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秸秆覆盖对旱地冬小麦灌浆动态及产量的影响
引用本文:刘婷,贾志宽,张睿,郑甲成.秸秆覆盖对旱地冬小麦灌浆动态及产量的影响[J].干旱地区农业研究,2010,28(2):34-37.
作者姓名:刘婷  贾志宽  张睿  郑甲成
作者单位:西北农林科技大学干旱半干旱地区农业研究中心,农业部旱地作物生产与生态重点开放实验室,陕西,杨凌,712100
基金项目:“十一五”国家科技支撑课题“农田集雨保水关键技术研究”(2006BAD29B03);;十一五国家科技支撑课题“节水共性技术研究”(2007BAD88B10)
摘    要:为了研究不同秸秆覆盖量处理下冬小麦籽粒灌浆的动态及产量变化,在渭北旱塬设置秸秆覆盖量9000 kg/hm2(SM9)6、000 kg/hm2(SM6)3、000 kg/hm2(SM3)及无覆盖(CK)4个处理进行旱地冬小麦栽培试验。结果表明,在灌浆渐增期,不同处理的灌浆速率表现为:CKSM3SM6SM9;速增期和缓增期灌浆速率大小为:SM3SM6CKSM9。SM9灌浆持续时间长,较CK多6 d,SM6、SM3与CK灌浆持续时间近乎一致。在灌浆速增期和缓增期,覆盖处理的灌浆贡献率均大于CK,在渐增期则均小于CK。相对于CK而言,覆盖一年后3 000 kg/hm2处理提高了冬小麦产量,较CK显著增产5.9%,且速增期和缓增期灌浆速率保持较高水平。

关 键 词:秸秆覆盖  灌浆动态  冬小麦  渭北旱塬  

Effect of straw mulching on grain filling dynamics of winter wheat and yield in dryland
LIU Ting,JIA Zhikuan,ZHANG Rui,ZHENG Jiacheng.Effect of straw mulching on grain filling dynamics of winter wheat and yield in dryland[J].Agricultural Research in the Arid Areas,2010,28(2):34-37.
Authors:LIU Ting  JIA Zhikuan  ZHANG Rui  ZHENG Jiacheng
Institution:Research Center of Agriculture in the Arid and Semiarid Areas;Northwest A&F University;Key and Open Laboratory of Crop Production and Ecology in Arid Areas;Ministry of Agriculture;Yangling;Shaanxi 712100;China
Abstract:A field experiment including straw mulching in different amounts was set in Weibei Loess Plateau of Shaanxi Province to make clear the effect of straw mulching on grain filling and yield of winter wheat from Sept.2007 to Jun.2008.The quantity of straw mulching had four levels of 9 000 kg/hm2 mulching(SM9),6 000 kg/hm2 mulching(SM6),3 000 kg/hm2 mulching(SM3)and non-mulching(CK). The results indicated that in the slightly increasing stage,the grain filling rate of four treatments decreased gradually in the f...
Keywords:straw mulching  grain filling dynamics  winter wheat  Weibei dryland  
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