ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (3): 136-142. doi: 10.7668/hbnxb.20190795

Special Issue: Rice Soil fertilizer

• Resource and Environment·Plant Protection • Previous Articles     Next Articles

Effects of Chinese Milk Vetch Coupled with Application of Reduced Chemical Fertilizer on Stability of Rice Yield

ZHANG Chenglan1, Lü Yuhu2, LIU Chunzeng1, LI Benyin1, GUO Xiaoyan2, NIE Liangpeng2, ZHANG Lin2, CAO Weidong3   

  1. 1. Institute of Plant Nutrition, Agriculture Resources and Environment Sciences, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;
    2. Xinyang City Academy of Agricultural Sciences, Xinyang 464000, China;
    3. Institute of Agriculture Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China
  • Received:2019-11-27 Published:2020-06-28

Abstract: In order to clarify the best fertilization method for reducing application of chemical fertilizer, high yield and stable yield of rice, a study based on an 11-year long-term experiment in the rice-growing area of South Henan Province was established. The experiment including five treatments no fertilization(CK), chemical fertilizer(100%F), 22 500 kg/ha Chinese milk vetch+80% chemical fertilizer (G+80%F), 22 500 kg/ha Chinese milk vetch+60% chemical fertilizer (G+60%F) and 22 500 kg/ha Chinese milk vetch+40% chemical fertilizer (G+40%F). The inter-annual variability, coefficient of variation (CV), sustainable yield index (SYI) of rice yield and the characteristics of fertilization treatment, environment and the interaction between them based on the additive main effects and multiplicative (AMMI) model, were analyzed to comprehensively evaluate the effects of long-term application of Chinese milk vetch combined with reduced chemical fertilizer on rice yield stability. Results showed that fertilization significantly increased the annual average yield of rice. Compared with no fertilization, the rice yield of chemical fertilizer and Chinese milk vetch combined with reduced chemical fertilizer treatments increased by 21.26% and 19.55%-23.25%, respectively. The highest average yield of rice was from the treatment of G+60%F. Fertilization reduced the CV of rice yield, and the CV of G+40%F treatment was the lowest, followed by G+60%F treatment. The SYI of Chinese milk vetch combined with reduced chemical fertilizer treatments was higher than that of chemical fertilizer and no fertilization treatments. The AMMI model clearly explained the interactive effects of fertilization treatments across environment and it was a good method to evaluate stability of rice yield under long-term fertilization. The stability parameter was CK > G+80%F > 100%F > G+60%F > G+40%F. Considering the benefits of high yield, stable yield of rice and reducing the usage of chemical fertilizer, we determined that the effect of applying 60% chemical fertilizer combined with 22 500 kg/ha Chinese milk vetch was the best.

Key words: Rice, Chemical fertilizer reduction, Chinese milk vetch, Yield stability, Coefficient of variation, Sustainability index, AMMI model

CLC Number: 

Cite this article

ZHANG Chenglan, Lü Yuhu, LIU Chunzeng, LI Benyin, GUO Xiaoyan, NIE Liangpeng, ZHANG Lin, CAO Weidong. Effects of Chinese Milk Vetch Coupled with Application of Reduced Chemical Fertilizer on Stability of Rice Yield[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(3): 136-142. doi: 10.7668/hbnxb.20190795.

share this article