Dry Matter Production, Photosynthesis of Flag Leaves and Water Use in Winter Wheat Are Affected by Supplemental Irrigation in the Huang-Huai-Hai Plain of China

PloS One
Jian-Guo ManYong-Li Zhang

Abstract

Winter wheat is threatened by drought in the Huang-Huai-Hai Plain of China, thus, effective water-saving irrigation practices are urgently required to maintain its high winter wheat production. This study was conducted from 2012 to 2014 to determine how supplemental irrigation (SI) affected soil moisture, photosynthesis, and dry matter (DM) production of winter wheat by measuring the moisture in 0-20 cm (W2), 0-40 cm (W3), and 0-60 cm (W4) soil profiles. Rainfed (W0) and local SI practice (W1, irrigation with 60 mm each at jointing and anthesis) treatments were designed as controls. The irrigation amount for W3 was significantly lower than that for W1 and W4 but higher than that for W2. The soil relative water content (SRWC) in 0-40 cm soil profiles at jointing after SI for W3 was significantly lower than that for W1 and W4 but higher than that for W2. W3 exhibited lower SRWC in 100-140 and 60-140 cm soil profiles at anthesis after SI and at maturity, respectively, but higher root length density in 60-100 cm soil profiles than W1, W2 and W4. Compared with W1, W2 and W4, photosynthetic and transpiration rates and stomatal conductance of flag leaves for W3 were significantly greater during grain filling, particularly at the mid a...Continue Reading

References

Oct 5, 2011·Photochemistry and Photobiology·Nahid Niari Khamssi, Abdollah Najaphy
Apr 1, 2009·Plant Science : an International Journal of Experimental Plant Biology·Chunfang ZhengWeixing Cao

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Citations

Aug 29, 2018·Functional & Integrative Genomics·Savannah BeyerMohsen Mohammadi

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