氮肥施用对杂交稻天优华占及其父母本产量与品质的影响  

Effects of yield and quality of hybrid rice Tianyou huazhan and their parents under nitrogen fertilization application

作　　者：徐春梅[1] 王丹英[1] 陈丽萍[1] 陈松[1] 朱旭东[1] 章秀福[1] 

机构地区：[1]中国水稻研究所水稻生物学国家重点实验室,浙江杭州310006

出　　处：《中国土壤与肥料》2013年第1期59-63,共5页Soil and Fertilizer Sciences in China

基　　金：十二五科技支撑计划资助项目(2011BAD16B14)

摘　　要：以超级杂交稻天优华占及其双亲(华占和天丰)为材料,采用田间试验研究不同施氮量(N用量设0、202.5 kg/hm22个水平)对子代天优华占、父本华占和母本天丰产量、品质及氮素吸收方面的影响。结果表明:施氮能使天优华占及其双亲增产的原因是有效穗的增加,子代天优华占产量较其亲本有所增加是由于有效穗数和千粒重均较高;施氮也能增加天优华占及其双亲干物质积累量;在相同处理下,茎鞘干物质输出率和贡献率最大的是子代天优华占;施氮能增加天优华占及其双亲稻米的粒长和蛋白质含量,降低垩白粒率;收获期各品种不同部位氮素累积量和施氮量显著正相关,且不同器官中氮素积累量均以天优华占显著高于华占和天丰。Effects of different nitrogen application （ N 0 and 202. 5 kg./hm2 ） on rice yield, quality and nitrogen absorption were studied using three rice cuhivars, Tianyou huazhan and their parents （Huazhan and Tianfeng） , in a field experiment. The results showed that： nitrogen fertilizer could raise Tianyou huazhan and their parents yield and the reason was effective panicles increased, the reason of Tianyou huazhan yield higher than the other two varieties was effective panicle number and grain weight higher; The application of nitrogen fertilizer could increase dry matter accumulation of Tianyou huazhan and its parents ; under the same treatment, stem sheath dry matter output rate and contribution rate of Tianyou huazhan was the big- gest ; nitrogen fertilizer could increase Tianyou huazhan and parents rice grain length and protein content, decrease chalky grain rate; When harvest different parts of nitrogen accumulation in all varieties positively corrected with nitrogen fertiliza- tion, and nitrogen accumulation in different organs of Tianyou huazhan was significantly higher than that of Huazhan and Tianfeng.

关 键 词：水稻 氮肥 产量 干物质 稻米品质 氮素含量 

分 类 号：S511[农业科学—作物学]