镁锌肥施用时期对优质软米粳稻产量及稻米中6种元素吸收的影响  

Effects of Magnesium and Zinc Microelement Fertilizer on the Yield and Accumulation of Six Elements of Japonica Rice

作　　者：李军[1] 邓先亮 朱兴敏 郭保卫[1] 魏海燕[1] 张洪程[1] LI Jun;DENG Xianliang;ZHU Xingmin;GUO Baowei;WEI Haiyan;ZHANG Hongcheng(Innovation Center of Rice Cultivation Technology in Yangtze River Valley,Ministry of Agriculture/Key Laboratory of Crop Genetics and Physiology of Jiangsu Province,Yangzhou University,Yangzhou,Jiangsu 225009,China)

机构地区：[1]扬州大学农业部长江流域稻作技术创新中心/江苏省作物遗传生理重点实验室,江苏扬州225009

出　　处：《中国稻米》2018年第4期57-63,共7页China Rice

基　　金：国家重点研发计划(2016YFD0300503);江苏省重点研发计划(BE2016344);江苏省农业科技自主创新基金(CX[12]1003-9);江苏省"农业三新"工程(SXGC[2016]213)

摘　　要：采用大田试验,以优质软米粳稻品种南粳9108和南粳505为材料,研究了不同施肥时期(基肥、分蘖肥、穗肥)追施微肥(镁、锌和镁锌混合肥)对其产量及精米中N、Mg、Zn、Mn、Ca、Cu这6种元素含量与积累的影响。结果表明,不同时期追施锌肥对稻米产量无显著影响,但显著提高了精米中6种元素的含量和积累量;随着追施锌肥时期的推迟,精米中6种元素的含量和积累量呈现下降的趋势。不同时期追施镁肥显著提高了稻米产量及精米中6种元素含量和积累量,且作穗肥追施的处理稻米产量较高;随着镁肥追施时期的推迟,精米中6种元素的含量和积累量呈上升趋势。不同时期追施镁锌混合肥显著提高了稻米产量及精米中6种元素含量和积累量,且作穗肥追施的处理稻米产量和精米中6种元素含量及积累量较高;随着锌镁混合肥追施时期的推迟,稻米产量和6种元素含量及积累量呈先下降后上升的趋势。可见,不同时期追施镁锌肥都能够提高水稻产量及增加精米中氮素和中微量元素的积累,其中,作穗肥追施在提高水稻产量和增加元素吸收上的效果最显著。A field experiment was conducted to study the effects of microelement fertilizer(Mg fertilizer,Zn fertilizer,and Mg-Zn mixed fertilizer)at different fertilizing stage(basic fertilizer,tillering fertilizer and panicle fertilizer)on yield,the content and accumulation of N,Mg,Zn,Mn,Ca and Cu in white rice of japonica rice,using Nangeng 9108 and Nangeng 505 as materials.The results showed that the effect of Zn fertilizer applied at different fertilizing stage on rice yield were not significant.The content and accumulation of the six elements in white rice were significantly increased when the Zn fertilizer was applied as basic fertilizer.With the delay of fertilizing period of Zn fertilizer,it showed a gradual downward trend.The use of Mg fertilizer simultaneously increased the rice yield,the accumulation and content of the six elements,the yield reached the highest when the Mg fertilizer was applied as panicle fertilizer.With the delay of fertilizing period of Mg fertilizer,it showed a gradually rising trend.Mg-Zn mixed fertilizer could also increased yield,the accumulation and content of six element in milled rice.The rice yield,the accumulation and content of six element reached the highest when the Mg-Zn mixed fertilizer was applied as panicle ferlilizer,with the delay of fertilizing period of the Mg-Zn mixed fertilizer,it was descend first and then rise.Magnesium and Zinc Microelement fertilizer could increase the yield and the accumulation of nitrogen and microelements.The Mg-Zn mixed fertilizer applied as panicle fertilizer would be a better method for farmers to increase the rice yield and the accumulation of nitrogen and microelements.

关 键 词：粳稻 镁锌肥 产量 矿质营养元素 

分 类 号：S511.062[农业科学—作物学]