LI Can-dong,SUN Hong-li,GUO Tai,et al.Effects of Nitrogen Leaf Application on Chlorophyll Content and Dry Matter Accumulation for Soybean cv. Hefeng 48[J].Soybean Science,2014,33(01):142-144.[doi:10.11861/j.issn.1000-9841.2014.01.0142]
叶面施氮对合丰48叶绿素含量及干物质积累的影响
- Title:
- Effects of Nitrogen Leaf Application on Chlorophyll Content and Dry Matter Accumulation for Soybean cv. Hefeng 48
- 文章编号:
- 1000-9841(2014)01-0142-03
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 以黑龙江省三江平原大豆主栽品种合丰48为试验材料,研究不同时期叶面施氮量对大豆叶片叶绿素含量及干物质积累的影响。结果表明:叶面施氮可以提高叶片叶绿素含量及干物质积累量,V5期叶面施氮有利于叶绿素含量及茎干物质积累量增加,R5期叶面施氮有利于籽粒干物质积累,本试验范围内,以V5期施氮5 kg.hm -2 叶绿素含量最高,为49.8 SPAD;R5期施氮5 kg.hm -2 籽粒干物重最高,为26.38 g。
- Abstract:
- Using Hefeng 48, the popular planted soybean cultivar in Sanjiang Plain, as tested material, nitrogen amount of 4.0 ,4.5,5.0 and 5.5 kg.ha -1 were leaf sprayed at V5, R2 and R5 stage, and the chlorophyll content and dry matter accumulation were determined. Leaf nitrogen application could increase chlorophyll content and dry matter accumulation. Nitrogen applied at V5 promoted chlorophyll content and stem dry matter accumulation, and enhanced seed dry matter accumulation when applied at R5. Highest chlorophyll content (49.8 SPAD)and seed yield(26.38 g per plant) was obtained under 5 kg.ha-1 nitrogen applied at V5 and R5, respectively.
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备注/Memo
基金项目: 黑龙江省青年科学基金(QC2012C121);现代农业产业技术体系(CARS-04-10B)。