文献类型： 外文期刊

第一作者： Yang, Guoying

作者： Yang, Guoying;Liu, Hongjiang;Zhang, Yuefang;Chen, Liugen;Zheng, Jianchu;Guo, Zhi;Sheng, Jing;Yang, Guoying;Liu, Hongjiang;Zhang, Yuefang;Chen, Liugen;Zheng, Jianchu;Guo, Zhi;Sheng, Jing;Ji, Hongting

作者机构：

关键词： Organic-inorganic compound fertilizer; Crop productivity; Nutrient use efficiency; Economic benefit; Principal component analysis; Sustainability; Slow-release fertilizer

期刊名称：PEERJ （ 影响因子：2.984； 五年影响因子：3.369 ）

ISSN： 2167-8359

年卷期： 2020 年 8 卷

页码：

收录情况： SCI

摘要： Background: Integrating a chemical nitrogen (N) fertilizer with an organic fertilizer and using slow-release mechanism are important N management strategies to increase the N utilization efficiency (NUE) and grain yield of rice. However, the performances of both N management strategies on the productivity, the nutrient absorption and utilization efficiency, and the economic benefits of rice have not yet been comprehensively evaluated. Methods: A 2-year field experiment was conducted with seven N management strategies without fertilizer (control), 100% conventional N fertilizer (conventional compound fertilizer and urea) (N-100), 75% conventional N fertilizer with 25% organic-inorganic compound fertilizer (N-75 +OICF25), 50% conventional N fertilizer with 50% organic-inorganic compound fertilizer (N-50 +OICF50), 100% organic-inorganic compound fertilizer (OICF100), slow-release compound fertilizer with urea (SRCF+U), compound fertilizer with sulfur-coated urea (CF+SCU). The responses of the productivity, the nutrient absorption and utilization efficiency, and the economic benefits of rice to the different N management strategies were evaluated. Results: CF+SCU performed comparably or better than N-100, judging by the grain yield (GY), the N, phosphate (P) and potassium (K) agronomic efficiency (NAE, PAE and KAE), and the apparent N, P and K recovery efficiency (ANRE, APRE and AKRE). SRCF+U significantly increased the GY by an average of 7.7%, the NAE and the ANRE by 23.8 and 26.7%, the PAE and the APRE by 90.6 and 109.3%, and the KAE and the AKRE by 74.2 and 57.7%. The higher GY and nutrient utilization efficiency when using SRCF+U were attributed to the higher total biomass and total nutrient absorption. N-75 +OICF25 and N-50 +OICF50 produced a comparable grain yield than N-100, whereas a significant yield reduction was observed when using OICF100. Compared with N-100 , N-75 +OICF25 resulted in a comparable or higher fertilizer use efficiency (0.3 and 4.7% for NAE and ANRE, 0.3 and 3.2% for PAE and APRE, 0.3 and -2.8% for KAE and AKRE). However, the fertilizer use efficiency when using N-50 +OICF50 and OICF100 were lower than with N-100. The highest net return (NR) (5,845.03 yuan ha(-1)) and benefit to cost (B:C) ratio (0.34) were obtained when using SRCF+U. The NR and the B:C ratio when using N-75 +OICF25 were slightly higher than when using N-100. However, N-50 +OICF50 and OICF100 significantly decreased the NR and the B:C ratio compared with N-100 by 14.5 and 12.1% and by 35.1 and 29.0%, respectively. Conclusions: SRCF+U and CF+SCU enhanced the crop productivity, the nutrient uptake and utilization efficiency, and the economic benefits compared with N-100. The comprehensive performance of SRCF+U was better than that of CF-FSCU. N-75 +OICF25 produced almost similar productivity, nutrient uptake and use efficiency compared with N-100. It demonstrated that N-75 +OICF25 stabilized the grain yield production of rice and reduced the input of chemical N fertilizer.

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