Effects of Dry Land Regulation and Bilateral Deep Fertilization on Ridge on Yield and Quality of Rice under Nitrogen Fertilizer Operation Model
CHEN Liqiang;ZHAO Haicheng;HE Chen;ZHOU Jian;Lü Yandong;LI Hongyu;YIN Dawei;ZHENG Guiping;College of Agronomy,Heilongjiang Bayi Agricultural University/Key Laboratory of Crop Genetics Breeding and Cultivation,Heilongjiang Provincial Department of Education;
A randomized block design of two factors was adopted. Two tillage methods [dry land regulation and bilateral deep fertilization on ridge( L),conventional planting( P) ]and three nitrogen fertilizer operation nitrogen models [basal application of panical nitrogen fertilizer( F1),basal application of regulating nitrogen fertilizer( F2),conventional fertilization( F3) ] were used to study the impact of bilateral deep fertilization on ridge on rice yield and quality under nitrogen application models,so as to provide theoretical foundation and technical guidance for rational nitrogen application under dry land regulation and bilateral deep fertilization on ridge. The results showed that,compared to P treatment,L treatment enhanced rice yield,and realized an increase rate of 19. 66%,among which,LF1 treatment had the maximum yield of 11 735. 40 kg/ha,followed by LF3 treatment. This was chiefly because L treatment improved relative traits of rice yield,among which the impact on branch number,primary and secondary branch set-ting rate,secondary 1 000-grain weight,leaf area index in grain-filling stage and maturation stage,and SPAD value reached a significant or remarkably significant level. Compared with P treatment,L treatment increased rice processing,appearance,nutrition and eating quality,among which the impact on head rice rate and comprehensive taste grading reached a significant or remarkably significant level. In general,LF1 treatment had the best effect. For F1 treatment,rice processing quality was the best,appearance and eating quality as well as yield were better; for F2 treatment,comprehensive taste reached the highest grade,and appearance quality was better,but rice yield was the lowest; for F3 treatment,rice yield reached the best,but comprehensive taste and the appearance quality were poorer. Taking all into consideration,LF1 treatment had the best performance,and could increase the yield and enhance rice quality.
【Fund】： 国家重点研发计划项目(2016YFD0300104 2017YFD0300502-6 2016YFD0300504 2015BAD23B05-08);; 黑龙江农垦总局科技攻关项目(HNK135-02-02 HNK125B-08-21A);; 黑龙江八一农垦大学创新人才项目(CXRC2017001);黑龙江八一农垦大学博士科研启动金项目(XDB-2016-02);黑龙江八一农垦大学研究生创新科研基金项目(YJSCX2017-Y11)
【CateGory Index】： S511
【CateGory Index】： S511