Effect of cotton straw returning to the field in arid areas on soil physical and chemical properties and cotton yield

doi:10.16178/j.issn.0528-9017.20250131

Abstract

Abstract:

In this study，based on field positioning experiments conducted from 2022 to 2024，we explored the effects of straw returning to the field on the physical and chemical properties of cotton field soil and cotton yield in arid areas. Two treatments，namely straw returning to the field and straw removing from the field，were set up in the experiment in 2023 and 2024，respectively. The changes in soil bulk density，aggregate structure，nutrient content and cotton yield were analyzed. The results showed that straw returning to the field improved the physical structure of the soil and increased the stability of soil aggregates. Among them，the proportion of silt and clay aggregates with particle size <0.053 mm increased significantly（p<0.05）by 18.08 percentage points in 2024. Meanwhile，straw returning to the field（2024）significantly increased the contents of total nitrogen，total potassium，organic matter，alkali-hydrolysis nitrogen，and available phosphorus in the soil. In addition，the yield of cotton under the treatment of straw returning to the field was significantly increased by 10% to 11% compared with that under the treatment of straw removing from the field. The study provided a scientific basis for the sustainable development of cotton cultivation in arid areas，and also indicated that the technology of straw returning to the field had application value in improving soil quality and increasing crop yield.

Key words: straw returning to the field, arid area, soil physical and chemical property, cotton yield

CLC Number:

S562

LIU Yingchun, ZHONG Dongdong, SHEN Chao, WANG Xiaoyan, LI Yonggang, LIU Shangmin, DONG Hegan. Effect of cotton straw returning to the field in arid areas on soil physical and chemical properties and cotton yield[J]. Journal of Zhejiang Agricultural Sciences, 2026, 67(4): 1006-1011.

Figures/Tables 5

Fig.1 Basic physical and chemical properties of cotton field soil under different treatments

Fig.2 Proportion of soil aggregate components in cotton fields under different treatments

Fig.3 Total nutrients contents in cotton field soil under different treatments

Fig.4 Contents of available nutrients in cotton field soil under different treatments

Fig.5 Cotton yield under different treatments

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