ACTA AGRICULTURAE BOREALI-SINICA ›› 2019, Vol. 34 ›› Issue (5): 185-191. doi: 10.7668/hbnxb.201751350

Special Issue: Soil fertilizer

• Resource and Environment·Plant Protection • Previous Articles     Next Articles

Effect of Long-term Fertilization on Phosphorus (P) Balance and Critical Value of Soil Olsen-P in Fluvo-aquic Soil of Shandong Province

SUN Cuiping1,3, ZHANG Yingpeng1,2,4, LUO Jiafa1,6, ZHONG Ziwen1,2, SUN Ming1,2,4, LI Yan1,2,4, LIU Zhaohui1,2,4,5, JING Yongping1,2,4, BO Luji1,2,4   

  1. 1. Institute of Agricultural Resources and Environment, Shandong Academy of Agricultural Sciences, Jinan 250100, China;
    2. Key Laboratory of Agro-Environment in Huang-Huai-Hai Plain, Ministry of Agriculture, Jinan 250100, China;
    3. Key Laboratory of Waste Substance Utilization, Ministry of Agriculture, Jinan 250100, China;
    4. Shandong Provincial Key Laboratory of Agricultural Non-Point Source Pollution Control, Jinan 250100, China;
    5. Shandong Academy of Agricultural Sciences, Jinan 250100, China;
    6. Ruakura Research Centre, Ag Research Limited, Hamilton 3240, New Zealand
  • Received:2018-12-27 Published:2019-10-28

Abstract: To reveal the effects of long-term fertilization on P balance and critical Olsen-P value of fluvo-aquic soils in Shandong Province, a split-plot experiment was designed, taking the winter wheat-summer maize rotation as the research object for 33 years. The main treatments included single inorganic fertilizer and organic/inorganic fertilizer combination. The results showed that the P deficit amount of soil was 23.27-29.20 kg/(ha · a) and 12.10-22.27 kg/(ha · a), respectively, for no P application and only manure application. The P surplus amount was 68.34-85.99 kg/(ha · a) and 88.84-107.64 kg/(ha · a), respectively, for single phosphate fertilizer treatment and organic/inorganic phosphate fertilizer combination. The positive response of Olsen-P to P balance was higher in organic/inorganic phosphate fertilizer combination than in single inorganic fertilization. With an average surplus of 100 kg/ha, the Olsen-P increased by 0.76,1.46 mg/kg, respectively, in the two main treatments. The critical Olsen-P value for wheat and maize yield was 12.60,8.90 mg/kg, respectively, for single inorganic fertilization, but there was no obvious correlation between crop yield and Olsen-P in organic/inorganic fertilizer treatment. Under the long-term tillage, the application of phosphate fertilizer and organic fertilizer was needed for no P fertilization and only manure treatment in order to increase the soil phosphorus, but for P fertilization treatment, the phosphate fertilizer amount should be reduced appropriately to regulate the P balance. The amount of phosphorus application could be determined reasonably based on the critical Olsen-P value for crop yield and effective Olsen-P conversion rate.

Key words: Fluvo-aquic soil, Long-term fertilization, Soil available P, P balance, Critical value of soil Olsen-P

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Cite this article

SUN Cuiping, ZHANG Yingpeng, LUO Jiafa, ZHONG Ziwen, SUN Ming, LI Yan, LIU Zhaohui, JING Yongping, BO Luji. Effect of Long-term Fertilization on Phosphorus (P) Balance and Critical Value of Soil Olsen-P in Fluvo-aquic Soil of Shandong Province[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2019, 34(5): 185-191. doi: 10.7668/hbnxb.201751350.

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