Improving yield and nitrogen use efficiency through alternative fertilization options for rice in China: A meta-analysis

Ding, Wencheng; Xu, Xinpeng; He, Ping; Ullah, Sami; Zhang, Jia-Jia; Cui, Zhenling; Zhou, Wei

doi:10.1016/j.fcr.2018.08.001

Cited by 130 publications

(75 citation statements)

References 42 publications

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“…Most previous reports have shown that straw incorporation increased grain yield [43][44][45], while other studies reported the negative impacts of straw returning on rice yield [30,46]. The results of this paper displayed that the variation of rice yield was affected by the amount and the method of oilseed rape straw returning.…”

Section: Impacts Of Straw Returning On Tiller Growth and Yield Of Hybmentioning

confidence: 50%

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

et al. 2019

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Incorporating oilseed-rape straw in soil is one of the effective methods for enhancing the use efficiency of agricultural resources in the rape-rice rotation system. However, the impacts of oilseed-rape straw incorporation on root growth and dynamic changes in soil are still unclear. In order to provide a deeper understanding of the oilseed rape straw return on rice growth and productivity, the experiment was conducted in the field and in a specially-designed pots system from 2016 to 2017 by means of two straw returning methods and four straw returning amounts. In the early stage of rice growth (0–36 days after rice transplanting) the straw returning treatments decreased 1.0–8.6 mg/plant in bleeding density and 0.10–6.11, 0.06–0.31, and 0.52–0.84 μmol/(g h) in the activity of glutamine synthetase (GS), glutamic-oxalacetic transaminase (GOT), and glutamic-pyruvic transaminase (GPT), respectively. Oilseed rape straw returned by mulching induced negative impacts on new germinating roots in 0–10 cm of soil, while the negative impacts were observed on roots in 10–30 cm of soil for straw returned by plowing. In the later stage of rice growth (56–75 days after rice transplanting), oilseed rape straw returning produced some positive impacts on rice roots, which enhanced the yield of rice. Conclusively, our findings suggested that dynamic root growth and the activity of root enzymes are two major factors behind the slow reviving of rice after transplanting in the straw returning field. Plowing is a more appropriate method of straw returning than mulching in the rape-rice rotation system in the Sichuan basin area, with a straw incorporation rate of 3.0 t/hm2.

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Section: Impacts Of Straw Returning On Tiller Growth and Yield Of Hybmentioning

confidence: 50%

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

et al. 2019

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“…The nitrogen application rate of FP2 was 22.2% lower than that of OPT and yet the rice yield was only decreased by 6.6% and there was no significant difference from that of OPT. This might be due to the application of organic fertilizer to FP2 for increasing the rice yield [23]. The combination of organic and inorganic fertilizers can promote nutrient synchronization and nitrogen use efficiency and reduce nutrient loss by converting inorganic nitrogen into organic forms [24].…”

Section: Plos Onementioning

confidence: 99%

Effects of different fertilization modes on rice yield and quality under a rice-crab culture system

Zhao

Liang

et al. 2020

PLoS ONE

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Rice-crab culture is the characteristic rice ecological breeding model used in the Panjin area of Liaohe River Basin, China, and it can improve the ecological environment and create increased economic benefits. From a food perspective, both rice yield and quality, which are closely related to the fertilization mode, should be considered. However, the effect of different fertilization modes on rice quality has not been comprehensively investigated in this coculture system. This study investigated the effects of three fertilization modes(FP1, FP2, and OPT) divided according to different fertilization types and methods on rice yield and quality, and set up a non-fertilized control group. In the rice-crab culture system, FP2 used fewer fertilizers and had a lower economic cost, and the yield was only slightly less than that of OPT(highest yield) but there was no statistical difference. FP2 elicited the best appearance quality and better cooking and eating quality among all treatment modes. Compared with CK, three fertilization modes significantly increased the protein content in rice and decreased the amylose content, which would lead to the deterioration of rice eating quality. However FP2 had the least protein increase and the least amylose reduction. There was no significant change in crude fat and starch content. Therefore, the FP2 fertilization mode was the best choice for the rice-crab culture system, as it significantly improved rice yield and increased rice quality at a relatively low cost.

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“…Grassini et al [48] believed that China's rice production has reached or exceeded 80% of production potential, thus it is hard to increase yield without incurring further economic cost and technical difficulties. However, some scholars argued that there is the potential to reduce N use and increase grain yield by rational management techniques [26,34]. For example, Fan et al [49] showed that compared with farmers' practice, improved crop management can increase rice yield of 20% with N fertilizer savings of 18%.…”

Section: Yield Gaps and Nitrogen Use Efficiency Gapsmentioning

confidence: 99%

“…There are many biotic and abiotic factors that interact to limit yields and NUE, e.g., inappropriate crop management practices [7,22,23], poor soil fertility and weed infestation [24] and wrong sowing time [25], etc. Previous studies have shown that rice yield and NUE can be increased by new technologies and management activities adopted by farmers [26][27][28][29]. In sub-Saharan Africa (SSA) growing improved cultivars, adopting technologies that improve nutrient and water use efficiency and weed management could increase relative yield gains, e.g., improving weed management alone could increase relative yield gains by 91.6% [30].…”

Section: Introductionmentioning

confidence: 99%

The Potential for Improving Rice Yield and Nitrogen Use Efficiency in Smallholder Farmers: A Case Study of Jiangsu, China

et al. 2020

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Closing yield (YG) and nitrogen use efficiency (NUE) gaps amongst smallholder farmers are critical to ensuring food security and environmental sustainability. Here we report a comprehensive analysis of a data set derived from farm-surveys and previously published studies in a typical high N input area of China. Using scenario analysis, farmers from both sources were divided into four rice production levels to assess the YG and NUE of smallholder farmers. Farm surveys showed that rice yield and partial factor productivity of applied N (PFPN) averaged 8273 kg ha−1 and 23.1 kg kg−1 at regional-scale, with a potential increase of 21–43% and 33–52%, respectively. A wide variation in yield and PFPN across different types of farmer was observed. Optimized N management significantly narrowed YGs by 3.7% and PFPN gap by 63.5% on average based on the published literature. Multiple factors, including excessive N rates, small rice planting area (0.33 ha), the aging (51 years old) and low education level (6 years of education) of the major labor force, can partly explain causes of yield and NUE gaps. These findings provide farm-based evidence that centralized management, good agronomy plus advances in knowledge and technologies are essential for future agricultural development.

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Improving yield and nitrogen use efficiency through alternative fertilization options for rice in China: A meta-analysis

Cited by 130 publications

References 42 publications

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

Negative and Positive Impacts of Rape Straw Returning on the Roots Growth of Hybrid Rice in the Sichuan Basin Area

Effects of different fertilization modes on rice yield and quality under a rice-crab culture system

The Potential for Improving Rice Yield and Nitrogen Use Efficiency in Smallholder Farmers: A Case Study of Jiangsu, China

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