The response of cotton climatic yield in Reclamation Area of the Eighth Division of Xinjiang Production and Construction Corps to thermal change

doi:10.14088/j.cnki.issn0439-8114.2022.10.001

Abstract

Abstract: In order to explore the influence of changes in thermal resources on cotton yield in different development phases in the Reclamation Area of the Eighth Division of Xinjiang Production and Construction Corps, in this study, using cotton yield data, cotton phenological observation data and meteorological data in the Eighth Division, the climatic yield was separated by the polynomial method, and linear regression and linear correlation methods were used. The results showed that the changes of thermal resources in different development phases of cotton were significantly correlated to the climatic yield in Reclamation Area of the Eighth Division of Xinjiang Production and Construction Corps. When the accumulated temperature changed 100 ℃·d in case that the temperature was ≥0 ℃, 6.6% cotton yield was influenced in the sowing-seedling phase, 3.5% cotton yield was influenced in the seedling-blooming phase, 3.9% yield was influenced in the blooming-boll opening phase and 6.2% yield was influenced in the boll opening phase. The thermal index for cotton production in each development phase was that ≥0 ℃ accumulated temperature ≤235 ℃·d in the sowing-seedling phase,≤1 465 ℃·d in the seedling-blooming phase,≤1 620 ℃·d in the blooming-boll opening phase; ≤475 ℃·d in the boll opening phase. In the whole growing season, the cotton reduction index was ≥0 ℃ accumulated temperature ≤3 630 ℃·d and ≥10 ℃ accumulated temperature ≤3 350 ℃·d. These results could provide theoretical reference to improve the technical management level of cotton cultivation and production in Reclamation Area of the Eighth Division of Xinjiang Production and Construction Corps.

Key words: cotton, climatic yield, thermal resources, development phase, Reclamation Area of the Eighth Division of Xinjiang Production and Construction Corps

CLC Number:

S162

XU Hao-yi, YIN Yu-hong, LI Hong-ying, TIAN Miao, WANG Xiao-tian. The response of cotton climatic yield in Reclamation Area of the Eighth Division of Xinjiang Production and Construction Corps to thermal change[J]. HUBEI AGRICULTURAL SCIENCES, 2022, 61(10): 5-9.

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