Screening of Early Rice with High Nitrogen Use Efficiency

doi:10.3969/j.issn.1006-8082.2019.04.011

Abstract

Abstract:

Field experiments were carried out to study the effects of different nitrogen application rate on rice yield, dry matter accumulation and nitrogen uptake of different genotypes rice varieties, 12 early rice varieties were used as materials. Three high nitrogen use efficiency varieties, Zhongjiazao17, Zhongzao 35 and Jinyou463, were selected with yield and physiological nitrogen use efficiency （PE）as the main screening indexes.

Key words: early rice, nitrogen use efficiency, quadrant analysis, screening index

摘要：

采用大田试验，选用12个生产中常用的早稻品种，进行施氮和不施氮2种处理，分析不同基因型水稻的产量、干物质积累和氮素吸收等情况，并以产量和氮素生理利用率（PE）为主要筛选指标，筛选出氮高效品种中嘉早17、中早35、金优463，并分析了氮高效早稻品种的籽粒性状。

关键词: 早稻, 氮高效, 象限分析, 筛选指标

CLC Number:

S511

张玉屏1,姜蕲琳2,朱德峰1,陈惠哲1,向镜1, 张义凯1,童未名3,朱思怡3. 早稻氮高效利用主栽品种的筛选[J]. 中国稻米, DOI: 10.3969/j.issn.1006-8082.2019.04.011 .

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