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首页> 外文会议>2008世界草地与草原大会论文集 >Morphological changes associated with forage quality in temperate pastures fertilized with nitrogen in autumn
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Morphological changes associated with forage quality in temperate pastures fertilized with nitrogen in autumn

机译：秋季施氮的温带牧草的形态变化与牧草品质相关

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In the humid temperate region of South America, low temperatures of autumn and winter limits grasses growth (Gastal et al., 1992) and the rate of soil organic nitrogen mineralization.In consequence, strategic nitrogen application at this time is an effective tool to reduce the seasonal forage deficit.Growth, morphology, anatomy and nutrient content are related in forage plants (Lin et al., 2001).Nitrogen effects on growth dynamics and its short‐term impact on the sward structure and forage digestibility, change in agreement to species composition, evaluation dates (Duru and Ducrocq, 2002 ) and rest defoliation periods considered.The aim of this study was to examine the modifications of some fractions of the herbage mass related to forage quality of annual and perennial grasses, occurring in the short term as a consequence of 50 kgN/ha applied in autumn.
机译：在南美湿润的温带地区，秋季和冬季的低温限制了草类的生长（Gastal et al。，1992）和土壤有机氮矿化速率，因此，此时的战略性氮肥施用是减少氮肥有效的工具。季节性饲草缺乏。饲草植物的生长，形态，解剖结构和养分含量相关（Lin et al。，2001）。氮对生长动态的影响及其对草皮结构和饲草消化率的短期影响物种组成，评估日期（Duru和Ducrocq，2002年）和其余的落叶期。本研究的目的是检验与一年生和多年生草的饲草质量有关的部分牧草质量变化，这些变化在短期内会发生。由于秋季施用了50千克牛顿/公顷。

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