施氮对不同株型水稻品种根系还原力及产量的影响
Effect of Nitrogen Application on Root Reductivity and Yield of Rice Varieties with Different Plant Types
隋亚云 1全革 1王文东 1宋晓波 1吕小红1
作者信息
- 1. 辽宁省盐碱地利用研究所,辽宁 盘锦 124010
- 折叠
摘要
以穗型直立的紧凑型水稻品种沈农07425和穗型弯曲的松散型水稻品种秋光为材料,在不同氮素水平下研究两种株型水稻品种的根系还原力和产量.结果表明,紧凑型沈农07425与松散型秋光的根系还原力均遵从N3＞N2＞N1的关系,即随着供氮水平的增加两个品种水稻根系还原力也随之增加,施用氮肥能提高根系还原力.灌浆前根系还原力受品种株型与施氮水平互作影响较大,齐穗后受品种株型影响较大.两个品种的产量均随着施氮量的增加而显著增加,且三个施氮处理的产量显著高于PK处理,极显著高于CK处理.产量受施氮水平影响达到极显著水平,受品种株型与施氮水平的交互作用影响显著.进一步相关分析表明,拔节孕穗期的根系还原力与产量极显著正相关,可以作为筛选高产水稻品种的指标.
Abstract
Using the compact rice variety Shennong-07425 with upright panicles and the loose rice variety Qiuguang with curved panicles as materials,the root reductivity and yield of two rice plant types were studied under different nitrogen levels.The results obtained were described as follows.The root reductivity of both varieties followed a relationship of N3＞N2＞N1 indicating that the root reductivity of both varieties increased with the raise of nitrogen application.Apply nitrogen fertilizer can promote the root reductivity.The root reductivity before grout was greatly affected by the interaction between the variety plant type and nitrogen application,while after full heading it was greatly affected by the variety plant type.The yield of both varieties significantly increased with the increase of nitrogen application,and the yield of the three nitrogen application treatments was significantly higher than that of the PK treatment,and extremely significantly higher than that of the CK treatment.The yield was significantly affected by the nitrogen application,and was significantly influenced by the interaction between plant type and nitrogen application.Further correlation analysis showed that the root reductivity during the jointing and booting stage was highly significantly positively correlated with yield,and can be used as an indicator for screening high-yielding rice varieties.
关键词
氮/株型/根系还原力/产量Key words
Nitrogen/Plant type/Root reductivity/Yield引用本文复制引用
基金项目
辽宁省博士科研启动基金(20141169)
辽宁省科技厅重大攻关项目(2008201002)
出版年
2023
NETL
NSTL
维普
万方数据