苜蓿从去叶状态恢复过程中初始碳和氮储备的贡献：刈割高度和剩余叶面积的影响

Contribution of initial C and N reserves in Medicago sativa recovering from defoliation: impact of cutting height and residual leaf area.

作者信息

Meuriot Frédéric, Decau Marie-Laure, Morvan-Bertrand Annette, Prud'Homme Marie-Pascal, Gastal François, Simon Jean-Claude, Volenec Jeffrey J, Avice Jean-Christophe

机构信息

UMR INRA/UCBN 950, Ecophysiologie Végétale, Agronomie and Nutritions NCS Institut de Biologie Fondamentale et Appliquée, Université, 14032 Caen Cedex, France.

UEPF INRA, Unité d'Ecophysiologie des Plantes Fourragères, Domaine du Chêne, Route de Saintes, 86600 Lusignan, France.

出版信息

Funct Plant Biol. 2005 May;32(4):321-334. doi: 10.1071/FP04151.

DOI:10.1071/FP04151

PMID:32689134

Abstract

We studied the effects of stubble carbon / nitrogen (C / N) reserves or residual leaf area (RLA) on the contribution of taproot C / N reserves to shoot regrowth of Medicago sativa L. after cutting. The study assessed the effects of two cutting heights (6 and 15 cm), two RLAs (0 or 100%), and two initial C / N reserve levels (high N or low N) on forage production, nitrogen (N) distribution, and C / N reserve dynamics within stubble and taproot.

摘要

我们研究了茬口碳/氮（C/N）储备或残留叶面积（RLA）对紫花苜蓿主根C/N储备对刈割后地上部再生长贡献的影响。该研究评估了两种刈割高度（6厘米和15厘米）、两种RLA水平（0或100%）以及两种初始C/N储备水平（高氮或低氮）对牧草产量、氮（N）分配以及茬口和主根内C/N储备动态的影响。