生态环境学报2026，Vol.35Issue(9)：1402-1411,10.DOI:10.16258/j.cnki.1674-5906.2026.09.007
杨树农作物间作与施肥对土壤养分和植物生长的影响
Effects of Poplar-crop Intercropping and Fertilization on the Soil Nutrients and Plant Growth
摘要
Abstract
[Objective]This study aimed to clarify the effects of poplar-crop intercropping and fertilizer application on soil nutrients and plant growth.[Methods]A pot experiment was conducted to investigate soil nutrients and plant growth under three planting patterns:poplar(Populus deltoides)monoculture,wheat(Triticum aestivum)/soybean(Glycine max)monoculture,and poplar-wheat/soybean intercropping.Each planting pattern was subjected to three fertilizer application rates(10,5,and 0 g of compound fertilizer per pot).[Results]Fertilizer application reduced soil pH by 0.1-0.4 units.Under the same planting pattern,the concentrations of soil nitrate nitrogen(NO3--N),available phosphorus(AP),and available potassium(AK)increased with increasing fertilizer application rate.In addition,at the same fertilizer application rate,soil AP and AK concentrations in the poplar monoculture and poplar-crop intercropping systems were more than 80%and 20%higher,respectively,than those in the wheat/soybean monoculture systems.In both monoculture and intercropping systems,crop yield and poplar growth were highest under the 10 g·pot-1 fertilization treatment,followed by the 5 g·pot-1 fertilization treatment,and lowest under the no-fertilization treatment.At the same fertilizer application rate,crop yield and poplar growth in the poplar-crop intercropping system were approximately 50%and 10%lower,respectively,than those in the corresponding crop and poplar monoculture systems.However,the land equivalent ratio of the poplar-crop intercropping system was greater than 1,indicating higher overall productivity than either poplar or crop monoculture.[Conclusion]Poplar planting promoted soil phosphorus activation and potassium release,thereby increasing soil AP and AK concentrations.Fertilizer application enhanced crop yield and poplar growth.The fertilizer requirement of the poplar-crop intercropping pattern was greater than that of either poplar or crop monoculture.Overall,poplar-crop intercropping was conducive to improving integrated land productivity.关键词
林农复合经营/杨树/间作/单作/施肥/生产力Key words
agroforestry/poplar/intercropping/monoculture/fertilizer application/productivity分类
农业科技引用本文复制引用
刘晓朋,徐成,唐罗忠..杨树农作物间作与施肥对土壤养分和植物生长的影响[J].生态环境学报,2026,35(9):1402-1411,10.基金项目
国家重点研发计划项目(2021YFD2201202) （2021YFD2201202）
