Determining the Optimum Level of Soil Olsen Phosphorus and Phosphorus Fertilizer Application for High Phosphorus-Use Efficiency in Zea mays L. in Black Soil
文献类型： 外文期刊
作者： Ibrahim, Khalid 1 ; Wang, Qiong 1 ; Wang, Le 1 ; Zhang, Weiwei 1 ; Peng, Chang 3 ; Zhang, Shuxiang 1 ;
作者机构： 1.Chinese Acad Agr Sci, Natl Engn Lab Improving Qual Arable Land, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China
2.Agr Res Corp ARC, Wad Madani 126, Sudan
3.Northeast Agr Res Ctr China, Jilin Acad Agr Sci, Inst Agr Resources & Environm, Changchun 130033, Peoples R China
关键词： phosphorus; relative yield; phosphorus-use efficiency; Zea mays L
期刊名称：SUSTAINABILITY （ 影响因子：3.251； 五年影响因子：3.473 ）
ISSN：
年卷期： 2021 年 13 卷 11 期
页码：
收录情况： SCI
摘要： Phosphorus is an essential macronutrient, both as a component of several important plant structural compounds and as a catalyst in the conversion of numerous important biochemical reactions in plants. The soil Olsen P (OP) level is an important factor affecting crop production and P-use efficiency (PUE). We tested the effect of six OP levels and P doses on maize yield, where the P doses were 0, 22, 44, 59, 73, and 117 kg P2O5 ha(-1), with three replications, from 2017 to 2019. The response of crop yield to the OP level can be divided into two parts, below 28 mg kg(-1) and above 28 mg kg(-1). The change point between the two parts was determined as the agronomic critical level for maize crops in the study area. The PUE (%) increased with soil OP levels and decreased with P fertilizer application rates. In addition, results for the low P application rate (P2), 22 kg P2O5 ha(-1), showed that PUE significantly increased with an increase in the soil OP level compared with PUE at a low OP level (OP1), 0 kg P2O5 ha(-1). The PUE value increased by 49.5%, 40.1%, and 32.4% at a high OP level (OP6) in 2017, 2018, and 2019, respectively, compared to that at a low OP level (OP1). At the same OP levels, in all three years, the PUE at a high P application rate (P6) decreased significantly, in the range of 62.8% to 78.7%, compared to that at a low P application rate (P2). Under an average deficit of 100 kg ha(-1) P, the OP level of the soil in all three years decreased by 3.9 mg kg(-1) in the treatment without P addition (P1) and increased by 2.4-3.5 mg kg(-1) in the P treatments for each 100 kg ha(-1) P surplus. A phosphorus application rate of 44 kg P2O5 ha(-1) and an OP level of 28 mg kg(-1) are sufficient to obtain an optimum yield, increase the PUE, and reduce environmental hazards in the study area in northeastern China.
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