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拉巴豆在不同土壤上的结瘤效应、饲用品质
引用本文:韩玉竹,张淑霞,时安东,杨成旭,黄建国.拉巴豆在不同土壤上的结瘤效应、饲用品质[J].植物营养与肥料学报,2012,18(4):965-973.
作者姓名:韩玉竹  张淑霞  时安东  杨成旭  黄建国
作者单位:1.西南大学资源环境学院,重庆 400716;西南大学荣昌校区,重庆 4024605. 西南大学资源环境学院
基金项目:国家科技部“973”重点基础研究资助项目,国家科技支撑计划,中央高校基本科研业务费专项资金,西南大学动物营养重点学科建设基金
摘    要:选择重庆市4种具有代表性的土壤(灰棕紫泥两种、红棕紫泥和灰岩黄壤各一种),接种促生根瘤菌,研究了拉巴豆的结瘤性能、生长情况、光合速率、营养品质及矿质养分等。结果表明,在微酸性和酸性灰棕紫泥土壤上,拉巴豆的生长、生理、光合、产量和品质显著优于灰岩黄壤和红棕紫泥。在微酸性灰棕紫泥(pH 6.14)和灰岩黄壤(pH 6.45)上,接种根瘤菌能形成根瘤,但在酸性灰棕紫泥(pH 4.09)和碱性红棕紫泥(pH 7.50)上,形成根瘤极少或不形成根瘤,说明土壤酸碱度过高和过低均抑制根瘤形成。接种根瘤菌形成根瘤之后,不同程度地改善了拉巴豆氮、磷营养,提高了其净光合速率,促进了生长,增加了生物量,改善了品质。拉巴豆生物量,氮、磷吸收量,收获后土壤有效氮、磷含量与根瘤重量呈显著正相关,故根瘤重量可反映根瘤活性。此外,在微酸性灰棕紫泥土壤中,拉巴豆的根瘤数量虽然比灰岩黄壤少53.32%,但根瘤体积较大,根瘤重量为灰岩黄壤上的1.66倍,接种效应总体上优于灰岩黄壤。所以,在重庆市的拉巴豆栽培中,选择微酸性和酸性灰棕紫泥,并接种根瘤菌有益于高产优质。

关 键 词:拉巴豆    土壤    结瘤    饲用品质    养分吸收
收稿时间:2011-11-25

Nodulation effects, feeding quality and nutrient absorption of Dolichos lablab L. in different soils
HAN Yu-zhu,ZHANG Shu-xia,SHI An-dong,YANG Cheng-xu,HUANG Jian-guo.Nodulation effects, feeding quality and nutrient absorption of Dolichos lablab L. in different soils[J].Plant Nutrition and Fertilizer Science,2012,18(4):965-973.
Authors:HAN Yu-zhu  ZHANG Shu-xia  SHI An-dong  YANG Cheng-xu  HUANG Jian-guo
Institution:1.College of Resources and Environment,Southwest University,Chongqing 400716,China;Rongchang Campus,Southwest University,Chongqing 402460,China
Abstract:The influence of rhizobia inoculation on nodulation,growth,photosynthesis,nutrient quality and absorption by Dolichos lablab L. and as well as soil nutrients were conducted in four typical and representative soils which are widely distributed in Chongqing,two grey brown purple soils with pH 4.06 and 6.14,a red brown purple soil with pH 7.50 and a yellow limestone soil with pH 6.45.The results show that the growth,yield and quality of D.lablab in the two grey brown purple soils are better than those in the yellow limestone soil and alkaline red brown purple soil.Rhizobia inoculation could form nodules in the slight acidic grey brown purple soil(pH 6.14) and yellow limestone soil(pH 6.45),could form fewer nodules or no nodules in the acidic grey brown purple soil(pH 4.09) and alkaline red brown purple soil(pH 7.50),which indicates that higher or lower pH values are unfavorable for nodule formation.Nodule formation could improve D.lablab’ s nitrogen and phosphorus nutrition,net photosynthetic rate,promote the growth,and increase biomass and quality to some extent.Positive correlations are obtained between biomass,nitrogen and phosphorus absorptions,and the soil nitrogen and phosphorus and nodule weight after harvesting,indicating the nodule weight might reflect the nodule activity.The nodule number in the slight acidic grey brown purple soil is about 53.32% lower than that in the yellow limestone soil,while the size is larger and the nodule weight is 1.66 time to that in the yellow limestone soil,showing the better inoculation.The selections of slight acidic and acidic grey brown purple soils and rhizobia inoculation could increase the yield and improve the quality of D.lablab in Chongqing.
Keywords:Dolichos lablab L    soil  nodulation  feeding quality  nutrient absorption
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