N, P and K use efficiency and maize yield responses to fertilization modes and densities

Li, Guanghao; Cheng, Qian; Li, Long; Lu, Dalei; Lu, Wei

doi:10.1016/s2095-3119(20)63214-2

Cited by 25 publications

(12 citation statements)

References 32 publications

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“…On the one hand, the growth of the community is stimulated because of the increase in precipitation, and by the consumption of soil N and P elements. On the other hand, this may be because of higher precipitation promoting soil N and P leaching loss (Li et al, 2021). This is consistent with most of the previous research findings (Chen et al, 2020; Wang, Chi, et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Effects of precipitation changes on the stoichiometry and photosynthetic characteristics of Stipa bungeana Trin. at different growth stages in the Loess Plateau, China

et al. 2022

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The aim of this study was to explore the response of the stoichiometric and photosynthetic characteristics of a dominant plant species in a typical grassland to changes in precipitation. Rain shelter technology was used to simulate 50%, 100%, and 150% of natural rainfall. The photosynthetic rate (Pn), intercellular CO2 concentration (Ci), transpiration rate (Tr), stomatal conductance (Gs), and ecological stoichiometry of the rhizosphere soil and Stipa bungeana at different growth stages were measured in May, July), and September, 2019 after 2 years of rainfall control. The results showed that the aboveground carbon (C) content of plants grown under 150% precipitation was significantly higher than that of plants grown under 100% precipitation in September. The aboveground nitrogen (N) content of plants under 50% precipitation was significantly higher than the plants grown under 100% precipitation. Under all different precipitation treatments, the aboveground C:N ratio was the lowest (16.4–19.6) in May. The range of average aboveground C: phosphorous (P) ratio was 373.7–617.8, and the N:P ratio in the descending order was July > May > September. The 50% precipitation treatment promoted the highest accumulation of underground C at all the growth stages. The productivity of the grassland under the 100% and 150% precipitation treatments was limited by the rhizosphere soil N and P. The underground C, P, C:P, and aboveground C:N ratios were sensitive indicators. Aboveground and underground N:P ratio showed the strongest significant correlation (P < 0.001), and the correlation between underground stoichiometry and rhizosphere soil P (P < 0.001) was stronger than that with rhizosphere soil N (P < 0.05). The correlation between Ci and stoichiometry was opposite in direction to the correlation between Pn, Tr, Gs, and stoichiometry. The research results will provide a scientific reference for understanding of the material cycle and judgment of vegetation nutrient limitations in the Loess Plateau.

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Section: Discussionmentioning

confidence: 99%

Effects of precipitation changes on the stoichiometry and photosynthetic characteristics of Stipa bungeana Trin. at different growth stages in the Loess Plateau, China

et al. 2022

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“…Increasing planting density is an effective method for improving output yield in agricultural systems ( Li et al., 2021 ; Zhou et al., 2019b ). A similar shoot biomass accumulation and P uptake were observed for the same P supply intensity at a high planting density under the SSP treatment and at a low planting density under the MAP treatment.…”

Section: Discussionmentioning

confidence: 99%

Complementary effects of phosphorus supply and planting density on maize growth and phosphorus use efficiency

et al. 2022

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Phosphorus (P) supply and planting density regulate plant growth by altering root morphological traits and soil P dynamics. However, the compensatory effects of P supply and planting density on maize (Zea mays L.) growth and P use efficiency remain unknown. In this study, we conducted pot experiments of approximately 60 days to determine the effect of P supply, i.e., no P (CK), single superphosphate (SSP), and monoammonium phosphate (MAP), and different planting densities (low: two plants per pot; and high: four plants per pot) on maize growth. A similar shoot biomass accumulation was observed at high planting density under CK treatment (91.5 g plot–1) and low planting density under SSP treatment (94.3 g plot–1), with similar trends in P uptake, root morphological traits, and arbuscular mycorrhizal colonization. There was no significant difference in shoot biomass between high planting density under SSP (107.3 g plot–1) and low planting density under MAP (105.2 g plot–1); the corresponding P uptake, root growth, and P fraction in the soil showed the same trend. These results suggest that improved P supply could compensate for the limitations of low planting density by regulating the interaction between root morphological traits and soil P dynamics. Furthermore, under the same P supply, the limitations of low planting density could be compensated for by substituting MAP for SSP. Our results indicate that maize growth and P use efficiency could be improved by harnessing the compensatory effects of P supply and planting density to alter root plasticity and soil P dynamics.

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“…Li et al. (2021) reported that NPK uptake rates had interacting effects on plants. The present study showed that UNS not only promoted N uptake, but also contributed to P and K uptakes and accumulation.…”

Section: Discussionmentioning

confidence: 99%

Effects of nitrogen type on rainfed maize nutrient uptake and grain yield

et al. 2021

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Urea blended with slow‐release nitrogen fertilizer (UNS) is considered as a promising alternative to increase crop yields compared with the conventional split urea (U) application or slow‐release nitrogen fertilizer (SRF). However, the yield‐increasing effect and mechanism of UNS under different rainfall conditions is still unclear. A field experiment was conducted during 2016–2020 to evaluate the effects of UNS on dry matter (DM), nutrient uptake, and grain yield of rainfed maize (Zea mays L.) in Northwest China. The results showed that UNS increased the average total DM and N uptake by 19.6 and 27.5% compared with U, and by 15.8 and 18.2% relative to SRF, respectively. The average maximum DMaccumulation and N uptake rates in UNS were increased by 26.5 and 6.5% compared with those in U, and by 20.4 and 14.0% relative to those in SRF, respectively. Compared with U and SRF, UNS increased N remobilization from vegetative organs to grains after silking by 51.9 and 40.7%, respectively. Dry matter accumulation, NPK uptake, and N remobilization in 2017 (“pre‐dry”) and 2018 (“normal”) were greater than those in 2016 (“post‐dry”), 2019 (“wet”), and 2020 (“wet”). Grain yield in U was relatively low and stable over the five growing seasons, while grain yield followed the order of 2017 > 2018 ≈ 2019 ≈ 2020 > 2016 in UNS, and 2018 ≈ 2019 > 2020 > 2017 > 2016 in SRF. The UNS increased grain yield by 46.2 and 28.6% compared with U and SRF, respectively. Therefore, UNS can be used as a promising N management practice to improve the ability of agricultural ecosystems to cope with climate change, and ultimately maintain high crop yields.

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N, P and K use efficiency and maize yield responses to fertilization modes and densities

Cited by 25 publications

References 32 publications

Effects of precipitation changes on the stoichiometry and photosynthetic characteristics of Stipa bungeana Trin. at different growth stages in the Loess Plateau, China

Effects of precipitation changes on the stoichiometry and photosynthetic characteristics of Stipa bungeana Trin. at different growth stages in the Loess Plateau, China

Complementary effects of phosphorus supply and planting density on maize growth and phosphorus use efficiency

Effects of nitrogen type on rainfed maize nutrient uptake and grain yield

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