植物营养与肥料学报2010,16(6)：1341-1350 Plant Nutrition and Fertilizer Science
不同生育期类型梗稻品种垩白性状对施氮
水平的响应
马群"，顾海永3，张庆"，李雪侨"，殷春渊"，魏海燕2，戴其根12，张洪程1.2.
（1扬州大学江苏省作物遗传生理重点实验室，江苏扬州225009； 2扬州大学农业部长江流域稻作技术创新中心，江苏扬州225009；
3广东省农业科学院水稍研究所，广东广州510640）
摘要：以长江中下游地区5种生育类型中有代表性的56个梗稍品种为供试材料，研究了4种施氮水平下梗稍品种至白性状的变化规律，并对其要白变化的氮素敏感性及其品种类型特征进行了聚类分析和筛选评价。结果表明，在施N0～300kg/hm范围内，随着氮肥水平的增加，各品种类型的至白度呈现不同程度的上升趋势，但垩白米率的变化则因品种的生育期类型不同而异。其中，中梗品种在高氮水平下的率白米率有所增加，而晚梗品种则有所下降。根据梗稍至白度对氮肥响应的敏感程度，供试品种可分为迟饨型、中间型和敏感型3种；并据此推荐了利于生产实践中改善外观品质的两类品种：一类是垩白度较低且在各氮肥水平下表现比较稳定的品种，另一类在高氮
肥水平下垩白度较高，但其对氮肥响应较为敏感，通过适当减少施氮量也能获得较好外观品质。关键词：水稻；生育类型；氨肥水平；睾白
中图分类号：S511.062
文献标识码：A
文章编号：1008-505X(2010)06-134110
Responsesofgrainchalkytraitstonitrogenapplicationlevels
fordifferentgrowth-periodJaponica cultivars
MA Qun', GU Hai-yong'->, ZHANG Qing"', LI Xue-qiao', YIN Chun-yuan', WEI Hai-yan'?
DAI Qi-gen'-, ZHANG Hong-cheng-.
(1 Key Laboratory of Crop Genetics and Physiology of Jiangsu Prorince/Yangzhou Unitersity, Yangzhou Jiangsu, 225009, China; 2 Innovation Center of Rice Cultiration Technology in Yangtze Valley, MOA/Yangzhou University, Yangzhou, Jiangsu 225009, China;
3 Institute of Rice Science, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China)
Abstract: The appearance quality is one of the important aspects of rice quality. Nitrogen is the indispensable nu-trient to rice production although over application of N could cause so many environment problems. The effect of ni-trogen application rates on appearance quality is varied in different rice cultivars, especially in different genotypes. Therefore it is necessary to identify the responses of grain chalky traits to nitrogen application levels for different growth-period Japonica cultivars. In this research, a field experiment with four nitrogen levels (zero, low, medium and high) was carried out. About 56 Japonica rice cultivars which are representative in the region of Yangtze River were adopted to investigate the differences of the rice types under the four nitrogen levels. The chalkiness degree was clustered and selected in term of their different responses to the nitrogen application levels. The main results are as follows: 1) In therange ofO-300 kg/ha nitrogen fertilization, the effects of nitrogen application rates on rice chalkiness rate are genotype-dependent, with the increasing chalky-grain rate in high level for medium growth-peri-od Japonica cultivars, while the dropping one for late growth-period Japonica cultivars. With the level of nitrogen
收稿日期：2010-02-01
接受日期：2010-04-17
基金项目：国家"十一五"科技支撑计划重大项目（2006BAD02A03）：国家自然科学基金项目（30971732)：江苏省环洪泽湖生态农业生物技术
重点实验室开故课题（HZHL0806）；农业部专项"超级配套裁培技术开发与技术集皮"资助。
作者简介：马群（1981），女，江苏高邮人.博士研究生，主要从事水稻栽培、生理研究。E-mail：yzumq@126.com
*通讯作着Tel；0514-87979220，E-mail；hczhang@ yzu.eda.cn 万方数据