Fate of Fertilizer Nitrogen in the Field 2 Years After Biochar Application

Plants, Journal Year: 2025, Volume and Issue: 14(5), P. 682 - 682

Published: Feb. 23, 2025

This study aimed to clarify the scientific quantification of fertilizer nitrogen (N) uptake and utilization, its destination, residual distribution in soil at a depth 0–30 cm after biochar application using 15N tracer technology. The purpose was provide theoretical basis for developing strategy N irrigated farmland areas. Two levels were set up labeling method microareas large fields: regular amount (N1: 300 kg·ha−1) reduction by 15% (N2: 255 kg·ha−1). Further, three up: no (B0: 0 kg·ha−1), low (B1: 10 × 103 medium (B2: 20 tested derived from corn stover (maize straw). natural abundance 15N-labeled N, total content each aboveground organ, spring wheat field maturity determined, yield measured corresponding plots. proportion organ 20.60–35.32% more than 64.68%, respectively. Moreover, showed decreasing trend with an increase application. utilization rate, residue rate cm, loss ranged 15.21% 29.61%, 23.33% 28.93%, 38.54% 58.54%, 41.46% 61.46%, soil, all increased gradually application, except which decreased gradually. When combined (B2N2), significantly improved, mainly due number grains spikes. Under this treatment, spikes 41.9, reached 7075.54 kg·ha−1, 9.69–28.25% 10.91–25.35%, respectively, compared other treatments. Yield 25.35%, 48.24% under B2N2 treatment. Biochar could promote various organs as well cm. In study, (255 kg·ha−1 initially helped achieve goal increasing uptake, improving providing optimal irrigation area. These results substantiate hypothesis that enhances (Triticum aestivum L.) assimilation fertilizer-derived (15N) while concomitantly retention matrix, sustainable framework management farmlands.

Language: Английский

Flue-cured tobacco intercropping with insectary floral plants improves rhizosphere soil microbial communities and chemical properties of flue-cured tobacco

BMC Microbiology, Journal Year: 2024, Volume and Issue: 24(1)

Published: Nov. 4, 2024

Continuous cropping of the same crop leads to land degradation. This is also called continuous-cropping obstacle. Currently, intercropping tobacco with other crops can serve as an effective strategy alleviate continuous obstacles. In this study, K326 and insectary floral plants were used materials, seven treatments monoculture (CK), intercropped Tagetes erecta, Vicia villosa, Fagopyrum esculentum, Lobularia maritima, Trifolium repens, Argyranthemum frutescens respectively, set up study their effects on rhizosphere soil chemical properties composition structure microbial community tobacco. The 16 S rRNA gene ITS amplicons sequenced using Illumina high-throughput sequencing. tobacco/insectary influence properties, which change communities. CK treatment groups microorganisms had significantly different genera, such T. repens A. increased number Fusarium V. L. Sphingomonas unknown Gemmatimonadaceae. Additionally, villosa maritima changed fungal bacteria positive correlation between genera fungi bacterial greater than CK. pathway carbohydrate metabolism, amino acid energy metabolism in decreased after cropping. Fungal symbiotic trophic saprophytic plant pathogen animal frutescens. communities correlated respectively. reveals that plants, particularly affects alters communities, increasing abundance certain genera. enhances pathways related carbohydrate, acid, bacteria. These findings suggest could provide a promising overcome challenges associated by regulating environment.

Language: Английский