植物营养与肥料学报2014,20(3）：588-597 Journal of Plant Nutrition and Fertilizer
doi=10. 11674/zwyf. 2014. 0309
不同产量类型水稻基因型干物质积累与磷素吸收利用
李莉，张锡洲*，李廷轩，余海英，林
（四川农业大学资源环境学院，四川成都611130）
摘要：以27份中稽和29份晚稽亲本材料为供试材料，采用系统聚类方法将供试材料按产量分为高、中、低产三个类型，通过大田试验比较了不同产量类型、不同生育阶段的干物质生产和磷素吸收利用的差异。结果表明，1)不同生育类型水稻产量、磷吸收及利用效率存在极显著的基因型差异.中稽和晚稽最高产量分别是最低产量的3.24 和2.15倍：晚稽高产类型产量较中稽高12.69%，但磷利用效率差异不显著。2）中稽高产类型磷积累量在分案～拔节期最大，晚稽高产类型在拔节抽穗期最大；中稽和晚稻高产类型干物质量均在分粟～拔节期最小，拔节～抽穗期最大，出现前小、中强、后高的现象。3）中稽干物质量和磷积累量均在分檗～拨节期对产量贡献率最大，分别为42.38%和58.09%；晚稻磷积累量在抽穗～成熟期对产量贡献率最大，为39.35%，干物质量在此阶段也较高，为16.16%。因此，营养生长阶段的干物质积累和磷的吸收对中稽产量影响较大，而对晚稽产量影响较大的是在生育后期。
关键词：水稻；产量；磷积累量；干物质积累量
中图分类号：S147.23；S511
文献标识码：A
文章编号：1008-505X(2014)03-0588-10
Genotypedifferencesindrymatteraccumulation andphosphorus absorption and useefficiencyinrice
LI Li, ZHANG Xi-zhou' , LI Ting-xuan, YU Hai-ying, JI Lin
(College of Resources and Enuironment Sciences, Sichuan Agricultural Unirersity, Chengdu 611130, China)
Abstract: Twenty seven of middle-season and twenty nine of late rice cultivars were taken as testing materials, their genotypes were assigned into three groups of high , middle and low yields by least square and dynamic clustering method. The biomass and phosphorus absorption were investigated in different growth stages for various yield types using field experiment. There was extremely significant genotype differences in rice yield , phosphorus absorption and use efficiency among the rice cultivars in different growth stages . The maximum yields were 3. 24 and 2. 15 times higher than the minimum yields for data obtained from middle -season rice and late rice, respectively. The yield of late rice was 12. 69% higher than middle-season rice, but the difference was no significant in phosphorus use efficiency between them . The largest phosphorus accumulation was in tillering jointing stage for middle-season and high yield type , and in jointing-heading stage for late and high yield rice. There is not much dry matter accumulation in tillering jointing stage, the largest accumulation was in jointing -heading stage for both the middle -season and late high yield rice. Dry matter and phosphorus accumulation during tillering jointing stage played main role in yield of middle -season rice with the highest contribution rate to yield of up to 42. 38% and 58. 09% , respectively. The phosphorus accumulation during heading -maturing stage is important in yield of late rice with the highest contribution rate of up to 39. 35% , and 16. 16% of the dry weight was accumulated in this stage. In conclusion, the cumulative dry matter during tillering -heading stage and phosphorus absorption during tillering-jointing stage play key role in yield formation of middle -season rice , the cumulative dry matter in early
stage and phosphorus in late stage are important to the yield of late rice . Key words riceyieldphosphorus accumulationdry mass
收稿日期：2013-06-14
接受日期：2013-11-12
基金项目：四川省科技支撑项目（2013NZ0044，2013NZ0029）；四川省科技支撑计划项目（2014NZ0008）资助。
作者简介：李莉（1988一），女，重庆永川人，硕士研究生，主要从事植物磷素营养方面研究。E-mail：lilyxth@163.com
*通信作者E-mail：zhangxzhou@163.com