To solve the problem of lack of water in arid areas and barren soil in the process of ecological restoration, the growth and drought resistance of Sainfoin （Onobrychis vidifolia Scop.） was studied by inoculation of ...To solve the problem of lack of water in arid areas and barren soil in the process of ecological restoration, the growth and drought resistance of Sainfoin （Onobrychis vidifolia Scop.） was studied by inoculation of AMF （arbuscular rnycorrhizal fungi）, under drought stress. The results show that the inoculation of AMF can significantly improve the growth and mycorrhizal infection rate of Sainfoin and accelerate the absorption of water and nutrients by the roots compared with uninoculated plants. On the 40th day under drought stress, the relative water content, total nitrogen and total phosphorus content of the leaves of inoculated plants increased by 7.27%, 4.21% and 2.40%, respectively, the osmotic adjustment property in plant cells was improved, the protective enzyme system was improved and membrane lipid peroxida- tion was reduced. The inoculation of AMF can slow down the damage from drought, improve the drought resistance of Sainfoin, and will be of great significance to the ecologic restoration in arid areas.展开更多
A series of pot experiments and field trials were carried out to evaluate the effects of arbuscular mycor- rhizal fungi （AMF） on activities of soil enzymes and carbon sequestration capacity in reclaimed mine soil. A...A series of pot experiments and field trials were carried out to evaluate the effects of arbuscular mycor- rhizal fungi （AMF） on activities of soil enzymes and carbon sequestration capacity in reclaimed mine soil. A complex substrate of coal gangue, fly ash and sludge was used as reclaimed mine soil, and ryegrass was planted with AMF inoculation to construct a plant-complex substrate-microbe ecological restoration sys- tem. The changes to the soil organic carbon （SOC）, activities of soil enzymes and glomalin-related soil protein （GRSP） were measured and the effects of AMF on activities of soil enzymes and carbon sequestra- tion capacity （n reclaimed mine soil were analyzed. The results show that the contents of GRSP （total glo- malin （TG） and easily extractable glomalin （EEG））, SOC and activities of enzymes increased, and the increments were higher in the AMF inoculation treated plant-complex substrate-microbe ecological res- toration systems than those with no AMF inoculated treatments after 12 months of ryegrass growth. TG, EEG and soil enzyme activity have a significant positive correlation, and the correlative coefficient was 0.427-0.573; SOC and TG, EEG have a significant positive correlation （p 〈 0.01 ）, indicating that AMF plays an important role in carbon sequestration of reclaimed mine soils.展开更多
基金provided by the Science and Technology Major Project of Shanxi Province (No. 20121101008), is gratefully acknowledged
文摘To solve the problem of lack of water in arid areas and barren soil in the process of ecological restoration, the growth and drought resistance of Sainfoin （Onobrychis vidifolia Scop.） was studied by inoculation of AMF （arbuscular rnycorrhizal fungi）, under drought stress. The results show that the inoculation of AMF can significantly improve the growth and mycorrhizal infection rate of Sainfoin and accelerate the absorption of water and nutrients by the roots compared with uninoculated plants. On the 40th day under drought stress, the relative water content, total nitrogen and total phosphorus content of the leaves of inoculated plants increased by 7.27%, 4.21% and 2.40%, respectively, the osmotic adjustment property in plant cells was improved, the protective enzyme system was improved and membrane lipid peroxida- tion was reduced. The inoculation of AMF can slow down the damage from drought, improve the drought resistance of Sainfoin, and will be of great significance to the ecologic restoration in arid areas.
基金supported by the Environmental Science andTechnology Fund of Environmental Protection Department of Jiangsu Province,China (No. 2007024)
文摘A series of pot experiments and field trials were carried out to evaluate the effects of arbuscular mycor- rhizal fungi （AMF） on activities of soil enzymes and carbon sequestration capacity in reclaimed mine soil. A complex substrate of coal gangue, fly ash and sludge was used as reclaimed mine soil, and ryegrass was planted with AMF inoculation to construct a plant-complex substrate-microbe ecological restoration sys- tem. The changes to the soil organic carbon （SOC）, activities of soil enzymes and glomalin-related soil protein （GRSP） were measured and the effects of AMF on activities of soil enzymes and carbon sequestra- tion capacity （n reclaimed mine soil were analyzed. The results show that the contents of GRSP （total glo- malin （TG） and easily extractable glomalin （EEG））, SOC and activities of enzymes increased, and the increments were higher in the AMF inoculation treated plant-complex substrate-microbe ecological res- toration systems than those with no AMF inoculated treatments after 12 months of ryegrass growth. TG, EEG and soil enzyme activity have a significant positive correlation, and the correlative coefficient was 0.427-0.573; SOC and TG, EEG have a significant positive correlation （p 〈 0.01 ）, indicating that AMF plays an important role in carbon sequestration of reclaimed mine soils.
