Regeneration Patterns of Caragana Microphyllain Horqin Sandy Land
Regeneration Patterns of Caragana Microphyllain Horqin Sandy Land
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发表时间：
2012
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通讯作者：
Luo Yongming
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作者：
Luo Yongming
小叶锦鸡儿是科尔沁沙地植被恢复的关键物种之一。采用野外调查和室内、室外试验相结合的方法，对不同树龄小叶伪木的再生进行了研究。结果表明：不同树龄的小叶锦鸡儿种子产量和百粒重存在明显差异。土壤中种子密度随时间迅速下降。幼苗在自然条件下几乎不能存活，尽管沙埋提高了种子的发芽率。残根处理后枝条长势良好，若干年后可萌发再生。综上所述，在自然条件下，小叶伪木种子很难实现更新，发芽和人工树桩是研究区小叶伪木有效的更新模式。
Caragana microphyllais one of the key species for vegetation restoration in Horqin sandy land.Using field investigation and indoor and outdoor experiments,the regeneration of C.microphylla with different ages were studied.The results show that there were obvious differences in seed yield and 100-seed weight among C.microphylla with different ages.Seed density in soil decreased quickly with time.Seedlings could hardly survive under natural conditions,although sand burial increased the seed germination rate.The branches grew well after stumping treatment.C.microphyllacould regenerate through sprouting after a few years.In summary,it is difficult to implement seed regeneration for C.microphyllaunder natural conditions,and sprouting and artificial stumping are the effective regeneration patterns for C.microphyllain the study area.