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Effects of supplemental irrigation on the accumulation, distribution and transportation of 13C-photosynthate, yield and water use efficiency of winter wheat

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  • Zhang, Hongbo
  • Han, Kun
  • Gu, Shubo
  • Wang, Dong

Abstract

Water resources are increasingly scarce, and droughts are frequent in the Huang-Huai-Hai Plain of China. There is an urgent need for developing water-saving technologies for winter wheat production in this region. Field experiments were carried out in silty loam soil from 2012 to 2014. Based on the same water condition in seeding period and the normal emergence of winter wheat, five supplemental irrigation (SI) regimes differing in the timing of SI were established. Crop development was categorized using the Zadoks scale. T1: no irrigation after emergence; T2: SI at jointing (4th node detectable, Z34); T3: SI at pre-wintering (average daily temperature drops to about 2 ° and the wheat plant basically stops growing) and jointing; T4: SI at jointing and anthesis complete (Z69); T5: SI at pre-wintering, jointing and anthesis complete. The results showed that SI brought the soil water content in the 0–20 cm profile to 100% field capacity at the pre-wintering, jointing and anthesis complete stages of winter wheat, mainly improving the water supply condition in the 0–40 cm soil layer. Compared with no irrigation after emergence, SI at jointing and anthesis complete significantly increased grain yield by increasing the spike number, kernel number and grain weight. SI at the pre-wintering stage can improve grain number and yield under the condition of no SI at anthesis complete (comparing T3 with T2), but had no significant effect on grain yield when SI was supplied at jointing and anthesis complete (comparing T5 with T4), and even worse, the irrigation water use efficiency decreased. The decrease of water supply before anthesis complete significantly reduced the dry matter accumulation and photosynthetic rate at anthesis but promoted the translocation of photosynthates to the plant ear. SI at anthesis complete is advantageous for the assimilation of carbohydrates in the middle and late grain filling stage and for the distribution of those carbohydrates from vegetative organs to grain. These results indicated that SI at jointing and anthesis complete was conducive to coordinating the relationship between photosynthesis and photosynthates retranslocated after anthesis, and may improve the harvest index, grain yield and water use efficiency.

Suggested Citation

  • Zhang, Hongbo & Han, Kun & Gu, Shubo & Wang, Dong, 2019. "Effects of supplemental irrigation on the accumulation, distribution and transportation of 13C-photosynthate, yield and water use efficiency of winter wheat," Agricultural Water Management, Elsevier, vol. 214(C), pages 1-8.
    • Handle: RePEc:eee:agiwat:v:214:y:2019:i:c:p:1-8
    DOI: 10.1016/j.agwat.2018.12.028
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    References listed on IDEAS

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    1. Amer, Abdelmonem Mohamed, 2011. "Effects of water infiltration and storage in cultivated soil on surface irrigation," Agricultural Water Management, Elsevier, vol. 98(5), pages 815-822, March.
    2. Lei Kang & Hongqi Zhang, 2016. "A Comprehensive Study of Agricultural Drought Resistance and Background Drought Levels in Five Main Grain-Producing Regions of China," Sustainability, MDPI, vol. 8(4), pages 1-20, April.
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    2. Yan, Shicheng & Wu, You & Fan, Junliang & Zhang, Fucang & Guo, Jinjin & Zheng, Jing & Wu, Lifeng, 2022. "Optimization of drip irrigation and fertilization regimes to enhance winter wheat grain yield by improving post-anthesis dry matter accumulation and translocation in northwest China," Agricultural Water Management, Elsevier, vol. 271(C).
    3. Moradi, Layegh & Siosemardeh, Adel & Sohrabi, Yousef & Bahramnejad, Bahman & Hosseinpanahi, Farzad, 2022. "Dry matter remobilization and associated traits, grain yield stability, N utilization, and grain protein concentration in wheat cultivars under supplemental irrigation," Agricultural Water Management, Elsevier, vol. 263(C).
    4. Liu, Shuaikang & Lin, Xiang & Wang, Weiyan & Zhang, Baojun & Wang, Dong, 2022. "Supplemental irrigation increases grain yield, water productivity, and nitrogen utilization efficiency by improving nitrogen nutrition status in winter wheat," Agricultural Water Management, Elsevier, vol. 264(C).
    5. Dai, Yulong & Fan, Junliang & Liao, Zhenqi & Zhang, Chen & Yu, Jiang & Feng, Hanlong & Zhang, Fucang & Li, Zhijun, 2022. "Supplemental irrigation and modified plant density improved photosynthesis, grain yield and water productivity of winter wheat under ridge-furrow mulching," Agricultural Water Management, Elsevier, vol. 274(C).
    6. Feng, Suwei & Ding, Weihua & Shi, Chenchen & Zhu, Xiaoling & Hu, Tiezhu & Ru, Zhengang, 2023. "Optimizing the spatial distribution of roots by supplemental irrigation to improve grain yield and water use efficiency of wheat in the North China Plain," Agricultural Water Management, Elsevier, vol. 275(C).
    7. Mohtashami, Raham & Movahhedi Dehnavi, Mohsen & Balouchi, Hamidreza & Faraji, Hooshang, 2020. "Improving yield, oil content and water productivity of dryland canola by supplementary irrigation and selenium spraying," Agricultural Water Management, Elsevier, vol. 232(C).
    8. Li, Haoru & Li, Xiaoli & Mei, Xurong & Nangia, Vinay & Guo, Rui & Hao, Weiping & Wang, Jiandong, 2023. "An alternative water-fertilizer-saving management practice for wheat-maize cropping system in the North China Plain: Based on a 4-year field study," Agricultural Water Management, Elsevier, vol. 276(C).

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