ACTA AGRICULTURAE BOREALI-SINICA ›› 2021, Vol. 36 ›› Issue (3): 142-149. doi: 10.7668/hbnxb.20191883

Special Issue: Wheat Soil fertilizer Hot Article

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

Variation Characteristics of Soil Organic Carbon, Nitrogen and the Stability of Wheat Yield in Fluvo-Aquic Soil under Long-Term Fertilization

ZHANG Keke1, SONG Xiao1, GUO Doudou1, HUANG Chenchen2, YUE Ke1, ZHANG Shuiqing1, HUANG Shaomin1   

  1. 1. Institute of Plant Nutrient, Resources and Environment, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;
    2. School of Agricultural Sciences, Zhengzhou University, Zhengzhou 450006, China
  • Received:2021-02-03 Published:2021-06-28

Abstract: Investigated the effects of long-term different fertilization methods on soil organic carbon and total nitrogen content in fluvo-aquic soil region, which would provide guidance for obtaining high and stable yield of wheat and technology of fertilizing. Based on the long-term experiment, four fertilization treatments were selected including no fertilizer(CK), chemical fertilizer only (NPK), N, P, K fertilizer plus organic manure (MNPK) and N, P, K fertilizer plus maize straw (SNPK), for determination of soil organic carbon, total nitrogen content and wheat yield from 1990 to 2018. The results showed that wheat yield in fertilization treatments showed a increasing trend, and the wheat yield of SNPK and MNPK treatments was generally lower than that of NPK treatment in the first 18 years, and generally higher than that treated with NPK in the last 11 years, which increased by 8.90% and 8.93% respectively. Compared with CK, the stability of yield under NPK, MNPK and SNPK could increased. In fertilization treatment, the yield sustainable index of SNPK treatment was the highest, 0.66. The fitting equation showed that the contribution rate of fertilizer would be decreased by 14.35-19.57 percentage point for every 1 000 kg/ha increase in base yield of farmland. Long-term fertilization could increase soil organic carbon and total nitrogen content, and MNPK treatment increased soil organic carbon content and total nitrogen content the most obviously by 0.518,0.014 g/kg per year respectively. The soil total nitrogen content was positively correlated with soil organic carbon content (R2=0.620). Every 1 g/kg of increased in soil organic carbon content would bring an increase of 0.078 g/kg of total nitrogen content. In summary, fertilization increased wheat yield, yield stability and yield sustainable index. SNPK treatment maintained the best sustainable production capacity in the wheat-maize rotation system. MNPK treatment could effectively increase soil organic carbon content and total nitrogen content. Therefore, applying organic fertilizer and returning straw to field in fluvo-aquic soil area are important measures to improve soil fertility and ensure sustainable utilization.

Key words: Wheat, Long-term fertilizer, Fluvo-aquic soil, Contribution rate of fertilizer, Yield stability, Sustainable index, Organic carbon, Total nitrogen

CLC Number: 

Cite this article

ZHANG Keke, SONG Xiao, GUO Doudou, HUANG Chenchen, YUE Ke, ZHANG Shuiqing, HUANG Shaomin. Variation Characteristics of Soil Organic Carbon, Nitrogen and the Stability of Wheat Yield in Fluvo-Aquic Soil under Long-Term Fertilization[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2021, 36(3): 142-149. doi: 10.7668/hbnxb.20191883.

share this article