不同年限覆盖经营对雷竹地下鞭生长的影响

来源 :第十届中国竹业学术大会 | 被引量 : 0次 | 上传用户:diger
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本研究调查了不同覆盖年限下雷竹林地下鞭的分布特征.结果表明,随覆盖年限增加,雷竹地下鞭的数量、重量及长度都是增加的.然而,覆盖经营后,新鞭的数量却是下降的,同时根鞭上浮,50%以上集中于0-10cm.同时,覆盖经营后土壤表层(0-10cm)酸化严重,上浮根鞭则受到严重危害,会加剧雷竹退化.因此,雷竹根鞭上浮是导致连续覆盖经营雷竹林退化的最主要因素,控制雷竹根鞭上浮是保证雷竹可持续覆盖经营的关键.
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