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- Title
天然增效剂与化学抑制剂复配对小麦 / 玉米轮作 体系产量、氮素利用及氮平衡的影响.
- Authors
李长青; 纪 萌; 马萌萌; 王 硕; 刘 欢; 孙志梅
- Abstract
Urease inhibitors and nitrification inhibitors can enhance nitrogen (N) fertilizer utilization efficiency and reducing N losses through regulating the entire process of urea-N transformation. Common urease or nitrification inhibitors, however, are predominantly chemically synthesized and high cost, with their inhibitory effects being impacted due to soil properties, climatic conditions, and crop systems. In this study, we conducted a field plot experiment using natural synergists humic acid/zeolite, along with chemical nitrification inhibitor dicyandiamide (DCD) and their combination to elucidate the impact of natural synergists combined with chemical inhibitors on annual yield, nitrogen utilization efficiency, soil nitrate-N accumulation and nitrogen balance within the wheat/maize rotation system. The treatments included no nitrogen fertilizer application (CK), single application of urea (N), urea +DCD (ND), urea + humic acid (NH), urea + zeolite (NP), urea + urease inhibitor N-butylthiophosphoric triamide + DCD (NUD), urea + humic acid + DCD (NHD), and urea + zeolite + DCD (NPD). The results indicated that, relative to treatment NH or NP, the integration of humic acid or zeolite with DCD (NHD and NPD) significantly increased maize yield (11268 and 11397 kg·hm-2) and total annual yield (20494 and 20582 kg·hm-2), reaching levels comparable to those of combined chemical urease and nitrification inhibitors (NUD). Notably, the NHD and NPD treatments displayed a significantly higher nitrogen utilization efficiency and lower soil nitrate-N accumulation in 80-100 cm soil layer across all seasons relative to the N treatment, which had no significant difference compared to the NUD treatment. Furthermore, a decline in soil nitrogen surplus by 10.7% and 13.9% was observed when comparing the NHD and NPD treatments with the NH and NP treatments, respectively. These findings suggested that combined humic acid or zeolite and chemical nitrification inhibitors could effectively enhance crop yield and nitrogen utilization efficiency and meet the requirements of the green and environmental preservation of modern agriculture.
- Subjects
NITRIFICATION inhibitors; NITROGEN fertilizers; CHEMICAL inhibitors; HUMIC acid; FERTILIZER application; ZEOLITES; UREA as fertilizer
- Publication
Yingyong Shengtai Xuebao, 2023, Vol 34, Issue 9, p2391
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202309.012