利用沼液种植黑麦草对土壤环境质量的影响  

Effects of Fertilization with Biogas Slurry on Soil Planting Tetragold-Ryegrass

作　　者：王宗寿[1] 

机构地区：[1]福建省南平市畜牧站,福建南平353000

出　　处：《农业环境科学学报》2007年第B03期172-175,共4页Journal of Agro-Environment Science

摘　　要：田间试验利用沼液种植特高黑麦草,探求“猪-沼-草”良性循环模式,每666.7 m2分别施用含氮量折合为0(CK)、60、70、80、90、100 kg的猪场粪便污水处理沼液,比较分析黑麦草种植前后土壤表层N、P、K、有机质和pH值的变化情况。结果表明,在本试验沼液施用量范围内,黑麦草能正常生长;施沼液后速效P和速效K含量增加明显,增幅顺序排列为速效P>速效K>全P>全N>全K>碱解N。为避免因土壤中速效P的过剩,规模养猪场利用沼液种植黑麦草,在黑麦草种植期(210 d)内,沼液施用量应当控制在每666.7 m28 378 kg以内,相当于土地载畜量每666.7 m2承载2.22头猪。A field experiment was conducted with fertilization of biogas slurry on soil planting tetragold -ryegrass, to seek circle model of ＂Pigs - Bioliquid - Forage＂. Each plots of 666.7 mz were applied at doses of biogas slurry from pig manure equivalent to nitrogen contents of 0, 60, 70, 80, 90, and 100 kg, respectively. To evaluate the effects, N, P, K, organic matter and values of pH before and after planting ryegrass were measured. The results indicated that if the application amount of biogas slurry was optimal at this experiment, the ryegrass could grow normally. The contents of available P and K increased obviously after using biogas slurry, with a chronological order： available P 〉 available K 〉 total P 〉 total N 〉 total K 〉 alkali - N. In order to avoid excess soil vailable P, the scale pig farms use biogas slurry to plant ryegrass. In the ryegrass planting period （210 d）, a dosage for applied biogas slurry should be less than 8 378 kg per 666.7 m^2 , which equals to a stocking rate as 2.22 pigs per 666.7 m^2.

关 键 词：沼液 黑麦草 土壤环境质量 

分 类 号：X820.3[环境科学与工程—环境工程]