干旱地区农业研究2017，Vol.35Issue(4)：173-178,184,7.DOI:10.7606/j.issn.1000-7601.2017.04.26
陕北南泥湾湿地农田养分及AM真菌多样性
Farmland nutrient and biodiversity of AM fungi in Nanniwan wetland in Northern Shaanxi
摘要
Abstract
Wetland is invaluable natural resource,especially in Northern Shaanxi known as serious water loss and soil erosion areas of the loess plateau.Soil samples from seven agrotypes were selected and collected in Nanniwan wetland in Northern Shaanxi,China,aiming to research farmland nutrient concentration and biodiversity of Arbuscular mycorrhiza fungi,and thereby presenting suggestions for local agriculture development.The soil samples were collected from a depth of 30 cm into 3 sections,i.e.0 ～ 10,10 ～ 20 cm and 20 ～ 30 cm in the different farmlands in 2015.The spore density and biodiversity of AM fungi were measured.The result showed that at the 0 ～ 30 cm soil layer,the concentration of organic matter ranged from 7.54 g· kg-1 to 17.23 g· kg-1,organic matter in vegetable site was significantly higher than that in other layers.The concentration of available nitrogen ranged from 12.01 mg· kg-1 to 27.10 mg· kg-1.The concentration of available phosphorus ranged from 3.08 mg· kg-1 to 9.67 mg· kg-1,and the lowest value was detected in soil sample of Picea asperata.The concentration of available potassium ranged from 98.61 mg· kg-1 to 152.51 mg· kg-1.10 AM fungi taxa in three genera were isolated and identified,of which 60％ belonged to the genus Glomus,30％ to Acaulospora,and 10％ to Scutellospora.The most abundance of AM fungi was found in the forest,second most in the field of Picea asperata,and the lowest in paddy field.The spore density showed significant differences among sites,with an order of forest soil (2.24·g-1),Picea asperata soil (2.18·g-1),millet soil (1.46·g-1),maize soil (1.31·g-1),vegetable soil (0.76· g-1),paddy soil (0.73· g-1),and soybean soil (0.68· g-1).关键词
湿地/农田养分/AM真菌Key words
wetland/farmland nutrient/AM fungi分类
农业科技引用本文复制引用
山宝琴,乔依依,刘国豪,向梅..陕北南泥湾湿地农田养分及AM真菌多样性[J].干旱地区农业研究,2017,35(4):173-178,184,7.基金项目
延安市科技创新团队项目(2015CHTD-04) （2015CHTD-04）
延安市科技项目(2014KS-03) （2014KS-03）
延安大学引导项目(YD2015-14) （YD2015-14）
国家级大学生创新项目(201510719260) （201510719260）
