施氮量与栽插密度对丰两优1号稻米品质的影响  

Effects of Amount of Nitrogen Applied and Planting Density on Grain Quality of Fengliangyou 1

作　　者：占新春[1] 周桂香[2] 吴爽[1] 张培江[1] 徐继萍[2] 

机构地区：[1]安徽省农业科学院水稻研究所,安徽合肥230031 [2]合肥丰乐种业股份有限公司,安徽合肥230011

出　　处：《杂交水稻》2006年第6期66-68,共3页Hybrid Rice

基　　金：国家粮食丰产科技工程"安徽省丰产高效技术集成研究与示范"项目资助(2004BA520A21);国家农业部"农业结构调整重大技术研究专项"(04-01-05B)

摘　　要：研究了氮肥施用量和栽插密度对丰两优1号稻米主要品质性状的影响。结果表明,随着施氮量的增加,稻米垩白粒率和垩白度增加,胶稠度变短,直链淀粉含量降低;随着栽插密度的减小,垩白粒率和垩白度降低,直链淀粉含量先增加后降低。丰两优1号优质栽培适宜施氮量为180 kg/hm2,栽插密度为19.07万穴/hm2。The indica hybrid rice Fengliangyou 1 was used to investigate the effects of amount of nitrogen applied and planting density on grain quality. The results showed that chalky rice rate and chalkiness increased, gel consistency and amylose content decreased with the increase of amount of nitrogen applied; and with the decrease of planting density chalky rice rate and chalkiness decreased, but amylose content increased first and then decreased. It was found that the proper amount of nitrogen applied was 180 kg/hm^2 and the suitable planting density was 190 700 hills/hm^2 （19.7 cm×26.7 cm） for the indica hybrid rice combination Fengliangyou 1.

关 键 词：杂交水稻 施氮量 栽插密度 稻米品质 丰两优1号 

分 类 号：S511.062[农业科学—作物学] S143.1