|Table of Contents|

Effects of Straw Returning Modes on the Main Physicochemical Properties and Microbial Community of Black Soil in Cold Regions

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2025年8
Page:
114-122
Research Field:
Publishing date:

Info

Title:
Effects of Straw Returning Modes on the Main Physicochemical Properties and Microbial Community of Black Soil in Cold Regions
Author(s):
LI Wenqi1; LYU Pin1; YU Zhimin1; WANG Limin1; ZHANG Jizhou1; LI Xinrong2
(1.Institute of Natural Resources and Ecology，Heilongjiang Academy of Sciences/National Local Joint Engineering Laboratory for Wetland and Ecological Conservation,Harbin,Heilongjiang 150040；2.Institute of Plant Nutrition，Resources and Environment，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097)
Keywords:
straw returning; black soil area; soil nutrient; bacterial community structure; metagenomic sequencing
PACS:
S 154；S 158
DOI:
10.11937/bfyy.20244082
Abstract:
Taking soil for one year treated with different straw returning methods in Wuchang city，Heilongjiang Province as the test material，the soil physicochemical properties and enzyme activity were analyzed，at the same time，metagenomic sequencing technology was used to analyze the community structure and functional diversity characteristics of no straw return，straw return directly，straw were crushed and returned into soil directly，and added decomposed cow manure after crushing straw and return it to the field，comparing the commonalities and differences of soil microorganisms in four different ways of returning straw to the field，combined with environmental factor correlation analysis，in order to provide reference for short-term fertility improvement of black soil,shraw returning measures optimization and straw resource utilization.The results showed that straw crushing and cow manure application increased TN，TOC，AN，AP，and AK by 16.67%，6.79%，1.62%，10.61%，and 3.97%，and increased S-CL and S-CAT activities by 25.26% and 2.44%.All treatments increased the relative abundance of Actinobacteria and Acidobacteria，the S-NP activity，AN，AP，AK，EC，and pH were important influencing factors of bacterial community composition.The differential species in the soil treated with ground straw and added decomposed cow manure to the soil before returning it to the field were g_Chachezhania，g_Intestinimonas，and g_Jiulongibacter.KEGG data suggested that straw return treatments，especially the post-crushing addition of decomposed cow manure，boost soil microbes’ abilities to decompose organic matter and cycle nitrogen.Overall，short-term treatment of crushed straw returning to the field with decomposed cow manure could improve soil fertility and soil enzyme activity，enhance bacterial community richness，altere bacterial community structure and composition，improve the carbon and nitrogen cycling function of soil，thereby promoting the formation of an environment suitable for crop and bacterial growth in black soil.

References:

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Last Update: 2025-05-12