施硅量对粳稻品种武育粳3号产量和品质的影响  

Effects of Silicon Fertilizer Rate on Yield and Quality of japonica Rice Wuyujing 3

作　　者：张国良[1] 戴其根[1] 王建武[2] 张洪程[1] 霍中洋[1] 凌励[2] 王显[1] 张军[1] 

机构地区：[1]扬州大学江苏省遗传生理重点实验室 [2]江苏农垦集团有限公司,江苏南京210008

出　　处：《中国水稻科学》2007年第3期299-303,共5页Chinese Journal of Rice Science

基　　金：国家自然科学基金资助项目(30571090);国家科技攻关计划重大项目(2004BA520A03);国家科技支撑计划资助项目(2006BAD02A03);江苏省农业三项工程项目[SX(010)2000-012052];安徽省水稻遗传育种重点实验室开放基金资助项目(2006003)

摘　　要：以迟熟中粳稻武育粳3号为材料,研究了不同硅肥水平对粳稻产量和稻米品质的影响。结果表明,大田基施硅肥0-450 kg/hm2范围内,随着施硅量的增加,穗数、每穗粒数、千粒重、产量先增后降,精米率、回复值有增加的趋势,整精米率显著增加,RVA谱曲线降低,直链淀粉含量、峰值黏度、热浆黏度、冷胶黏度、到达峰值黏度时间呈下降的趋势,消减值则先下降然后上升。施硅对出糙率、透明度无明显影响。适量施硅可以降低垩白米率、垩白大小和垩白度,改善稻米的外观品质。施硅能提高稻米胶稠度、崩解值,有提高稻米蛋白质含量的趋势。综合产量和品质性状,以施硅肥225 kg/hm2的处理较好。The effects of silicon fertilizer rates on yield and quality of rice grain were studied with a mid-season japonica rice cultivar Wuyujing 3. With the increase of Si application rate, number of panicles per plant, number of grains per panicle, 1000- grain weight and grain yield increased firstly and then decreased within the range of Si applicationrate of 0-450 kg/hm^2 , while milled rice rate and consistence showed a tendency to increase, and head rice rate increased significantly. The curves of RVA profile decreased, and amylose content, peak viscosity, hot viscosity, cool viscosity, peak time had the trend of descent, while setback decreased firstly and then increased. Meanwhile, brown rice rate and transparency had no obvious difference in the treatments, but proper Si rates decreased the chalky grain rate, chalkiness area and chalkiness, and increased protein content, gel consistency and breakdown. Considering the grain yield and quality together, 225 kg/hm^2 of Si fertilizer rate was suitable.

关 键 词：硅 粳稻 稻谷产量 品质性状 淀粉黏滞性(RVA谱) 

分 类 号：S511.22[农业科学—作物学]