石灰氮对连作花生生理特性及产量的影响  

Effects of Applying Lime Nitrogen on Physiological Characteristics and Yield of Continuous Cropping Peanut

作　　者：刘辰[1] 孙奇泽[1] 高波[1] 孙莲强[1] 顾学花[1] 张倩[1] 崔莎莎[1] 李向东[1] 

机构地区：[1]山东农业大学农学院/作物生物学国家重点实验室,山东泰安271018

出　　处：《花生学报》2015年第2期24-29,共6页Journal of Peanut Science

基　　金：国家"十二五"科技支撑计划项目(2014BAD11B04-2);国家自然科学基金资助项目(30840056;31171496);山东省现代农业体系花生创新团队首席专家专项基金(SDAIT-05-022-01)

摘　　要：在池栽条件下,研究了施用石灰氮对连作花生生理特性及产量的影响。结果表明,合理施肥可以缓解连作对花生生长发育以及产量的不良影响,石灰氮的缓解效果明显优于常规速效化肥。石灰氮促进了连作花生主茎和侧枝的生长,提高了各时期叶片叶绿素含量以及净光合速率,增加了各生育时期叶片的硝酸还原酶活性和根系活力;提高了连作花生的出苗率、单株结果数、果重和出仁率,明显增加了荚果产量。在本试验条件下,以施用225kg/hm2石灰氮处理效果最好。Pool experiment was carried out to study the effects of applying lime nitrogen on physi-ological characteristics and yield of continuous cropping peanut.The results showed that rational ap-plication of fertilizer can relieve the harmful effects of continuous cropping on peanut growth and yield, and the mitigation effects of lime nitrogen were superior to conventional quick-acting chemical fertilizer.Applying lime nitrogen facilitated the growth of main stem and lateral branch of continuous cropping peanut, improved the chlorophyll content and net photosynthetic rate, and increased NR ac-tivities and root vigor in different growth stages.In addition, lime nitrogen improved emergence rate, pods per plant, weight per pod and shelling rate of continuous cropping peanut, and consequently in-creased the pods yield.Under the condition of this test, the best treatment was 225 kg /hm2 lime ni-trogen application.

关 键 词：石灰氮 花生 连作 生理特性 产量 

分 类 号：S565.2[农业科学—作物学] S143.14