Effects of delayed irrigation during the jointing stage on the photosynthetic characteristics and yield of winter wheat under different planting patterns

Fan, Yanli; Liu, Junmei; Zhao, Jiatao; Ma, Yuan; Li, Quanqi

doi:10.1016/j.agwat.2019.05.004

Cited by 64 publications

(53 citation statements)

References 34 publications

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“…Prior to taking measurements of dark-adapted fluorescence parameters, the leaves were fully dark-adapted for 30 min 37 . The maximal photochemical efficiency (Fv/Fm), actual photochemical efficiency (ΦPSǁ), photochemical quenching coefficient and electron transport rate (ETR) were calculated according to Zivcak et al 38 . In the present study, the reported chlorophyll fluorescence parameter values are the average values of five measurements performed during the grain-filling period.…”

Section: Methodsmentioning

confidence: 99%

Optimized split nitrogen fertilizer increase photosynthesis, grain yield, nitrogen use efficiency and water use efficiency under water-saving irrigation

Zhang

et al. 2020

Sci Rep

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This study aims to investigate optimization of the basal-top-dressing nitrogen ratio for improving winter wheat grain yield, nitrogen use efficiency, water use efficiency and physiological parameters under supplemental irrigation. A water-saving irrigation (SI) regime was established and sufficient irrigation (UI) was used as a control condition. The split-nitrogen regimes used were based on a identical total nitrogen application rate of 240 kg ha−1 but were split in four different proportions between sowing and the jointing stage; i.e. 10:0 (N1), 7:3 (N2), 5:5 (N3) and 3:7 (N4). Compared with the N1, N2 and N4 treatments, N3 treatment increased grain yield, nitrogen and water use efficiencies by 5.27–17.75%, 5.68–18.78% and 5.65–31.02%, respectively, in both years. The yield advantage obtained with the optimized split-nitrogen fertilizer application may be attributable to greater flag leaf photosynthetic capacity and grain-filling capacity. Furthermore, the N3 treatment maintained the highest nitrogen and water use efficiencies. Moreover, we observed that water use efficiency of SI compared with UI increased by 9.75% in 2016 and 10.79% in 2017, respectively. It can be concluded that SI along with a 5:5 basal-top-dressing nitrogen ratio should be considered as an optimal fertigation strategy for both high grain yield and efficiency in winter wheat.

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Section: Methodsmentioning

confidence: 99%

Optimized split nitrogen fertilizer increase photosynthesis, grain yield, nitrogen use efficiency and water use efficiency under water-saving irrigation

Zhang

et al. 2020

Sci Rep

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“…More recently, a two-year trial was conducted in Tai'an on the North China Plain with a mean relative humidity of 50% and total rainfall of 157 mm during the winter wheat growing seasons. The results showed that irrigation during the heading and flowering stages under belt-planting significantly increased the chlorophyll content index and maximum photochemical efficiency in the flag leaves; the higher values of these indexes were even achieved with one irrigation (60 mm) 10 days after the jointing stage, resulting in a significantly increased spike number, grain number per spike, grain yield and WUE (Fan et al, 2019). The higher WUE was achieved mainly because of the higher moisture and favourable topsoil temperature during the seedling establishment period, higher root vigour, increased ability to counteract drought stress (Fan et al, 2014), higher conversion from ineffective water consumption (i.e., soil evaporation) to effective water consumption (i.e., leaf transpiration) (Bian et al, 2016) and a notable increase in spike number (Li et al, 2015).…”

Section: Effects Of Belt-precision Planting On Wheat Agronomical Traitsmentioning

confidence: 96%

“…The higher WUE was achieved mainly because of the higher moisture and favourable topsoil temperature during the seedling establishment period, higher root vigour, increased ability to counteract drought stress (Fan et al, 2014), higher conversion from ineffective water consumption (i.e., soil evaporation) to effective water consumption (i.e., leaf transpiration) (Bian et al, 2016) and a notable increase in spike number (Li et al, 2015). Therefore, belt-precision planting may be a potentially suitable water-saving planting method for wheat and has distinctive advantages in semi-humid regions with decreased irrigation frequency (Bian et al, 2016;Fan et al, 2019).…”

