Effects of Chemical Fertilizer Reduction Substitute with Organic Fertilizer on Soil Functional Microbes and Lemon Yield and Quality

被引：0

作者：

Wang Y.-Y. ^{[1
,2
]}

Xiong Z.-Y. ^{[1
]}

Luo D.-H. ^{[1
]}

Wang Z.-F. ^{[1
]}

Gao M. ^{[1
]}

机构：

[1] College of Resource and Environment, Southwest University, Chongqing

[2] College of Resource, Environment and Engineering, Mianyang Teachers' College, Mianyang

来源：

Huanjing Kexue/Environmental Science | 2023年 / 44卷 / 03期

关键词：

chemical fertilizer reduction; lemon yield; nitrogen and phosphorus functional microbes; quality; rhizosphere soil;

D O I：

10.13227/j.hjkx.202202042

中图分类号：

学科分类号：

摘要：

To clarify the effects of non-rhizosphere/ rhizosphere soil functional microbes (nitrifiers, denitrifiers, and phosphorus-solubilizing microorganisms) on lemon yield and quality, the lemon fruit and non-rhizosphere/ rhizosphere soil were selected as subjects. To explore the correlation between non-rhizosphere/ rhizosphere soil functional microbes and lemon yield and quality under a chemical fertilizer reduction substitute with organic fertilizer, traditional fruit quality determination and multiple molecular techniques were used. The results showed that: ① 30% chemical fertilizer reduction substitute with organic fertilizer increased the nitrification intensity and phosphatase activity but effectively controlled the denitrifying enzyme activity. ② The chemical fertilizer reduction substitute with organic fertilizer significantly decreased the abundances of nitrifiers and nirS/ nirK-harboring denitrifiers and significantly increased the abundances of nosZ-harboring denitrifier and phoD-harboring microorganisms. However, the diversities of functional microbial community structure did not have clear regularity under chemical fertilizer reduction substitute with organic fertilizer. ③ Compared with that under the application of chemical fertilizer and organic fertilizer alone, lemon yield and quality were the highest under the 30% reduction of chemical fertilizer substitute with organic fertilizer. ④ Nitrogen and its related microbes significantly affected lemon yield through internal and external quality. Phosphorus and its related microbes affected lemon yield mainly through internal quality. In addition, the influence factors of non-rhizosphere soil and rhizosphere soil on lemon intrinsic quality were obviously different. Altogether, these results showed that the 30% reduction of chemical fertilizer substitute with organic fertilizer significantly affected soil nitrogen and phosphorus functional microorganisms and further improved lemon yield and quality. © 2023 Science Press. All rights reserved.

引用

页码：1768 / 1779

页数：11

共 68 条

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