| The effect of different dosage of phosphorous fertilizer application on growth and yield of soybean in a Mollisol in Northeast China |
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| DOI：10.7606/j.issn.1000-7601.2018.05.18 |
| Key Words: phosphorous fertilizer fertilizationdosage soybean nodule yield mollisol in northeast china |
| Author Name | Affiliation | | Zhao Jia-Xu | College of Resource and Environment Northeast Agricultural University, Harbin, Heilongjiang 150030 | | Zhang Yi-He | College of Resource and Environment Northeast Agricultural University, Harbin, Heilongjiang 150030 | | Han Xiao-Zeng | Northeast Institute of Geography and Agroecology Chinese Academy of Sciences, Harbin, Heilongjiang 150081 | | Zou Wen-Xiu | Northeast Institute of Geography and Agroecology Chinese Academy of Sciences, Harbin, Heilongjiang 150081 | | Lu Xin-Chun | Northeast Institute of Geography and Agroecology Chinese Academy of Sciences, Harbin, Heilongjiang 150081 | | Yan Jun | Northeast Institute of Geography and Agroecology Chinese Academy of Sciences, Harbin, Heilongjiang 150081 | | Ding Jiao | Yichun Municipal Environmental Protection Bureau, Yichun, Heilongjiang 153000 |
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| Abstract: |
| The effect of P fertilizer dosage, including no fertilizer (CK), low P treatment (25.58 P2O5 kg·hm-2, N1P1K), medium P treatment (51.75 P2O5 kg·hm-2, N1P2K) and High P treatment (77.65 P2O5 kg·hm-2, N1P3K) on growth, nodulation and yield of soybean was investigated based on a long-term experiment in Hailun Ecological Experimental Station, Chinese Academy of Sciences. The results showed that the effect of different treatment on plant high and biomass of soybean ranked as N1P3K>N1P2K>N1P1K>CK with exception of plant height in seed filling stage. The nodule number and nodule weight of seedling stage under N1P3K treatment had increased significantly,by 56.7%~152.8% and 87.4%~463.1% respectively, compared with CK, N1P1K and N1P2K treatments, Nitrogenase activity under N1P2K and N1P3K treatments had increased by 74.0% and 94.0% compared with CK. Pod number per plant and seed number per plant both were increasing with the increased dosage of P fertilizer application. No significant difference was observed in 100[CD*2]seed weight and yield under N1P2K and N1P3K treatments, although P fertilizer application had increased 100-seed weight and yield of soybean, indicating that overdose of P fertilizer application has no significant effect on yield increase. Therefore, recommended amount of P fertilizer application was 51.25 P2O5 kg·hm-2 in a Mollisol in Northeast China in consideration of factors such as product cost, soybean yield and so on. |
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