摘要
夏大豆盛花期叶面复合喷施多效唑和N,P,K肥既可促进植株横向生长,抑制纵向生长,提高叶片叶绿素含量和光合强度;又可有效补充植株N,P营养,提高叶片和花荚N,P含量,与单喷多效唑和单喷N,P,K相比,可更有效地改善植林营养,减少花荚脱落,提高产量。经复合喷施处理夏大豆花荚脱落率51.8%,比对照降低24.3%,单株荚数增加24.0%,增产18.6%。单喷多效唑和N,P,K肥分别比对照增产11.7%和9.6%。
Spraying the mixture of paclobutrazol and nitrogen-phosphorous-potassium nu-trients on the canopy of summer soybean at the full-blossom stage could promote trans-verse development and retard vertical growth of plant,increasing the contents of chloroph-yll and photosynthesis rate of leaf,and at the same time effectively complementing inor-ganic nutr ients to plant,increasing the contents of nitrogen and phosphorous in leaf andflower-pod.Compared to the spraying sole paclobutrazol and only NPK fertilizer,thismixed spraying of both could effectively improve the plant nutrition status,decrease theshedding rate of flower-pod and result in a higher yield.The experiment showed that theflower-pod shedding rate by mixed spraying treatment was 51.8%,which was 24.3%low-er than the control(spraying water), the pod number per plant was 24.0%more thanthe control,and the yield increasing rate was18.6%.Spraying MET solely and sprayingNPK only could lead to 11.7%and 9.6%higher output respectively than the control.
出处
《河南农业大学学报》
CAS
CSCD
1994年第1期37-40,共4页
Journal of Henan Agricultural University
关键词
夏大豆
多效唑
氮磷钾肥
施肥
summer soybean
flower-pod shedding
paclobutrazol
NPK fertilizer