减量施肥对金花菜-水稻轮作系统中产量和土壤养分的影响  

Effects of Nutrient Coordination on Yield and Soil Nutrients in a Burclover-rice Rotation System

作　　者：贾雪杰 游明鸿[2] 李达旭[2] 雷雄[2] 任小英 熊晓兰 杜静 陈丽敏 董志晓 张建波[2] 马啸[1] JIA Xue-jie;YOU Ming-hong;LI Da-xu;LEI Xiong;REN Xiao-ying;XIONG Xiao-lan;DU Jing;CHEN Li-min;DONG Zhi-xiao;ZHANG Jian-bo;MA Xiao(College of Grassland Science and Technology,Sichuan Agricultural University,Chengdu,Sichuan Province 611130,China;Sichuan Academy of Grassland,Science,Chengdu,Sichuan Province 611731,China;Aba Forestry and Grassland Bureau,Aba,Sichuan Province 624099,China;Hong Yuan County Bureau of Science,Technology and Agriculture and Animal Husbandry,Aba,Sichuan Province 624603,China)

机构地区：[1]四川农业大学草业科技学院,四川成都611130 [2]四川省草原科学研究院,四川成都611731 [3]阿坝州林业和草原局,四川阿坝624099 [4]红原县科学技术与农业畜牧局,四川阿坝624603

出　　处：《草地学报》2023年第3期876-883,共8页Acta Agrestia Sinica

基　　金：国家现代农业产业技术体系资助(CARS-34);四川省饲草创新团队(SCCXTD-20-14);肉牛创新团队(SCCXTD-20-13)资助。

摘　　要：为探究轮作与减量施肥对轮作系统作物产量及土壤养分影响,优化金花菜(Medicago polymorpha)-水稻(Oryza sativa)轮作体系下施肥量,本研究采用双因素完全随机试验设计,设置“水稻连作(高肥)”“金花菜(不施肥)+水稻(中肥)”“金花菜(施肥)+水稻(中肥)”“金花菜(不施肥)+水稻(低肥)”和“金花菜(施肥)+水稻(低肥)”5种处理。结果表明减量施肥处理轮作系统产量及土壤养分差异较大,金花菜(施肥)+水稻(低肥)处理水稻产量较同年其他处理最高,有机质较其他处理整体显著增加14.81%~38.13%,土壤pH较其他处理降低2.34%~5.03%,土壤氮素含量较其他处理也显著增加0.80%~35.66%(P<0.05)。因此,轮作减量施肥可有效提高轮作系统产量与土壤养分。To explore the effects of crop rotation combined with reduced fertilization on crop yield and soil nutrients in the rotation system,and to optimize fertilizer application in rotation system of burclover(Medicago polymorpha)-rice(Oryza sativa),this study adopted the double-factor completely randomized design,and set up five treatments,including"continuous cropping rice(high fertilizer)""burclover(no fertilizer)+rice(middle fertilizer)""burclover(fertilizer)+rice(middle fertilizer)""burclover(no fertilizer)+rice(low fertilizer)",and"burclover(fertilizer)+rice(low fertilizer)".The results showed that there were significant differences in yield and soil nutrients with the reduced fertilizer in rotation system.The highest rice yield in the treatment of“burclover(fertilizer)+rice(low fertilizer)”was higher than the other treatments in the same year,with organic matter significantly increased by 14.81%~38.13%,soil pH reduced by 2.34%~5.03%,and soil nitrogen content significantly increased by 0.80%~35.66%(P<0.05).Thus,reducing fertilizer application in crop rotation can effectively improve yield and soil nutrients in crop rotation systems.

关 键 词：金花菜-水稻轮作 施肥 产量 土壤养分 

分 类 号：S157.41[农业科学—土壤学]