| 银合欢落叶层对苗圃生长的森林一农田作物的他感作用(英文) |
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| 作者单位： | Department of Forestry，School of Agriculture and Mineral Sciences，Shahjalal University of Science and Technology，Institute of Forestry and Environmental Sciences，University of Chittagong，Laboratory of Ecology and Systematics，Biology Division，Faculty of Science，University of the Ryukyus |
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| 摘 要： | 利用随机区组试验评估了孟加拉国吉大港大学苗圃内的银合欢落叶对森林作物种白格、黄金檀和农田作物种长豇豆、鹰嘴豆和木豆的他感作用。结果表明,凋落叶诱导抑制作物的萌发和生长,该抑制作用依赖于萃取物浓度、凋落物及受体物种类型。萃取物浓度越高则他感作用越强。受体植物的生长响应随应用的凋落叶而变化。低浓度(10g·m-2)凋落叶对农田作物嫩芽生长有促进作用,而其他浓度的凋落叶则呈现明显的抑制作用,施用的凋落叶浓度越大抑制作用也越大。但是不同处理所表现出的抑制趋势并不均一,根系生长受到的影响大于嫩芽。图3表4参34。
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| 关 键 词： | 植物相克 森林学 抑制效果 落叶 耕种 |
Allelopathic effects of Leucaena leucocephala leaf litter on some forest and agricultural crops grown in nursery |
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| Authors: | Romel Ahmed A T M Rafiqul Hoque Mohammed Kamal Hossain |
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| Institution: | [1]Department of Forestry, School of Agriculture and Mineral Sciences, Shahjalal University of Science and Technology, Sylhet 3114, Bangladesh [2]Institute of Forestry and Environmental Sciences, University of Chittagong, Chittagong 4331, Bangladesh [3]Laboratory of Ecology and Systematics, Biology Division, Faculty of Science, University of the Ryukyus, Okinawa 903-0213, Japan |
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| Abstract: | An experiment was conducted to assess the effect of leaf litter of Leucaena leucocephala on two forest crops Sada koroi (Albizia procera),Ipil ipil (L.leucocephala) and three agricultural crops Falen (Vigna unguiculata),Chickpea (Cicer arietinum) and Arhor (Cajanus cajan) in the nursery of the Institute of Forestry and Environmental Sciences,Chittagong University,Bangladesh,in a Randomized Block Design.Results suggested that leaf litters of L.leucocephala induced inhibitory effects on germination and growth of bioassay.It was also found that the effect depended on concentration of extract and litterfall,type of receptor species.Higher concentration of the materials had the higher effect and vice versa.Growth response of receptor crops varied with the variation of leaf litter application.The study revealed that application of low-dose leaf litter specially litter of 10 g(m-2 had stimulating effect on shoot growth of C.arietinum,V.unguiculata and A.procera.While in all other cases significant inhibitory effect was observed and it was significantly increased with the increase of leaf litter application.However,the trend of inhibition was uneven with treatments.Root growth was found to be more affected than shoot growth. |
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| Keywords: | allelopathy agroforestry choice of species inhibitory effect leaf litters mixed cropping mixed plantation |
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