摘要
以超级粳稻‘新稻18号’为试验材料,大田条件下,研究不同施氮量(0、232.5、255.0、277.5、300.0、322.5和345.0kg/hm2纯氮水平)对水稻产量、品质及氮肥吸收利用效率的影响,以明确高产、优质和氮高效协同的适宜氮素水平。结果表明,随氮素水平提高,水稻产量、稻米品质和氮肥吸收利用效率均呈先增后降趋势。施氮量为255.0kg/hm2纯氮处理下,产量最高为9 878.11kg/hm2,稻米的糙米率、精米率和整精米率较高,分别为84.81%、72.85%和66.94%,垩白粒率和垩白度较低,分别10.00%和2.86%,氮肥吸收利用效率较高,为41.34%。低氮肥和高氮肥处理,产量、品质和氮肥利用效率相对较低。说明,在适宜的氮肥水平下,水稻高产、优质和氮高效可达到协同一致。
In order to achieving high yield,good quality and high N use efficiency in rice,taking super Japonica-rice variety‘Xindao 18＇as material,the effects of different N application（0,232.5,255.0,277.5,300.0,322.5and 345.0kg/hm^2）on rice yield and quality,use efficiency of N fertilizer were studied in the field experiment,and N level of cooperation in high yield,superior quality and high nitrogen use efficiency was made clear for super Japonica-rice in ‘Xindao 18＇in 2011 on the farm of Xinxiang Academy of Agricultural Sciences Henan province,China.The results showed that rice yield,quality and N use efficiency increased at first,then decreased with the increasing application of N fertilizer.Under the treatment of N level of 255.0kg/hm^2,the highest yield was 9 878.11kg/hm^2.,the percentages of brown rice,milled rice and head rice were higher,which was 84.81%,72.85% and66.94%,respectively.Chalky rice rate and chalkiness were lower.The N use efficiency was 41.34%and much higher,the yield,quality and N use efficiency were lower under condition of high and low N level.So the high yield,superior quality and high N use efficiency in rice could be cooperative and cnsistent at proper N level.
出处
《西北农业学报》
CAS
CSCD
北大核心
2015年第1期68-72,共5页
Acta Agriculturae Boreali-occidentalis Sinica
基金
河南省现代农业产业技术体系资助(S2012-04-G01)
河南省省院科技合作专项资助(122106000010)
关键词
水稻
产量
品质
氮肥利用效率
Rice
Yield
Quality
Ntrogen（N）use efficiency
