生态学杂志2026，Vol.45Issue(3)：820-826,7.DOI:10.13292/j.1000-4890.202603.014
施用粉末状虾粉对土壤容重及养分的影响
Effects of crawfish powder application on soil bulk density and nutrients
摘要
Abstract
We investigated the effects of applying crayfish by-products on soil physicochemical properties based on a field experiment with treatments including no fertilization(N0),chemical fertilizer application(N12),and dif-ferent application rates of crayfish powder(X200,X250 and X300).We analyzed the changes in soil bulk density,pH,organic matter and nutrient contents under different treatments.The results showed that there was no significant difference in soil bulk density of the 0-20 cm soil plough layer between the N0 and N12 treatments in two years of the trial,while the soil bulk density in X200,X250 and X300 were 7％,8.4％and 8.5％lower than that in the N12 treatment respectively.Soil pH in the N0 treatment was the highest in two years,while there were minor differ-ences among the N12,X200,X250,and X300 treatments.In two years of the trial,the contents of soil organic matter,total nitrogen,total phosphorus,total potassium,alkali-hydrolyzable nitrogen and available phosphorus in the X200,X250 and X300 treatments did not show significant differences compared with the N12 treatment,while the soil available potassium content showed a significant decreasing trend in the later growth stage of rice.Compared with the N0 treatment,the contents of soil organic matter,total nitrogen,total phosphorus,alkali-hydrolyzable ni-trogen and available phosphorus in the N12,X200,X250 and X300 treatments significantly increased in two years,among which the increase ranges of soil organic matter were 4.9％-17.3％,5.5％-14.6％,4.6％-16％and 6.8％-14.5％respectively;soil total potassium content did not show significant differences.Except for the N12 treatment,soil available potassium content in the X200,X250 and X300 treatments significantly decreased in the later growth stage of rice.In conclusion,applying crayfish powder can reduce soil bulk density,increase soil organic matter content and soil nutrient contents(except available potassium),thus contributing to improving soil structure and fertility.关键词
小龙虾副产物/土壤容重/土壤有机质/土壤全量养分/土壤速效养分Key words
crawfish by-product/soil bulk density/soil organic matter/soil total nutrient/soil available nutrient引用本文复制引用
梁玉刚,李昱娇,匡炜,赵杨,戴力,罗先富,方宝华..施用粉末状虾粉对土壤容重及养分的影响[J].生态学杂志,2026,45(3):820-826,7.基金项目
湖南省农业科技创新项目(2024CX19)和国家重点研发项目(2024YFD2301401)资助. （2024CX19）
