ZHANG Maoming.Effects of Nitrogen Fertilizer Treatments on Leaf Traits and Dry Matter Accumulation of Soybean Henong 134[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(07):25-29.[doi:10.11942/j.issn1002-2767.2023.07.0025]
氮肥对大豆合农134叶部性状及干物质积累的影响
- Title:
- Effects of Nitrogen Fertilizer Treatments on Leaf Traits and Dry Matter Accumulation of Soybean Henong 134
- 文章编号:
- 5
- 文献标志码:
- A
- 摘要:
- 为明确合理的氮肥施用时期和施用比例,以大豆合农134为试验材料,设置纯氮不同施用时期和比例处理方式,研究分期、不同方式施用氮肥对始花期(R1)、盛花期(R2)、盛荚期(R4)、盛粒期(R6)大豆叶部性状及干物质积累的影响。结果表明,最佳的施氮方式为处理2[种肥 2.0 kg·(667 m2)-1、始花期追施 1.0 kg·(667 m2)-1、始花期喷施 1.0 kg·(667 m2)-1、盛花期不施],其次为处理3[种肥 2.0 kg·(667 m2)-1、始花期追施1.0 kg·(667 m2)-1、始花期喷施 0.5 kg·(667 m2)-1、盛花期喷施 0.5 kg·(667 m2)-1]。处理2与处理3在盛荚期(R4)、盛粒期(R6)的叶面积指数分别为3.75,3.60与2.75,2.65;光合速率分别为22.5,23.1 μmol CO2·m-2·s-1与15.9,16.3 μmol CO2·m-2·s-1;干物质积累分别为35.2,34.9 g·株-1与57.8,56.9 g·株-1。这两个处理的叶部性状及干物质积累在大豆生长的关键期盛荚期(R4)、盛粒期(R6)优于其他处理。该处理方式能够有效提高氮肥的利用效率,利于大豆形成良好的叶部性状和干物质的积累。
- Abstract:
- In order to clarify the reasonable period and proportion of nitrogen fertilizer application, soybean Henong 134 was used as the experimental material, and different nitrogen fertilizer treatment methods were set up to study the effects of different stages and methods of nitrogen fertilizer application on the leaf traits and dry matter accumulation of large beans during the initial flowering period (R1), full flowering period (R2), full pod period (R4), and full grain period (R6). The results showed that the optimal nitrogen application method was treatment 2[N 2.0 kg·(667 m2)-1 of seed fertilizer, N 1.0 kg·(667 m2)-1 of topdressing at the beginning of flowering, N 1.0 kg·(667 m2)-1 of spraying at the beginning of flowering, and no application at the peak of flowering], followed by treatment 3 (N 2.0 kg·(667 m2)-1 of seed fertilizer, N 1.0 kg·(667 m2)-1 of topdressing at the beginning of flowering, N 0.5 kg·(667 m2)-1 of spraying at the beginning of flowering, and N 0.5 kg·(667 m2)-1 of spraying at the peak of flowering]. The leaf area indices of treatment 2 and treatment 3 during the full pod stage (R4) and full grain stage (R6) were 3.75, 3.60 and 2.75, 2.65, respectively; The photosynthetic rates are 22.5 and 23.1 μmol CO2·m-2·s-1 and 15.9, 16.3 μmol CO2·m-2·s-1 respectively; The accumulation of dry matter was 35.2, 34.9 g per plant, and 57.8,56.9 g per plant, respectively. The leaf traits and dry matter accumulation of these two treatments were superior to other treatments during the critical stages of soybean growth, such as full pod stage (R4) and full grain stage (R6). This treatment method effectively improves the utilization efficiency of nitrogen fertilizer, which is conducive to the formation of good leaf traits and dry matter accumulation in soybeans.
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备注/Memo
收稿日期:2023-01-27