文献类型： 外文期刊

作者： Yu Xiao-jing ¹ ; Chen Qi ¹ ; Shi Wen-cong ¹ ; Gao Zheng ¹ ; Sun Xiao ¹ ; Dong Jing-jing ¹ ; Li Juan ² ; Wang Heng-tao ³ ; Gao Jian-guo ³ ; Liu Zhi-guang ¹ ; Zhang Min ¹ ;

作者机构： 1.Shandong Agr Univ, Natl Engn Res Ctr Efficient Utilizat Soil & Ferti, Coll Resources & Environm, Coll Life Sci, Tai An 271018, Shandong, Peoples R China

2.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Key Lab Plant Nutr & Fertilizer, Minist Agr & Rural Affairs, Beijing 100081, Peoples R China

3.Shandong Zhongxin Agr Dev Co Ltd, Linshu 276700, Peoples R China

关键词： wheat-maize rotation; Olsen-P; alkaline phosphatase; phosphorus fertilization; calcareous soils

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：4.384； 五年影响因子：4.021 ）

ISSN： 2095-3119

年卷期： 2022 年 21 卷 3 期

页码：

收录情况： SCI

摘要： Mechanisms controlling phosphorus (P) availability and the roles of microorganisms in the efficient utilization of soil Pin the wheat-maize double cropping system are poorly understood. In the present study, we conducted a pot experiment for four consecutive wheat-maize seasons (2016-2018) using calcareous soils with high (30.36 mg kg(-1)) and low (9.78 mg kg(-1)) initial Olsen-P content to evaluate the effects of conventional P fertilizer application to both wheat and maize (Pwm) along with a reduced P fertilizer application only to wheat (Pw). The microbial community structure along with soil P availability parameters and crop yield were determined. The results showed that the Pw treatment reduces the annual P input by 33.3% without affecting the total yield for at least two consecutive years as compared with the Pwm treatment in the high Olsen-P soil. Soil water-soluble P concentrations in the Pw treatment were similar to those in the Pwm treatment at the 12-leaf collar stage when maize requires the most P. Furthermore, the soil P content significantly affected soil microbial communities, especially fungal communities. Meanwhile, the relative abundances of Proteobacteria and alkaline phosphatase (ALP) activity of Pw were significantly higher (by 11.4 and 13.3%) than those of Pwm in soil with high Olsen-P. The microfloral contribution to yield was greater than that of soil P content in soil with high Olsen-P. Relative abundances of Bacillus and Rhizobium were enriched in the Pw treatment compared with the Pwm treatment. Bacillus showed a significant positive correlation with acid phosphatase (ACP) activity, and Rhizobium displayed significant positive correlations with ACP and ALP in soil with high Olsen-P, which may enhance P availability. Our findings suggested that the application of P fertilization only to wheat is practical in high P soils to ensure optimal production in the wheat and maize double cropping system and that the soil P availability and microbial community may collaborate to maintain optimal yield in a wheat-maize double cropping system.