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Effects of Different Salt Stress on Physiological Growth and Yield of Drip Irrigation Cotton (Gossypium hirsutum L.)


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Abstract

This study adopted the method of barrel planting to artificially set the salt content of six different soils (CK:1.5 g kg-1, T1:3.0 g kg-1, T2:4.0 g kg-1, T3:5.3 g kg-1, T4:6.2 g kg-1, T5:7.3 g kg-1) to study the effects of different degrees of mild salt stress on photosynthetic physiology, growth index and yield of cotton under drip irrigation. The results showed that with the increasing salt stress and the prolongation of stress time, the photosynthetic physiological indexes of cotton showed a downward trend (P<0.01), and the plant height and leaf area were significantly affected by salt stress in the early growth stage. Furthermore, the comprehensive analysis showed that compared with moderate and severe salt stress, stomatal limitation was the cause of photosynthetic rate decline in cotton under mild salt stress at early growth stage, while non-stomatal limitation was at late growth stage. Photosynthetic parameters were closely related to the degree of salt stress, and cotton yield showed a good correlation with photosynthetic indicators. This experiment could provide a theoretical basis for the cultivation and management of cotton in mild saline-alkali land in Xinjiang.


Keywords


Pages

Total Pages: 10

DOI
10.31209/2020.100000163


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Published

Online Article

JOURNAL INFORMATION


ISSN PRINT: 1079-8587
ISSN ONLINE: 2326-005X
DOI PREFIX: 10.31209
PREVIOUS DOI PREFIX (with T&F): 10.1080/10798587
InCites Journal IMPACT FACTOR (JIF) Data

2018  0.790
2017  0.652
2016  0.644

Scimago Journal and Country Rank (SJR) Data

TWO YEAR CITATIONS PER DOCUMENT:
2018  0.993
2017  0.655
2016  0.660
SJR: "The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric."





Journal: 1995-Present


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