Physiological changes in soybean (Glycine max) Wuyin9 in response to N and P nutrition

文献类型： 外文期刊

第一作者： Gan, YB

作者： Gan, YB;Stulen, I;van Keulen, H;Kuiper, PJC

作者机构：

关键词： Phosphorus deficiency;Nitrogen;Fertilisation;Biomass;Seed yield;Symbiotic dinitrogen fixation;Biological nitrogen-fixation;N-2;fixation;Phosphorus-deficiency;Nutrient-uptake;Early growth;Plant-populations;Yield response;Root-growth;Assimilation

期刊名称：ANNALS OF APPLIED BIOLOGY （ 影响因子：2.75； 五年影响因子：2.942 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： Phosphor-us deficiency is a very common problem in the acid soil of central China. Previous research has shown that starter N and N topdressing at the flowering stage (RI) increased soybean (Glycine max) yield and N 2 fixation (Gan et al., 1997, 2000). However, there is little information available concerning soybean response to P-fertiliser in soybean production in central China (Gan, 1999). A field experiment was conducted to investigate the response to P (0 kg P ha(-1), 22 kg P ha(-1), 44 kg P ha(-1) before sowing) and N fertiliser application (NI: 0 kg N ha-1, N2: 25 kg N ha(-1) before sowing, N3: N2 + 50 kg N ha(-1) at the V2 stage and N4: N2 + 50 kg N ha(-1) at the RI stage) on growth, yield and N 2 fixation of soybean. Both N and P fertiliser increased growth and seed yield of soybean (P < 0.01). Application of basal P fertiliser at 22 kg P ha(-1) or 44 kg P ha(-1) increased total N accumulation by 11% and 10% (P < 0.01) and seed yield by 12% and 13% (P < 0.01), respectively, compared to the zero P treatment. Although application of starter N at 25 kg N ha(-1) had no positive effect on seed yield at any P level (P > 0.05), an application of a topdressing of 50 kg N ha(-1) at the V2 or RI stage increased total N accumulation by 11% and 14% (P < 0.01) and seed yield by 16% and 21% (P < 0.01), respectively, compared to the zero N treatment.

分类号： Q

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