Study on the Nutrient Optimal Management Strategy of High and Stable Annual Yield in the Rice–Wheat System: A 10-Year Term Experiment

Guo-fa, Zhang; Zhang, Jianwei; Xu, Liping; Zhou, Yan; Hou, Pengfu; Yang, Fei; Li, Weiwei; Liu, Zhenghui; Ding, Yanfeng; Li, Ganghua

doi:10.3390/agronomy12030698

Cited by 2 publications

(1 citation statement)

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“…Rice (Oryza sativa L.) and wheat (Triticum aestivum L.) cultivated in China represent 29% and 18% of global rice and wheat yields, respectively (Aslam et al, 2021). Rice and wheat are important food crops in China, together accounting for 51.6% of China's total grain yield (Zhang et al, 2022). Dietary intake accounts for 88-98% of PAH exposure in humans worldwide (Singh & Agarwal, 2018).…”

Section: Introductionmentioning

confidence: 99%

The nutrient preferences of rice and wheat influence fluoranthene uptake

Xiao

Zhang

et al. 2022

Front. Environ. Sci.

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Applications of the key plant nutrient nitrogen (N) increase the uptake and accumulation of pollutants such as polycyclic aromatic hydrocarbons (PAHs). However, it is unclear how a plant’s preference for a particular form of N in the soil affects the uptake and accumulation of PAHs. In this study, we investigated the physiological mechanisms involved in fluoranthene uptake by rice (Oryza sativa L.) and wheat (Triticum aestivum L.) and examined how these mechanisms were affected by different forms of N treatment under an equivalent N supply. Both N form and plant species affected plant fluoranthene uptake. Rice accumulated more fluoranthene than wheat under an equivalent N supply, while the transfer coefficient of fluoranthene in wheat was higher than that in rice. Fluoranthene accumulation in rice and wheat was positively correlated with plant root morphology parameters, and the transfer coefficient was positively correlated with transpiration. Of the treatments examined, ammonium (NH4+-N)-treated rice and nitrate (NO3−-N)-treated wheat accumulated the most fluoranthene at equivalent N supply. Fluoranthene accumulation was positively correlated with plant growth, total nitrogen N content, total protein content, and antioxidant enzyme activities. Based on a partial least squares path model (PLS-PM) analysis, total plant N was the main factor influencing fluoranthene uptake by rice and wheat treated with different forms of N. Overall, ammonium-preferring rice and nitrate-preferring wheat had the highest nutrient content in their preferred N forms, which also promoted fluoranthene uptake. Therefore, regulating the form of N applied to the soil could be a suitable strategy to improve the safety of agricultural products.

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Section: Introductionmentioning

confidence: 99%