Phosphorus limitation regulates the responses of microbial carbon metabolism to long-term combined additions of nitrogen and phosphorus in a cropland

Soil Biology and Biochemistry, Journal Year: 2024, Volume and Issue: 200, P. 109614 - 109614

Published: Oct. 11, 2024

Language: Английский

Phosphate Fertilizer Effects on Microbial Resource Limitations in Wheat Cropland: Evidence from Ecoenzymatic Stoichiometry

Agronomy, Journal Year: 2025, Volume and Issue: 15(3), P. 731 - 731

Published: March 18, 2025

The application of phosphate fertilizers significantly influences soil microbial communities and nutrient cycling. Soil enzymes, which are sensitive to levels, play a critical role in metabolism. However, the impact on limitations within metabolism agricultural soils remains poorly understood. In this study, samples were collected from depth 0–20 cm wheat crop subjected three-year field experiment with six different phosphorus (P) rates. β-glucosidase (BG) leucine aminopeptidase (LAP) activities highest under P3 (60 kg P2O5 ha−1) treatment over study period. responses N-acetyl-β-glucosaminidase (NAG) alkaline phosphatase (AKP) increasing P additions varied across years. EES C:N, C:P, vector length greater than 1. characteristics accounted for 70.71% variation enzyme stoichiometry. angle enzymes explained by 0.65 0.73, respectively. Among these factors, ROC exhibited largest direct total effect angle. These research findings offer valuable insights management fertilizers. Consequently, it is recommended enhance carbon levels alleviate improve utilization efficiency.

Language: Английский

Effects of Different Straw Returning Periods and Nitrogen Fertilizer Combinations on Rice Roots and Yield in Saline–Sodic Soil

Agronomy, Journal Year: 2024, Volume and Issue: 14(11), P. 2463 - 2463

Published: Oct. 22, 2024

Straw return is an effective management practice for improving physical and chemical properties of saline–sodic soil in Northeast China. decomposition nutrient release are deeply influenced by climatic factors. In China, straw decomposes slowly due to the long winter with low temperatures. Therefore, season may be a key issue affecting rice. However, impact returning different seasons on rice disregarded not commonly researched. We conducted 2-year field experiment, including two residue treatments: spring treatment (SR) autumn (AR), each containing five N rates (0, 90, 180, 270, 360 kg ha−1) as sub-treatments. The results reveal that, compared treatment, significantly improved root morphology vigor increased number spikes per unit area, which directly yield 4.76% (2020) 6.62% (2021). addition, showed increasing then decreasing trend increase fertilizer application, it was at its maximum when application rate 270 ha−1. Compared able reduce 31.46% 38.48% (2021) without yield. Our findings demonstrate that combined nitrogen fertilization promising systems soils, under conditions best

Language: Английский