ZHANG Yun-hong,HE Ai-ling,YAO Jian,et al.Studies on the Effects of Combined Application of Alginate-derived Oligosaccharides Synergistic Urea and Organic Manures in Soybean[J].Soybean Science,2018,37(04):570-577.[doi:10.11861/j.issn.1000-9841.2018.04.0570]
海藻寡糖增效尿素与有机肥在大豆上的配合施用效果研究
- Title:
- Studies on the Effects of Combined Application of Alginate-derived Oligosaccharides Synergistic Urea and Organic Manures in Soybean
- Keywords:
- Soybean[Glycine max(L.) Merr]; Alginate-derived oligosaccharides (ADO) synergistic urea; Organic manure; Photosynthetic characteristics; Yield; Nitrogen utilization efficiency
- 文献标志码:
- A
- 摘要:
- 为提高氮肥利用效率,实现大豆节约化生产,采用盆栽试验,研究了海藻寡糖增效尿素配施4种有机肥(精致有机肥、腐殖酸有机肥、海藻有机肥和炭基肥)对大豆光合特性、产量及氮肥利用效率的影响。结果表明:和普通尿素相比,同等施氮量条件下,海藻寡糖增效尿素处理可提高大豆生育前期功能叶片SPAD值和净光合速率,总干物质累积量及产量分别显著增加22.5%和9.7%,根瘤数、氮素累积量及利用效率也显著高于普通尿素处理;80%施氮量处理,单株氮素累积量较全量处理显著下降7.3%,但产量、氮素利用效率和氮素干物质生产效率均显著增加,增幅分别为5.3%、12.6%和5.4%。此外,80%施氮量条件下,海藻寡糖增效尿素和4种有机肥配施的大豆主茎节数、单株总荚数和根瘤数均显著高于单施海藻寡糖增效肥;与腐殖酸有机肥配施还可提高籽粒和荚皮干物质所占比率,降低秸秆所占比率,提高其产量3.6%;与海藻肥配施可提高大豆开花期净光合速率、根瘤数和氮素利用效率;与炭基肥配施可提高生育前期功能叶片SPAD值和净光合速率,促进干物质及氮素积累。综合而言,本试验条件下,海藻寡糖增效尿素与腐殖酸有机肥和炭基肥配施对大豆的节肥增产效果较好。
- Abstract:
- In order to improve nitrogen use efficiency and achieve economical production of soybeans, pot experiment was carried out to study the effects of combined application of alginate-derived oligosaccharides(ADO) synergistic urea and different organic fertilizer(exquisite organic fertilizer, humic acid fertilizer, seaweed granular fertilizer and biochar) on photosynthetic characteristics, yield and nitrogen (N) utilization efficiency of soybean. The results showed that compared with common urea, ADO synergistic urea raised the SPAD value and net photosynthetic rate(Pn) of functional leaves under the same N level, and total dry matter accumulation and yield were also significantly increased by 22.5% and 9.7%, respectively. Moreover, root nodule number, N accumulation and utilization efficiency were significantly higher than those of common urea treatment. N accumulation of 80% N level treatment was significantly decreased by 7.3% compared to that of full N level treatment, but its yield, N utilization efficiency and dry matter produce efficiency were significantly increased by 5.3%, 12.6% and 5.4%, respectively. In addition, under the condition of 80% N level, the numbers of nodes on main stem, total pods and root nodules per plant of the treatments of combined application of ADO synergistic urea and four organic manures were significantly higher than those of the only ADO synergized urea treatment, Moreover, the combined application of ADO synergistic urea and humic acid fertilizer raised the proportion of grain and pod shell and reduced the proportion of stalk, thereby increased the yield by 3.6%. The combined application of ADO synergistic urea and seaweed granular fertilizer raised Pn at flowering stage, root nodule number and N utilization efficiency. The combined application of ADO synergistic urea and biochar raised the SPAD value and Pn of functional leaves at early growth period, and promoted the accumulation of dry matter and N. Overall, the combined application of ADO synergistic and humic acid fertilizer or biochar had better yield and fertilizer-saving effects in soybean under the condition of experiment.
参考文献/References:
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备注/Memo
收稿日期:2018-03-06