摘要
在缺锌的砂姜黑土上研究锌对玉米增产效应的田间试验中发现，在严重渍涝高温时，锌有显著的增强玉米耐涝抗渍的作用。其机理与锌能明显降低植株体内氮磷含量，提高钾素含量，从而增强玉米的抗渍涝与高温的能力有关。统计结果表明，玉米秸杆中氮磷含量占整株氮磷含量的百分数与死亡率呈显著的正相关，而秸杆中的含钾量与死亡率呈一定的负相关。
Effect of zinc on increasing production of corn in Shajiang BlackSoil whichis deficlent in zinc was studied.The results of the field experiment showed thatzinc had a sinnificant effect on increasing waterlogging resistance of corn as a se-rious waterlogging together with a high temperature occurred.The mechanism ismaybe that zinc can markedly reduce the nitrogen and phosphorus contents incorn while raising the potassium content in the plant,thus the waterlogging andhigh temperature resistance of corn is improved.Statistic analysis revealed thatthe death rate of corn correlated positively with the rates of the nitrogen andphosphorus contents in corn straw to that in the whole plant,but negativelywith potassium content in corn straw to a certain degree.
出处
《长江流域资源与环境》
CAS
CSCD
1994年第1期29-34,共6页
Resources and Environment in the Yangtze Basin
基金
中科院资源生态环境网络研究课题
关键词
锌
玉米
耐涝抗渍
机理
zinc,corn,waterlogging, mechanism
