Alternative fertilizer and irrigation practices improve rice yield and resource use efficiency by regulating source-sink relationships

Zhang, Hao; Jing, Wenjiang; BuHong, Zhao; Wang, Weilu; Xu, Yunji; Zhang, Weiyang; Gu, Junfei; Liu, Lijun; Wang, Zhiqin

doi:10.1016/j.fcr.2021.108124

Cited by 36 publications

(25 citation statements)

References 55 publications

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“…The knowledge‐based N management practices can increase rice yield, 31,3,15 which is in line with the present study (Table 1). However, Moe et al 32 .…”

Section: Discussionsupporting

confidence: 90%

“…These may be the reason for the similar number of panicles in different nutrient management practices in this study (Table 1). The highest rice yield in optimal N management could be explained by its relative higher 1000‐grain weight and filled grains rate (Table 1), which was strongly related to the improvement of sink size and strength, the enhancement of leaf source and root source, and the coordination of source–sink relationship during rice grain filling 3 …”

Section: Discussionmentioning

confidence: 99%

“…Rice ( Oryza sativa L.) is a major staple crop in much of the world, 1 providing nearly 60% of the calorific intake for more than three billion people 2,3 . In China, the increase of rice yield is largely dependent on high or excessive nitrogen (N) fertilizer input 4,5 .…”

Section: Introductionmentioning

confidence: 99%

“…Rice (Oryza sativa L.) is a major staple crop in much of the world, 1 providing nearly 60% of the calorific intake for more than three billion people. 2,3 In China, the increase of rice yield is largely dependent on high or excessive nitrogen (N) fertilizer input. 4,5 However, high N fertilizer input for rice production resulted in large amounts of N loss, 6,7 which is not sustainable and leads to global environmental deterioration 2,8 and grain quality decline.…”

Section: Introductionmentioning

confidence: 99%

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Determining optimal nitrogen management to improve rice yield, quality and nitrogen use efficiency based on multi‐index decision analysis method

et al. 2023

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BACKGROUND: Reasonable nitrogen (N) supply is critical for increasing rice yield while improving grain quality and nitrogen use efficiency (NUE). However, the trade-off relationship between yield, quality and NUE of rice under N management has not been well understood enough. In the present study, a 2-year field experiment was conducted to identify optimal N fertilizer management practices that resulted in high-yield, high-quality and high-NUE by using the technique for order preference by similarity to an ideal solution (TOPSIS) with entropy weight (EW) method.RESULTS: All the parameters of rice yield, quality and efficiency were remarkably affected by fertilization treatments. Compared with farmer's fertilization practice (FFP), optimizing N fertilizer treatment (OPT) and substituting 20% of N fertilizer with pig manure based on OPT treatment (OPTM) increased grain yield (2.87-6.62%) by maintaining higher 1000-grain weight and filled grains rate. The agronomic NUE (AE) and N partial factor productivity (PFP) under OPT and OPTM treatment were also remarkably increased by 32.81-43.01% and 28.59-33.28% with respect to the value under FFP treatment, respectively. Meanwhile, OPT and OPTM significantly improved the milling quality of rice by increasing brown rice rate (0.71-1.17%) and head rice rate (1.34-2.31%). OPT and OPTM significantly improved appearance quality by decreasing chalkiness and eating quality by reducing amylose content in 2020. The TOPSIS with EW showed that rice comprehensive evaluation could be maintained at a high level under OPT and OPTM.CONCLUSION: OPT and OPTM were nutrient management modes of high-yield, high-quality and high-efficiency, and promising practice to improve rice comprehensive productivity. This strategy is also highly-consistent with the United Nations Sustainable Development Goals.