Section: Effects Of Belt-precision Planting On Wheat Agronomical Traitsmentioning

confidence: 99%

“…However, wheat production has been facing increasing challenges with a rapidly increased food demand, resource shortages, excessive fertilizer use, soil deterioration and potential ecological disasters. In particular, water-resource deficits and insufficient precipitation are major factors during the wheat growth period limiting plant growth, development and grain yield in this region (Fan et al, 2019;Zhao et al, 2013). In pursuit of higher productivity of wheat using unreasonable means, including soil, water and nutrient management strategies, a series of environmental problems has emerged.…”

Section: Introductionmentioning

confidence: 99%

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Wheat belt-planting in China: an innovative strategy to improve production

Zhang

et al. 2019

Plant Production Science

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Belt-planting is a novel method for productivity of all wheat (Triticum aestivum L.) varieties, first practiced in China, in which seeds are set on a wide belt (7-12 cm in width) rather than on a conventional line swath ∼3 cm). Belt-planting allows the seeds to be uniformly distributed in the soil and increases the probability of success in establishing desirable stands, spike number per unit area and grain yield. During recent years, belt-planting has been successfully combined with other planting systems. A combination of belt-planting with precision sowing shows the integrated advantages of both technologies. Belt-planting in a strip tillage and direct drilling system has the potential to become an economically viable method for wheat productivity, facilitating the development of environmentally friendly and resource-efficient agriculture. We review the existing literature regarding the potential advantages and underlying mechanisms of belt-planting as a potential method to ensure wheat growth and productivity. We then propose future research directions related to practicing these planting methods to further improve and promote belt-planting-based technologies.

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“…Water supply at the jointing stage is critical for yield formation of winter wheat, and drought in this period severely influences spike numbers and photosynthesis rates and reduces production [9,10,11]. Tillering ability is an important agronomic trait of wheat and an adaptive mechanism that allows the plants to obtain additional source organs [12] and determines grain yield by affecting the spike number per unit area [13,14].…”

Section: Introductionmentioning

confidence: 99%

Effects of supplemental irrigation at the jointing stage on population dynamics, grain yield, and water-use efficiency of two different spike-type wheat cultivars

Shang

Lin

et al. 2020

PLoS ONE

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To solve the problems of yield reduction and low water-use efficiency (WUE) of winter wheat (Triticum aestivum L.) caused by winter and spring drought, a 2-year field experiment (2017-2019) was performed under movable shelter conditions with the large-and multispike cultivars Shannong 23 and 29, respectively, to explore the optimal supplemental irrigation regime. Three wetting layers were used for irrigation at the jointing stage: 0-10 cm (T2), 0-20 cm (T3) and 0-30 cm (T4). No irrigation at the jointing stage (T1) served as the control. Within a given cultivar, the soil water content in the 0-80 cm soil layers increased after irrigation, and the rate of tiller mortality decreased with increasing depth of the wetting layer used for irrigation at jointing. No significant differences were found between the T3 and T4 treatments in the photosynthetic rate (Pn) of the apical leaf of the main stem (O), the first primary tiller (I) and the fourth tiller (IV) after jointing. However, compared with the T3 treatment, the T4 treatment had a significantly higher transpiration rate (Tr) and lower instantaneous water-use efficiency (WUE leaf ) of the apical leaf of the O and tillers I and IV. This eventually led to a decreasing WUE, although there was no significant change in the spike number or grain yield. These results indicated that moderate irrigation at jointing can effectively reduce the tiller mortality, improve the leaf Pn of the tillers, and increase the spike number and grain yield. However, excessive irrigation can significantly increase the leaf Tr of the tillers, lead to inefficient water consumption and significantly reduce the WUE leaf of the tillers and the WUE. Irrigation at the jointing stage brought the soil water content in the 0-20 cm profile to 100% of field capacity, making it the most suitable supplemental irrigation regime for both the large-and multispike cultivars in the North China Plain.

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Effects of delayed irrigation during the jointing stage on the photosynthetic characteristics and yield of winter wheat under different planting patterns

Cited by 64 publications

References 34 publications

Optimized split nitrogen fertilizer increase photosynthesis, grain yield, nitrogen use efficiency and water use efficiency under water-saving irrigation

Optimized split nitrogen fertilizer increase photosynthesis, grain yield, nitrogen use efficiency and water use efficiency under water-saving irrigation

Wheat belt-planting in China: an innovative strategy to improve production

Effects of supplemental irrigation at the jointing stage on population dynamics, grain yield, and water-use efficiency of two different spike-type wheat cultivars

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