[1]彭晓邦. 光能竞争对商洛低山丘陵区农林复合系统林下作物生产力的影响[J].西北林学院学报,2012,27(05):70-75.
　PENG Xiao-bang. Impacts of Light Competition on Crop Productivity in Agroforestry Ecosystem in the Hilly Regions in Shangluo[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2012,27(05):70-75.
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 光能竞争对商洛低山丘陵区农林复合系统林下作物生产力的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第27卷
期数:
2012年05期
页码:
70-75
栏目:
出版日期:
2012-09-20

文章信息/Info

Title:
 Impacts of Light Competition on Crop Productivity in Agroforestry Ecosystem in the Hilly Regions in Shangluo
文章编号:
1001-7461(2012)05-0070-06
作者:
 彭晓邦
 (商洛学院 生物医药工程系，陕西 商洛 726000)
Author(s):
 PENG Xiao-bang
 （Department of Biological and Medical Engineering, Shangluo College, Shangluo, Shaanxi 726000, China）
关键词:
 ; 大豆; 桔梗; 光合有效辐射; 光合速率; 生产力
Keywords:
 ; soybean;  balloonflower;  photosynthetic active radiation (PAR);  net photosynthetic rate (Pn);  crop productivity
分类号:
S718.556
文献标志码:
A
摘要:
 农林复合系统是改善商洛低山丘陵区脆弱生态环境、促进该区域经济发展的重要举措。以该区具有代表性的核桃(Juglans regia)-大豆(秦豆8号)和核桃-桔梗(Platycodon grandiflorum)农林复合模式为对象, 研究不同农林复合系统对光能分布、农作物生长、生产的影响。研究结果表明，不同复合模式下，大豆、桔梗的光合有效辐射、光合速率、生物量及产量均有不同程度的下降，且距树行愈近，影响愈大。叶片水势与大豆、桔梗的光合速率、生物量以及产量不相关或负相关。而15~30 cm土壤含水量与大豆的生物量和产量以及桔梗的生物量正相关。但大豆、桔梗的生产量与其光合有效辐射呈显著正相关性，这说明农林复合系统中光能竞争是导致间作大豆、桔梗产量下降的主要原因。

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