Acta Agriculturae Boreali-Sinica ›› 2024, Vol. 39 ›› Issue (S1): 167-174. doi: 10.7668/hbnxb.20193667

Special Issue: Soil fertilizer Animal husbandry

• Resources & Environment·Plant Protection • Previous Articles     Next Articles

Study on the Control Effect of Compound Additives on Nitrogen Loss in Cow Manure and Straw Compost

ZHAO Ouya1, WANG Xueqing1, XU Wanqiang2, HOU Limin1, SUN Shiyou1, RU Shuhua1, XIAO Guangmin1, WANG Ce1, LIU Lei1, DONG Jingxiang2   

  1. 1 Institute of Agricultural Resources and Environment,Hebei Academy of Agriculture and Forestry Science,Hebei Fertilizer Technology Innovation Center,Shijiazhuang 050051,China
    2 Hebei Academy of Agriculture and Forestry Science,Shijiazhuang 050031,China
  • Received:2024-05-26 Published:2025-01-24

Abstract:

In order to effectively control the nitrogen loss during the livestock manure composting process,a reactor was used for a simulated composting test.Fresh cattle manure as raw material,and maize straw as assist material,to investigate the effects of different clay minerals and chemical substances compound additives on nitrogen loss,nitrogen morphological transformation law and physicochemical properties during the cow manure composting process.The results showed that the compound additives were no impact on the decay process of the material.The index of seed germination rate and pH meets the standard requirements of organic fertilizer(NY525-2002).Adding clay minerals of vermiculite or bentonite,total emission of ammonia decreased by 21.83% and 14.22% than CK,respectively.While,the combination of clay mineral+acid additive could further reduce the ammonia emission.Vermiculite+calcium perphosphate(ZK+CaP)was the best treatment,the second was vermiculite+calcium dihydrogen phosphate combination,total emission of ammonia significantly decreased by 28.47% and 21.18% than single vermiculite treatment.Results of the correlation analysis showed linear correlations were found between pH and total nitrogen content(y=52.97x-351.77,r=0.83),in the pH range of 7.0-8.0.The total ammonia emission was reduced by 5.30 g/kg,because the pH decreased by 0.1 units in a certain range.Total nitrogen content increased by 6-14 percentage points compared with CK.So clay minerals were combined with calcium dihydrogen phosphate,wood acetate and calcium perphosphate,which could reduce the pH effectively,further reduce the ammonia emissions,increase the nitrogen content,and realize the effect of nitrogen preservation and fertilizer increase in the process of cow manure composting,and the combination of vermiculite+calcium perphosphate was the best treatment.

Key words: Cow dung, Compost, Compound additive, Ammonia emission, Nitrogen loss

Cite this article

ZHAO Ouya, WANG Xueqing, XU Wanqiang, HOU Limin, SUN Shiyou, RU Shuhua, XIAO Guangmin, WANG Ce, LIU Lei, DONG Jingxiang. Study on the Control Effect of Compound Additives on Nitrogen Loss in Cow Manure and Straw Compost[J]. Acta Agriculturae Boreali-Sinica, 2024, 39(S1): 167-174. doi: 10.7668/hbnxb.20193667.

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