摘要
通过鲜牛粪、牛粪与核桃果枝、牛粪核桃果枝加发酵菌剂三个不同配比的堆肥试验,开展牛粪和核桃果枝的化学特性参数试验;同时,参照土壤力学试验方法,对有机肥发酵各阶段的含水率、电导率、硬度、湿密度、抗剪强度等物理特性参数进行试验研究。试验结果表明,三种堆体有机质质量分数、总氮、总磷和总钾质量分数在堆肥初期都有所下降,随后缓慢上升,最后趋于平稳,分别稳定在32%、39%、40%,6.33%、9.48%、9.53%,0.95%、1.26%、1.29%和1.71%、2.59%、2.48%,添加果枝和菌剂的堆肥营养物质损失最少。三个堆体EC值的变化趋势基本一致,逐步升高,随着CO_(2)、NH_(3)的挥发,EC值开始缓慢下降,三个堆体EC值最终分别稳定在5.44ms/cm、5.94ms/cm、5.54ms/cm。3个堆体的湿密度在堆肥过程中都随着堆肥天数的增加总体呈下降趋势,堆肥结束时,三个堆体湿密度分别是0.71g/cm^(3)、0.65g/cm^(3)、0.45g/cm^(3)。
The chemical properties of cow dung and walnut branches were tested by composting experiments of fresh cow dung,cow dung and walnut branches,cow dung and walnut branches with fermentation agent.At the same time,according to the soil mechanics test method,the physical characteristics parameters such as moisture content,electrical conductivity,hardness,wet density and shear strength of each stage of organic fertilizer fermentation were studied.The results showed that the mass fraction of organic matter,total nitrogen,total phosphorus and total potassium of the three piles decreased at the initial stage of composting,then slowly increased,and finally stabilized at 32%,39%,40%,6.33%,9.48%,9.53%,0.95%,1.26%,1.29%and 1.71%,2.59%,2.48%respectively.The compost with fruit branch and bactericide has the least nutrient loss.The EC values of the three reactors showed the same trend and gradually increased.Then,with the volatilization of CO_(2) and NH_(3),the EC values began to decline slowly.Finally,the EC values of the three reactors stabilized at 5.44ms/cm,5.94ms/cm and 5.54ms/cm,respectively.During the composting process,the wet density of the three piles generally decreased with the increase of composting days.At the end of composting,the wet density of the three piles was 0.71 g/cm^(3),0.65 g/cm^(3) and 0.45 g/cm^(3) respectively.
作者
赵超
安世官
孔令卓
喻晨
马娟
Zhao Chao;An Shiguan;Kong Lingzhuo;Yu Chen;Ma Juan(Research Institute of Agricultural Mechanization,Xinjiang Academy Agricultural Sciences,Urumqi,830091,Xinjiang,China)
出处
《新疆农机化》
2024年第3期30-34,共5页
Xinjiang Agricultural Mechanization
基金
自治区区域协同创新专项(科技援疆计划)项目(2022E02109)。
关键词
牛粪
发酵工艺
理化特性
抗剪强度
Cow dung
Fermentation process
Physicochemical properties
Shear strength
