海南大学热带作物学院;
以柑橘幼苗为研究对象，采用分室（分生长室与菌丝室）根箱装置，比较了不同水分处理[60%WFPS(Water-filled pore space);80%WFPS]与两种氮肥形态（NH_4~+;NO_3~-）下，丛枝菌根真菌（CK：无菌丝无根系；AMF：有菌丝无根系；RAMF：有菌丝有根系）对土壤氮含量、植株生物量和氮积累的影响.结果表明：水分水平、氮肥形态和丛枝菌根真菌均显著影响土壤氮含量、柑橘幼苗生物量及植株氮积累量；与60%田间持水量相比，80%田间持水量的土壤硝态氮和总有效氮含量分别降低了26.42%和8.28%，柑橘地上部和总生物量分别显著提高了20.66%和8.93%，柑橘地上部和总氮积累量分别提高了13.57%和6.21%；与添加铵态氮相比，添加硝态氮的柑橘地上部和总氮积累量分别提高了12.59%和5.64%，柑橘地上部和总生物量分别提高了15.68%和9.56%；不同水分和氮形态处理下，AMF均能促进柑橘幼苗生长和植株氮积累；与CK处理相比，AMF处理的地上部和总生物量分别提高了18.57%和15.06%，而RAMF处理分别提高了26.60%和25.48%;AMF处理柑橘地上部和总氮积累量分别较CK处理提高了19.49%和12.88%,RAMF处理分别提高了23.10%和20.10%.因此，不同水分和氮形态下，丛枝菌根真菌与柑橘根系共生均能促进柑橘幼苗生长，提高氮素积累能力.
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基本信息:
DOI：10.15886/j.cnki.hdxbzkb.2024.0015
中图分类号:S666
引用信息:
[1]李京晨,王曙光,郭佩佩等.不同持水量和氮肥形态对丛枝菌根真菌调节柑橘幼苗生长和氮积累的影响[J].海南大学学报(自然科学版),2024,42(02):130-137.DOI:10.15886/j.cnki.hdxbzkb.2024.0015.
基金信息:
海南省自然科学基金（320RC497）; 海南大学科研启动基金（KYQD(ZR)1978）