Effects of wheat straw mulch application and nitrogen management on rice root growth, dry matter accumulation and rice quality in soils of different fertility

Yan, Fengjun; Sun, Yongjian; Xu, Hong‐Guang; Yin, Yue; Wang, Haiyue; Wang, Chunyu; Guo, Chuling; Yang, Zhiyuan; Sun, Yuanyuan; Ma, Jun

doi:10.1007/s10333-018-0643-1

Cited by 48 publications

(31 citation statements)

References 24 publications

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“…For example, it has been suggested that BC addition significantly increased the root number, density, length, specific surface area, branching and fine roots production as well as root dry weight of maize seedlings [19,25]. Yan et al (2018) reported that wheat straw mulch had a clear effect on the morphology of rice root, especially on the total root surface area and total root length [54]. Consequently, the influence of straw input on root agronomy may play an important role in the response of root exudation and then rhizosphere chemistry to the different treatments of straw input.…”

Section: Effects Of Straw Input On Rhizosphere Metabolite Profilingmentioning

confidence: 99%

“…The carbohydrate metabolism pathways including glycolysis, citrate cycle, galactose metabolism, pyruvate metabolism, starch and sucrose metabolism, amino sugar and nucleotide sugar metabolism showed significant association with organic acids ( Figure S4). The chemical composition of rhizosphere and root exudation is important for the attraction and shaping of microbial communities in rhizosphere [6,47,54]. The rhizodeposition of organic molecules can increase nutrient availability and provide sufficient nutrients to improving microbial growth in the rhizosphere [18,41].…”

Section: Association Of Microbial Communities With Rhizosphere Metabomentioning

confidence: 99%

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Straw input can parallelly influence the bacterial and chemical characteristics of maize rhizosphere

Jun

et al. 2020

Environmental Pollutants and Bioavailability

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The effects of straw input, including three strategies: chopped straw, straw-derived compost and biochar, on bacterial communities and chemical composition in maize rhizosphere were investigated according to a three-year field experiment. Illumina MiSeq sequencing showed that biochar input increased bacterial richness but decreased bacterial diversity in rhizosphere when compared with the results from no straw control. The functional prediction of Kyoto Encyclopedia of Genes and Genome pathways confirmed that soil subjected to straw input changed the abundance of microbiomes involved in carbohydrate metabolism significantly. Metabolomics analysis showed that straw input changed the metabolite profile of the rhizosphere soil of maize, which was most evident in the treatment of chopped-straw input. The match between the global metabolic profiles and bacterial distribution patterns was weak by performing Procrustes analysis (m 2 = 0.851, R = 0.386, P < 0.05). However, the associations between the special members of genera, predicted function involved in carbohydrate metabolism, and rhizosphere metabolites, including sugars and organic acid, were significant (P < 0.05).

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Section: Effects Of Straw Input On Rhizosphere Metabolite Profilingmentioning

confidence: 99%

Section: Association Of Microbial Communities With Rhizosphere Metabomentioning

confidence: 99%

Straw input can parallelly influence the bacterial and chemical characteristics of maize rhizosphere

Jun

et al. 2020

Environmental Pollutants and Bioavailability

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“…The incorporation of crop residues, such as straw, can have positive effects on agriculture, including improved nutrient availability and water retention, better soil structures and a less risk of erosion [2]. Straw incorporation can also decrease the amount of nitrogen fertilizer needed [3]. As such, straw return can reduce soil degradation, maintain soil fertility and promote crop production in intensive agricultural systems [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…However, straw return can bring about a series of agricultural problems. For example, straw can immobilize nutrients from soil and fertilizers, which inhibit the early growth of rice [2,3]. This may be due to the rapid decomposition of straw and the accumulation of large amounts of harmful substances, which can inhibit rice growth [7].…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is imperative to accelerate the maturation of straw and reduce the inhibition of early rice growth by straw return. Yan et al [3] showed that straw mulch, which increased the content of N fertilizer, could significantly reduce the growth inhibition at the early stages of rice growth and increase dry matter accumulation. However, the use of high amounts of N leads to its lower application in subsequent periods, resulting in a shortage of N needed for rice growth, especially in low-fertility paddy soil.…”

Section: Introductionmentioning

confidence: 99%

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Effect of the Applied Fertilization Method under Full Straw Return on the Growth of Mechanically Transplanted Rice

Tang

Zhang

et al. 2020

Plants

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This study aimed to improve nitrogen utilization and alleviate the inhibition of straw decomposition during early tillering and the growth of paddy after straw return. Specifically, three different nitrogen fertilizer (base fertilizer) application methods were tested under full straw return: applying the compound fertilizer once (J1), applying the compound fertilizer twice (J3) and applying the ammonium carbonate fertilizer plus compound fertilizer (J2). Full straw return without fertilizer (CK1) and no straw return without fertilizer (CK2) were used as the controls. The results showed that treatment with ammonium carbonate fertilizer combined with compound fertilizer (J2) significantly enhanced straw decomposition, light interception and dry matter accumulation at an early stage of tillering, but reduced tiller occurrence at a late tillering stage. Grain yield was affected due to reduced dry matter accumulation, nitrogen use efficiency and number of effective panicles. There were no significant differences in rice growth, nitrogen use efficiency and grain yield between the one-time or two-time compound fertilizer application methods. In contrast, treatment with ammonium carbonate fertilizer combined with compound fertilizer (J2) under full straw return effectively improved straw decomposition and accelerated the return of green and tillering. In addition, the proportion of ammonium carbonate fertilizer affected the nutrient utilization efficiency and yield at later stages.

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Advantages linked to root development enhance rice biomass accumulation under elevated carbon dioxide conditions

Zhang

Zhu

et al. 2020

Agronomy Journal

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To explore the effects of an increased CO 2 concentration on the growth and N absorption and utilization of different rice (Oryza sativa L.) cultivars, the Liangyoupeijiu (LY) and Nanjing 9108 (NJ) rice cultivars were grown under ambient CO 2 (400 μmol mol −1) and elevated CO 2 (600 μmol mol −1) combined with high N (2.5 mM) and low N (0.5 mM) treatments. The effects of elevated CO 2 on root morphological and physiological characteristics, N uptake and utilization, and dry matter accumulation and distribution were analyzed. The results showed that the elevated CO 2 levels significantly increased the total biomass of LY under different N levels but only significantly increased the total biomass of NJ under high N. Elevated CO 2 significantly increased the N concentrations in the organs of LY but had no significant effect on the N concentrations in the organs of NJ. As a result, elevated CO 2 significantly increased the N accumulation of LY but decreased the N uptake of NJ under low N. Under elevated CO 2 conditions, the total root length and root surface area of LY increased, and the roots also maintained high activity. The larger roots and higher physiological activity and N accumulation of LY were the important reasons for the high levels of dry matter production in response to elevated CO 2. Improvements in the root morphology and physiological activity of rice in future breeding efforts should enhance the dry matter production of low-response rice.

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Effects of wheat straw mulch application and nitrogen management on rice root growth, dry matter accumulation and rice quality in soils of different fertility

Cited by 48 publications

References 24 publications

Straw input can parallelly influence the bacterial and chemical characteristics of maize rhizosphere

Straw input can parallelly influence the bacterial and chemical characteristics of maize rhizosphere

Effect of the Applied Fertilization Method under Full Straw Return on the Growth of Mechanically Transplanted Rice

Advantages linked to root development enhance rice biomass accumulation under elevated carbon dioxide conditions

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