保氮剂对水葫芦堆肥进程及氮素损失的影响

发布时间：2018-03-19 04:33

本文选题：水葫芦　切入点：保氮剂　出处：《应用生态学报》2017年04期 　论文类型：期刊论文

【摘要】：为研究保氮剂对水葫芦堆肥进程及氮素损失的影响,以切碎的水葫芦为原料,以硫酸亚铁、腐植酸钠、过磷酸钙按75∶20∶5质量比配制成保氮剂,进行35 d的好氧堆肥试验.试验设置占堆体总质量0%(对照,CK)、1%(PN1)、2%(PN2)、3%(PN3)的保氮剂4个处理,对堆肥过程中堆体理化性质、氮组分含量、氨挥发及氮素损失率进行监测.结果表明:堆肥高温期,保氮剂处理的堆温明显高于CK,堆体含水量则在降温期显著低于CK(P0.05).堆肥完成后,保氮剂处理的全氮、有机氮含量均显著增加,以PN3处理最高,其全氮、有机氮含量分别比CK高16.3%和13.2%;同时,PN1、PN2、PN3处理的氨挥发总量分别比CK低25.9%、31.5%、42.4%,氮素固定率则分别达31.3%、40.7%、72.2%.表明水葫芦堆肥过程中添加保氮剂可加快启动速度、缩短堆肥时间,并能减少氨挥发、氮素损失.总体上,以PN3处理效果最佳.
[Abstract]:In order to study the effect of nitrogen-conserving agent on compost process and nitrogen loss of water hyacinth, a nitrogen-conserving agent was prepared by using chopped water hyacinth as raw material, ferrous sulfate, sodium humate and calcium superphosphate at the mass ratio of 75: 20: 5. The aerobic composting test was carried out for 35 days. The experiment was carried out with four nitrogen preservatives, which accounted for 0% of the total mass of the reactor. The physical and chemical properties of the reactor and the content of nitrogen components in the compost were treated with four nitrogen preservatives. Ammonia volatilization and nitrogen loss rate were monitored. The results showed that the heap temperature of nitrogen-maintaining agent was significantly higher than that of CK in the high temperature period, and the water content of the reactor was significantly lower than that of CKP0.05in the cooling period. The content of organic nitrogen increased significantly, and the total nitrogen content of PN3 treatment was the highest, and the total nitrogen content of PN3 treatment was the highest. The content of organic nitrogen was 16.3% and 13.2% higher than that of CK, and the total ammonia volatilization of PN1PN2PN3 was 25.9% lower than that of CK, respectively, and the nitrogen fixation rate was 31.30.77.72.2%, respectively. The results showed that adding nitrogen-preserving agent in the composting process of water hyacinth could accelerate the start-up speed and shorten the composting time. Ammonia volatilization and nitrogen loss can be reduced. In general, PN3 treatment is the best.
【作者单位】：四川省自然资源科学研究院;
【基金】：四川省科技支撑计划项目(2015SZ0205) 成都市科技惠民技术研发项目(2014-HM01-00171-SF)资助~~
【分类号】：S141.4

【相似文献】