黑龙江农业科学Issue(3)：55-60,6.DOI:10.11942/j.issn1002-2767.2026.03.0055
豫南稻区再生稻茬青饲作物混播对饲草产量及土壤理化性质的影响
Effects of Sowing Date and Mixed Cropping Patterns of Forage Crops in Ratoon Rice Stubble on Forage Yield and Soil Physicochemical Properties in Southern Henan
摘要
Abstract
In order to address the dual challenges of underutilized ratoon rice stubble and soil degradation in winter fallow fields within southern Henan's rice region,this study conducted a field experiment to systematically evaluate the synergistic effects of sowing dates(10 days before harvest,5 days before harvest,and immediately post-harvest of ratoon rice)and planting patterns on forage yield and soil physicochemical properties.The experimental treatments included four grass-legume intercropping systems(rye+common vetch,rye+pea,barley+common vetch,barley+pea)alongside their corresponding monocultures.Results demonstrated that intercropping significantly enhanced both forage yield stability and soil fertility buffering capacity.Compared with monocultures,intercropping systems increased average fresh forage yield by 19.7％.Furthermore,a clear temporal trend was observed,forage yield declined progressively with delayed sowing,indicating that earlier establishment was critical for maximizing biomass accumulation.Soil nutrient monitoring revealed that,despite general nutrient depletion driven by crop growth across all treatments,intercropping-leveraging biological nitrogen fixation and residue complementarity-maintained post-harvest soil total nitrogen,total phosphorus,and organic matter contents at levels 5.6％,6.9％,and 5.3％higher,respectively,than those in monoculture plots.Integrating yield performance with soil health metrics,no-till relay intercropping of"rye+common vetch"sown 10 days prior to ratoon rice harvest was identified as the optimal strategy.This approach not only achieved an annual fresh forage yield exceeding 25 t·ha-1but also established a sustainable paradigm that synergizes land utilization with soil conservation.关键词
再生稻/青饲作物/播期/饲草产量/土壤养分Key words
ratoon rice/forage crop/sowing date/fresh forage yield/soil nutrient引用本文复制引用
赵海英,李歌星,谷孟轩,丰大清,余贵龙,付强..豫南稻区再生稻茬青饲作物混播对饲草产量及土壤理化性质的影响[J].黑龙江农业科学,2026,(3):55-60,6.基金项目
河南省农业产业技术体系建设专项资金(Z2012-04-01) （Z2012-04-01）
河南省水稻产业技术体系(HARS-22-03) （HARS-22-03）
信阳市科技攻关项目(20250075). （20250075）
