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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (4): 7-13.doi: 10.11924/j.issn.1000-6850.2014-2423

• 林学 园艺 园林 • 上一篇    下一篇

黄土丘陵区油松根际土化感效应研究

王 仙1,2,魏天兴1,2,朱金兆1,2,赵兴凯1,2,刘海燕1,2   

  1. (1北京林业大学 水土保持与荒漠化防治教育部重点实验室,北京 100083；2山西吉县国家森林生态系统观测研究站,山西吉县 042200）
  • 收稿日期:2014-09-05 修回日期:2015-01-26 接受日期:2014-11-17 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 王仙
  • 基金资助:
    国家生态系统观测研究网络运行服务项目(2013-2014)；“十二五”国家科技支撑计划项目(2011BAD38B06)；林业科学技术推广项目(2014-40)。

Allelopathic Effect of Pinus tabulaeformis Rhizosphere Soil in Loess Hilly Area

Wang Xian1,2, Wei Tianxing1,2, Zhu Jinzhao1,2, Zhao Xingkai1,2, Liu Haiyan1,2   

  1. (1Key Laboratory of Soil and Water Conservation and Desertification Combating, Ministry of Education,Beijing Forestry University, Beijing 100083；2Jixian Forest Ecosystem Observation and Experiment station,China National Ecosystem Research Network, Jixian Shanxi 042200)
  • Received:2014-09-05 Revised:2015-01-26 Accepted:2014-11-17 Online:2015-03-20 Published:2015-03-20

摘要： 通过生物测定法研究油松根际土对不同物种的化感效应，以期为油松林的乔灌草复合提供科学依据。设定油松根际土化感效应研究的质量浓度分别为0.5、1、3、5、7、10 mg/mL，测定提取液对油松、刺槐、侧柏、胡枝子、绣线菊、冰草、紫花苜蓿发芽与生长化感效应。结果显示：在所有研究浓度下，油松根际土对刺槐、紫花苜蓿呈抑制效应，且随浓度的加大抑制效应不断加强；对侧柏起促进作用；油松根际土对油松、胡枝子、绣线菊、冰草的化感效应呈低浓度促进、高浓度抑制。因此，从油松根际土化感效应的角度考虑，在油松林营造乔灌草复合植被时，应优先考虑侧柏，慎重选择刺槐、紫花苜蓿，选择复合胡枝子、绣线菊、冰草时应该注意油松林的间伐以及间作的密度。

关键词: 作物生长模型, 作物生长模型, AquaCrop, 水分驱动模型

Abstract: The research aimed to provide a scientific basis of arbor-shrub-herb compound vegetation construction in Pinus tabulaeformis Carr forest through studying the potential allelopathic effect of Pinus tabulaeformis rhizosphere soil. The potential allelopathic effects of Pinus tabulaeformis rhizosphere soil on germination and growth were investigated with 7 plants (Pinus tabulaeformis, Robinia pseudoacacia Linn., Platycladus orientalis, Lespedeza bicolor Turcz, Spiraea salicifolia L., Agropyron cristatum Gaertn, Medicago sativa L.), and with different concentrations (0.5, 1, 3, 5, 7, 10 mg/mL). The results showed that: Pinus tabulaeformis rhizosphere soil aqueous extract inhibited the growth of Robinia pseudoacacia Linn, Medicago sativa L., and stimulated the growth of Platycladus orientalis at each study concentrations. Low concentration of Pinus tabulaeformis rhizosphere soil aqueous extract promoted effect on Pinus tabulaeformis, Lespedeza bicolor Turcz, Agropyron cristatum Gaertn and Spiraea salicifolia L. At high aqueous extract, the stimulating effects changed into inhibited. As a result, when arbor-shrub-herb compound vegetation in pine forest is constructed, people should give priority to Platycladus orientalis, carefully choose Robinia pseudoacacia Linn and Medicago sativa L.. When people choose Lespedeza bicolor Turcz, Spiraea salicifolia L. and Agropyron cristatum Gaertn, pine forest intermediate cutting and intercropping density should be noted.