锌对冬小麦生长和氮素利用的影响  

Effects of ZnSO_4 Foliar Spray on Growth and Nitrogen Uptake of Winter Wheat

作　　者：江荣风[1] 张起刚[1] 

机构地区：[1]北京农业大学植物营养系,北京100094

出　　处：《中国农业大学学报》1995年第S2期77-80,共4页Journal of China Agricultural University

摘　　要：本文在田间条件下采用小区和^(15)N 标记微区试验相结合的方法,研究了细沙土缺锌喷施锌对冬小麦生长和氮素利用的影响。试验结果表明:喷施锌肥,冬小麦叶片中,锌浓度由14.6mg·kg^(-1)增加到30.8 mg·kg^(-1),产量显著提高;促进了冬小麦对氮素的吸收,吸氮量显著增加,并且主要贮存于籽粒中;冬小麦对^(15)N 标记的基施氮肥利用率增加,氮肥损失率减少。A plot experiment and micro-plot experiment were conducted under field condition to study the effect of ZnSO_4 foliar spray on the growth and nitrogen uptake in fine sandy soil by ^(15)N tracer tech- nigue.The result showed that the Zn content in leaf of winter wheat increased from 14.6 mg·kg^(-1)to 30.8 mg·kg^(-1)by Zn foliar application;Zn Spray promoted the growth and N uptake of the winter wheat and the recovery of nitrogen fertilizer by plant.

关 键 词：¹⁵N 标记 冬小麦 锌 氮素 

分 类 号：S512.11[农业科学—作物学]