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“…The knowledge‐based N management practices can increase rice yield, 31,3,15 which is in line with the present study (Table 1). However, Moe et al 32 .…”

Section: Discussionsupporting

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Determining optimal nitrogen management to improve rice yield, quality and nitrogen use efficiency based on multi‐index decision analysis method

et al. 2023

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“…According to the source-sink theory, yield formation is governed by photosynthetic efficiency and biomass accumulation (the two most sensitive crop growth processes affected by heat stress) [17,18]. Crop photosynthetic production is determined by leaf photosynthetic rate, leaf area expansion, and photosynthetic duration.…”

Section: Introductionmentioning

confidence: 99%

Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation

Mahmood

Wang

Ali

et al. 2021

Plants

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Extreme temperature events as a consequence of global climate change result in a significant decline in rice production. A two-year phytotron experiment was conducted using three temperature levels and two heating durations to compare the effects of heat stress at booting, flowering, and combined (booting + flowering) stages on the production of photosynthates and yield formation. The results showed that high temperature had a significant negative effect on mean net assimilation rate (MNAR), harvest index (HI), and grain yield per plant (YPP), and a significant positive effect under treatment T3 on mean leaf area index (MLAI) and duration of photosynthesis (DOP), and no significant effect on biomass per plant at maturity (BPPM), except at the flowering stage. Negative linear relationships between heat degree days (HDD) and MNAR, HI, and YPP were observed. Conversely, HDD showed positive linear relationships with MLAI and DOP. In addition, BPPM also showed a positive relationship with HDD, except at flowering, for both cultivars and Wuyunjing-24 at combined stages. The variation of YPP in both cultivars was mainly attributed to HI compared to BPPM. However, for biomass, from the first day of high-temperature treatment to maturity (BPPT-M), the main change was caused by MNAR followed by DOP and then MLAI. The projected alleviation effects of multiple heat stress at combined stages compared to single-stage heat stress would help to understand and evaluate rice yield formation and screening of heat-tolerant rice cultivars under current scenarios of high temperature during the rice-growing season.

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Silicon nutrition improves the quality and yield of rice under dry cultivation

Jiang,

Xu,

Sun

et al. 2023

J Sci Food Agric

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BACKGROUNDDry cultivation of rice is a water‐saving, emission reduction, and labor‐saving rice farming method. However, the development of rice under dry cultivation is hampered by the limitations of dry cultivation on rice yield and rice quality. We hypothesized that additional silicon (Si) would be a measure to address these limitations or challenges.RESULTSIn this study, we set up field trials with three treatments: flooded cultivation (W), dry cultivation (D) and dry cultivation plus silicon (DS). Yield and quality were reduced under D treatment compared to W treatment. The addition of silicon promoted root development, increased plant height and leaf area, increased photosynthetic enzyme activity, Pn and SPAD values, and increased biomass under dry crop conditions. Under the drought conditions, silica up‐regulated the expression of AGPSI, SBEI, SBEIIb, SSI and SSII‐1 genes and the activities of AGPase, SSS and SBE enzymes, which reduced protein (PC), amylose (AC), chalkiness percentage (CP) and chalkiness degree (CD), increased brown rice rate (BR), milled rice rate (MR) and head milled rice rate (HMR), and improved rice quality. In addition, the increase of AGPase, SSS and SBE enzyme activities promoted the filling rate, and the number of spikes was guaranteed while the yield was improved by promoting the seed setting rate and 1000‐grain weight.CONCLUSIONThe results indicate that adding appropriate amounts of silicon fertilizer can improve the yield and quality of rice under dry cultivation by regulating source supply capacity and grain starch synthesis.This article is protected by copyright. All rights reserved.

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Alternative fertilizer and irrigation practices improve rice yield and resource use efficiency by regulating source-sink relationships

Cited by 36 publications

References 55 publications

Determining optimal nitrogen management to improve rice yield, quality and nitrogen use efficiency based on multi‐index decision analysis method

Determining optimal nitrogen management to improve rice yield, quality and nitrogen use efficiency based on multi‐index decision analysis method

Individual and Combined Effects of Booting and Flowering High-Temperature Stress on Rice Biomass Accumulation

Silicon nutrition improves the quality and yield of rice under dry cultivation

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