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轮叶马先蒿危害现状及防除对策
Authors
于建梅
李凯辉
+4 more
柳妍妍
王鑫
胡玉昆
高国刚
Publication date
1 January 2008
Publisher
Abstract
轮叶马先蒿(Pedicularis myriophylla)在新疆巴音布鲁克高寒草地大面积发生,于2004-2005年5月初对其生物学特性、传播方式、分布面积、群落数量特征等进行了观测和调查,并对其进行分析,以了解害草轮叶马先蒿在巴音布鲁克高寒草地的分布情况及其对畜牧业的危害现状。结果表明:轮叶马先蒿的危害面积已高达4.11×104hm2,5月下旬是其种子萌发最活跃时期,产种量高,种子传播是主要的传播方式。将轮叶马先蒿分布面积分为重度、中度和轻度发生区,且随着危害程度的增加,轮叶马先蒿密度和盖度显著增大,而群落的多样性、均匀度和物种丰富度却逐渐降低。轮叶马先蒿种群的生物量占总生物量的比例逐渐增加,禾本科和杂类草的生物量有降低的趋势。针对当地的群落问题,提出了人工和化学防除,同时应建立合理的草地放牧体系,控制和规定合理的草地载畜量,并与围封、补播、施肥等草地改良措施相结合,有效控制轮叶马先蒿的危害和蔓延,改善当地的生态与环境,使当地群落健康、稳定发展
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016