云南省立体生态稻区水稻叶龄模式建立  

Establishment of Leaf Age Model of Rice Varieties at Different Altitude Environments in Yunnan Province,China

作　　者：杨从党[1,2] 李刚华[1] 李贵勇[2] 夏琼梅[2] 邓安凤[2] 王绍华[1] 刘正辉[1] 凌启鸿[1] 丁艳锋[1] 

机构地区：[1]南京农业大学农学院/农业部作物生理生态与生产管理重点实验室,江苏南京210095 [2]云南省农业科学院粮食作物研究所,云南昆明650205

出　　处：《西南农业学报》2013年第4期1372-1377,共6页Southwest China Journal of Agricultural Sciences

基　　金：公益性行业(农业)专项[201303102];云南省科技厅国内科技合作[2010AD008];云南省农业科学院院立项目[2009YN-H012];云南省创新人才培养计划[2011CI058]

摘　　要：水稻叶龄模式是根据叶龄进程准确诊断各器官生长的进程，确定生长指标，制定生产措施的栽培模武。随着水稻精确定量栽培技术的扩大应用，叶龄模式的重要性日益突现。为了准确诊断云南省立体气候条件下水稻的生长指标，研究了海拔900—2240m稻区的主栽品种的总叶片数（IN）和伸长节间数（sn），不同海拔稻区同一品种的总叶片数和伸长节间数的变化情况，以及同一生态条件下不同品种的总叶片数和伸长节间数差异。结果表明，云南省籼稻品种的总叶片数在16—20叶，伸长节间数在5—6节，粳稻品种总叶片数在11-16叶，伸长节闻数为4—5节。随着海拔的升高，籼稻品种的叶片数增多，而粳稻品种的总叶片数减少；有的品种伸长节间数保持不变，有的减少；同一生态条件下，不同品种的总叶片数差异较小，仅1叶左右。根据N和n的差异，建立了云南立体生态条件下水稻叶龄模式，为精确指导不同生态区水稻生产提供依据。Leaf age model is the standard rule to diagnose the growth period and decide the crop population quality by the leaf age. With the demonstration of rice precise and quantitative cultivation in China, the Leaf age model played more important role in rice production. In order to study the leaf age model in the stereo environment in Yunnan province, the field experiments were carried out at different counties, in which altitude were from 900 to 2240 m above the sea level, to check the whole leaf age （LN） and the elongation intemodes number （sn） of the main varieties and compare them at different altitude. The results showed that the whole leaf ages of Indica hybrids were from 16 to 20, and the elongation intemodes of them were from 5 to 6. Those of Japonica varieties were from 11 to 16, and 4 to 5, respectively. The whole leaf number of Indica hybrid variety was increased with the altitude adding, whereas that of Japonica variety decreased. The difference of sn of some varieties was very small, but that of the others decreased. The variation of LN for different varieties at the same environment was less than 1 leafage, and sn was no change. Based on the data, 6 rice environments were divided and 1 leafage models were built for every envi- ronment.

关 键 词：水稻 叶龄模式 伸长节间数 立体气候 

分 类 号：S511[农业科学—作物学]