMF显著提高了杉木的苗高和生物量,促进了杉木对N、P、K、Ca、Mg、Fe和Na的吸收,AMF对微量元素Fe、Na的促进作用总体上要强于大量元素K、Ca。与NO_(3)^(-)-N相比,AMF显著提高了NH_(4)^(+)-N处理杉木的生物量、总C和N、Ca、Mg、Mn含量,而且这种显著性在叶中普遍高于根和茎。接种AMF可以促进杉木幼苗的生长和对养分元素的吸收,且添加NH_(4)^(+)-N处理的促进作用要强于NO_(3)^(-)-N。
In order to understand the effects of arbuscular mycorrhizal fungi(AMF)and addition different forms of nitrogen on the growth and nutrient uptake of Chinese fir(Cunninghamia lanceolata),the seedlings at 1-year-old were inoculated AMF(Glomus mosseae,Gm)and treated with different forms of nitrogen(NH_(4)^(+)-N and NO_(3)^(-)-N),the changes in nutrient elements and growth status were studied.The results showed that AMF increased significantly the seedling height,biomass and the uptake of N,P,K,Ca,Mg,Fe and Na,and the promotion effect of AMF on trace elements of Fe and Na was generally stronger than that of macro elements of K and Ca.Compared with the addition of NO_(3)^(-)-N,the positive effect of AMF on biomass,C,N,Ca,Mg and Mn contents were more significant with the NH_(4)^(+)-N addition.Moreover,the increased magnitude was stronger in leaves than that in root and stem.Therefore,it was suggested that the inoculation of AMF promoted the growth and nutrient uptake of Chinese fir seedlings.Additionally,the positive effects of AMF on growth and nutrient uptake treated with NH_(4)^(+)-N were more prominent than that with NO_(3)^(-)-N.
作者
雷梅
丁驰
甘子莹
丘清燕
LEI Mei;DING Chi;GAN Ziying;QIU Qingyan(Forestry College of Fujian Agriculture and Forestry University,Forest Ecological Stable Isotope Research Center,Fuzhou 350002,China)
出处
《热带亚热带植物学报》
CAS
CSCD
北大核心
2022年第4期518-527,共10页
Journal of Tropical and Subtropical Botany
基金
国家自然科学基金项目(41703066)资助。
关键词
杉木
丛枝菌根真菌
矿质养分
氮添加
生长
Cunninghamia lanceolata
Arbuscular mycorrhizal fungi
Mineral nutrient
N addition
Growth
