摘要
为研究有机肥替代化肥对马铃薯产量、氮肥利用和土壤养分的影响,设置不施肥(T1)、100%复合肥(T2)、75%复合肥+25%有机肥(T3)、50%复合肥+50%有机肥(T4)、25%复合肥+75%有机肥(T5)、100%有机肥(T6)6个处理进行马铃薯小区试验。结果表明:75%复合肥+25%有机肥处理的马铃薯产量以及茎叶、薯块的氮积累量最高,较100%复合肥处理分别提高3.59%、78.60%和29.37%;其茎粗、株高、单株茎叶重、单株薯块重和单株薯块数等产量构成因素指标也均高于其他处理;有机肥替代处理的氮素吸收效率、氮肥利用率和氮肥偏生产力均高于复合肥处理;各处理间土壤养分没有显著性差异。
In order to study the effects of organic fertilizer substituting chemical fertilizer on potato yield,nitrogen utilization efficiency and soil nutrients,six treatments were set up in a plot experiment:no fertilization(T1),100%compound fertilizer(T2),75%compound fertilizer+25%organic fertilizer(T3),50%compound fertilizer+50%organic fertilizer(T4),25%compound fertilizer+75%organic fertilizer(T5),100%organic fertilizer(T6).The results showed that the treatment of 75%compound fertilizer+25%organic fertilizer had the highest yield and maximum nitrogen accumulation in the stems,leaves and tubers,which was increased by 3.59%,78.60%and 29.37%,respectively compared with 100%compound fertilizer treatment;on the other hand,the yield component indices such as stem diameter,plant height,stem and leaf weight per plant,tuber weight per plant and the number of tubers per plant were all higher than those of the other treatments.The nitrogen absorption efficiency,nitrogen use efficiency and nitrogen partial productivity of the organic fertilizer substitution treatments were higher than those of the compound fertilizer treatment.There were no significant differences in soil nutrients between the treatments.
作者
黄艳岚
张超凡
张道微
董芳
张亚
王飞
魏云霞
HUANG Yan-lan;ZHANG Chao-fan;ZHANG Dao-wei;DONG Fang;ZHANG Ya;WANG Fei;WEI Yun-xia(Hunan Crop Research Institute,Hunan Academy of Agricultural Sciences,Changsha 410125,PRC;Agriculture and Rural Bureau of Suxian District in Chenzhou,Chenzhou 423000,PRC;Agriculture and Rural Bureau of Liling,Liling 412200,PRC)
出处
《湖南农业科学》
2022年第6期25-28,共4页
Hunan Agricultural Sciences
基金
湖南省财政重大专项(湘财农指〔2020〕22号,湘财农指〔2021〕23号)。
关键词
有机肥替代
马铃薯产量
氮肥利用
土壤养分
organic fertilizer substitution
potato yield
nitrogen utilization
soil nutrient
