小麦晚春冻害恢复措施效应研究  

A Study on the Effect of Recovery Measures for Late Spring Freezing Injury of Wheat

作　　者：王荣成 张睿[2] 姚广平 冯海平[4] 苏红 李婷 翟萍[7] 

机构地区：[1]陕西省农业技术推广总站,陕西西安710003 [2]西北农林科技大学农学院,陕西杨凌712100 [3]陕西省三原县农业科学技术中心,陕西三原713800 [4]陕西省宝鸡市陈仓区农技中心,陕西虢镇721300 [5]陕西省高陵县农技中心,陕西高陵710200 [6]陕西省渭南市临渭区农技中心,陕西渭南714000 [7]陕西省岐山县农技中心,陕西岐山722400

出　　处：《西安文理学院学报（自然科学版）》2012年第2期43-47,共5页Journal of Xi’an University(Natural Science Edition)

基　　金：陕西省小麦高产创建项目;陕西省小麦产业体系项目

摘　　要：以小麦为材料,在拔节中期低温过后采用不同营养型调节剂叶面喷施或追肥等处理,研究晚春低温冻害对小麦产量及其结构的影响,为冻害恢复技术措施提供理论依据.结果表明叶面喷施KH2PO4、尿素、481等调节剂和追施尿素可以缓解冻害对小麦的影响,有显著的增产效果.喷KH2PO4增产6.0%;喷尿素水增产4.4%;喷481或其他营养型调节剂增产4.9%,追尿素增产4.6%.处理可以提高穗粒数3.6%～5.7%,提高千粒重1.8%～3.9%,降低不孕小穗数19.5%～27.7%.This study addresses the influence of late spring freezing injury on wheat yield and its structure and is expected to provide the theoretic basis of recovery techniques for freezing injury.The methods of foliage spray or topdressing with regulators of various nutrition types were adopted in the middle jointing stage after low temperature.The results show that foliage spray with regulators such as KH_2PO_4,Urea,481 and Urea topdressing can relieve the influence of freezing injury on wheat and significantly increase the yield.Foliage spray of KH_2PO_4,Urea,and 481 or other types of nutrition regulators will result in a yield increase by 6.0%,4.4%,and 4.9% respectively.Urea topdressing can increase yield by 4.6%.Treatments can help increase grains per spike by 3.6%～5.7%,1000-grain weight by 1.8%～3.9%,and decrease sterility spike number by 19.5%～27.7%.

关 键 词：小麦 产量 冻害 穗粒数 千粒重 

分 类 号：S512.1[农业科学—作物学]