摘要
以山西省古交屯兰煤矿矸石山复垦区土壤为研究对象,田间试验采用裂区设计布置,研究覆土40,60 cm以及不同施肥措施（无机肥、有机肥、有机加无机肥、不施肥（对照））对矸石覆土区土壤水分和大豆生物量的影响。结果表明,覆土厚度显著影响土壤0~20,20~40 cm土层的水分含量,提高了土壤的保水和蓄水能力;相对于施肥措施,覆土厚度对土壤水分和大豆生长的影响更显著,即覆土厚度显著影响大豆的根瘤质量和地上及地下部生物量,覆土60 cm区均高于40 cm;施肥措施则以单施有机肥和有机加无机肥处理对土壤水分和大豆生长的影响要优于无机肥和不施肥处理（对照）。
The effects of different soil replacement depth and fertilizer application on soybean biomass and soil moisture content were investigated in reclaimed coal waste piles at Tunlan mine, Gujiao, Shanxi province. The field experiment was set up as a 4 x 2 split plot design with two factors, which were depth of soil replacement （40, 60 cm） as the main plot and fertilizer application （inorganic fer- tilizer, organic fertilizer, combined application of organic and inorganic fertilizer, non-fertiliar （control）） as the sub-plot. The results showed that soil moisture contents in the 0-20, 20--40 cm ranges were significantly affected by soil replacement depth, which meant im- proved water retention and storage capacity in the soil. In comparison to fertilizer application measures, the depths of soil replacement had significant influence on the soil moisture content and soybean growth. With the increase of soil replacement depth（40, 60 cm ）, the weight of soybean root nodules, soybean aboveground biomass and underground biomass increased as well. Organic fertilization, in combination either with or without inorganic fertilizer, significantly improved the soil moisture and soybean growth by comparing to inorganic fertiliza- tion or control treatments.
出处
《山西农业科学》
2015年第8期968-971,991,共5页
Journal of Shanxi Agricultural Sciences
基金
国家国际科技合作专项(2011DFR31230)
山西省科技重大专项(20121101009)
山西省农业科学院重点项目(2013zd12)
关键词
覆土厚度
施肥措施
土壤水分
大豆根瘤
生物量
soil replacement depth
fertilizer application
soil moisture content
soybean root nodules
biomass
