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Barley Straw Combined with Urea and Controlled-Release Nitrogen Fertilizer Improves Lint Yield and Nitrogen Utilization of Field-Seeded Cotton

文献类型: 外文期刊

作者: Yang, Changqin 1 ; Li, Jianan 3 ; Zhang, Guowei 1 ; Shu, Hongmei 1 ; Wang, Xiaojing 1 ; Hu, Wei 4 ; Liu, Ruixian 1 ;

作者机构: 1.Jiangsu Acad Agr Sci, Inst Ind Crops, Nanjing 210014, Peoples R China

2.Minist Agr & Rural Affairs, Key Lab Cotton & Rapeseed, Nanjing 210014, Peoples R China

3.Huaiyin Inst Technol, Coll Life Sci & Food Engn, Huaian 223003, Peoples R China

4.Nanjing Agr Univ, Coll Agr, Nanjing 210095, Peoples R China

关键词: straw management; N-fertilization strategy; field-seeded cotton; lint yield; N-utilization

期刊名称:AGRONOMY-BASEL ( 影响因子:3.949; 五年影响因子:4.117 )

ISSN:

年卷期: 2022 年 12 卷 5 期

页码:

收录情况: SCI

摘要: Straw returning is an important method of improving soil fertility and reducing environmental pollution. Controlled-release nitrogen fertilizer (CRN) is regarded as an effective way to reduce nitrogen (N) loss and increase N-use efficiency and crop yield. In order to determine the combined effects of straw management (straw removal and straw returning) and N-fertilization strategy (CK (no N), urea, CRN, and a mixture of urea and CRN (UC)) on lint yield, N utilization, and soil properties at harvest of field-seeded cotton, field experiments were conducted from 2018 to 2019. The results demonstrated that the lint yield was the highest with a combination of straw returning and UC, increasing by 4.2-46.9% over other combinations. Straw returning combined with UC facilitated biomass-accumulation and N-uptake from squaring to the boll-opening growth stage, contributing to higher N-agronomic-use efficiency and apparent recovery-use efficiency. Moreover, regardless of the straw management, CRN or UC treatment increased the soil microbial N content and sucrase activity at harvest compared to urea or CK treatment. In summary, straw returning combined with UC was beneficial to the lint yield, N utilization, and soil N availability, which might be an optimizing strategy for field-seeded cotton.

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