摘要
土壤团聚体在调节土壤通气性和土壤微生物活性等方面具有不可替代的作用。研究施用4A沸石对土壤团聚体组成的结果表明:土壤中添加4A沸石经1 a的培养过程后,土壤中大团聚体减少,微团聚体相对增多。与对照组相比,4A沸石施用量为0.5 g/kg和2.0 g/kg的土壤中,>2 000μm粒级团聚体分别减少40.1%和80.0%;而<53μm粒级团聚体分别增加47.6%和1.54倍。随着4A沸石施用量的增多,土壤中大团聚体由91.2%减少到70.4%,微团聚体由8.8%增加到29.2%。
Soil aggregates have irreplaceable functions in adjusting soil permeability and bacteria activity and other aspects. The result of studying the application of 4A zeolite on soil aggregates composition showed that big aggregates decreased, micro aggregates increased relatively in the soil after adding 4A zeolite one day. Compared with the reference, when 4A zeolite applying quantity reached 0.5 g/kg and 2.0 g/kg, 〉2 000 μm particle aggregates respectively decreased 40.1% and 80.0%; yet 〈53 μm particle aggregates respectively increased 47.6% and 1.54 times. With the quantity increasing of 4A zeolite application, big aggregates in the soil decreased from 91.2% to 70.4%, micro aggregates increased from 8.8% to 29.2%.
出处
《农业科技与装备》
2015年第9期11-12,15,共3页
Agricultural Science & Technology and Equipment
