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《China Rice》 2017-04
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Effects of Ear Fertilizer in Diffferent Leaf Age on Yield and Nitrogen Use Efficiency of Indica rice

LI Guiyong;HE Qinglan;ZHU Jianyu;WANG Qiuying;YE Jinhua;XIA Qiongmei;LONG Ruiping;ZHU Haiping;DENG An-feng;YANG Congdang;Food Crops Research Institute, Yunnan Academy of Agricultural Sciences;Yongsheng City Agricultural Technology Extension Center;Binju Town Comprehensive Agricultural Service Center;Sanchuan Town Comprehensive Agricultural Service Center;  
In order to reduce the amount of nitrogen fertilizer and improve its use efficiency, the effects of ear fertilizer in different leaf age on yield and nitrogen use efficiency of indica rice was studied without the application of base fertilizer and tiller fertilizer. The results showed that, for 5 leaf stage(60%)and 3 leaf stage(40%)poured nitrogen fertilizer(T3, 120 kg/hm~2), 4 poured leaf stage(100%)nitrogen fertilizer(T4, 120 kg/hm~2), 4 leaf stage(60%)and 2 leaf stage(40%) poured nitrogen fertilizer(T5, 120 kg/hm~2), 5 poured leaf stage(100%)nitrogen fertilizer(T2, 120 kg/hm~2), four times average application of nitrogen fertilizer(CK, 195 kg/hm~2), the rice yields were 12.90, 12.74, 12.69, 12.32, 13.25 t/hm~2, nitrogen contribution rate were 17.71%, 16.58%, 16.25%, 13.77%, 19.86%, and agronomic nitrogen utilization rate were 18.08, 16.73, 16.33, 13.26, 13.24 kg/kg, respectively. Compared with CK, the amount of nitrogen fertilizer of the treatment with 5 leaf stage(60%)and 3 leaf stage(40%)poured nitrogen fertilizer was reduced by 38.46%, but the grain yield and nitrogen use efficiency difference was not significant.
【Fund】: 农业部公益行业(农业)科研专项(201303102;20130129);; 国家重点研发计划(2016YFD0300506);; 国家重点基础研究发展计划(“973”计划)(2013CB835200);; 云南省科技惠民专项(2016RA001);; 云南省现代农业水稻产业技术体系
【CateGory Index】: S511.21
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1 MA Xin;YANG Yan-ming;LIU Zhi-lei;SUN Yan-kun;YU Cai-lian;PENG Xian-long;College of Resources and Environment, Northeast Agricultural University;Institute of Chemical and Environmental Engineering, Harbin University of Science and Technology;Collaborative Innovation Center of Grain Production Capacity Improvement in Heilongjiang Province;;Yield increasing effect of mechanical topdressing of polymer-coated urea mixed with compound fertilizer in cold area rice[J];植物营养与肥料学报;2017-04
2 MU Guiting;FENG Yuehua;LI Jie;HUANG Yougang;XU Guiling;Ye Yong;Guan Zhengce;ZHANGg Jiafeng;TANG Xin;Guizhou University;;Study on Recommend Fertilization Dosage of Rice at Village-region in Mountainous Area Based on GIS[J];中国稻米;2017-04
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