云南特殊生态区水稻高产机理研究  

Studies on Mechanism of High Yield Rice in Special Eco-site of Yunnan Province

作　　者：夏琼梅[1] 李贵勇[1] 邓安凤[1] 彭秀英 白秀兰 龙瑞平[1] 杨从党[1] 

机构地区：[1]云南省农业科学院粮食作物研究所,云南昆明650205 [2]云南省永胜县涛源乡农科站,云南永胜674205 [3]云南省西双版纳州农业科学研究所,云南景洪666100

出　　处：《西南农业学报》2016年第1期6-10,共5页Southwest China Journal of Agricultural Sciences

基　　金：国家重点基础研究发展计划(973计划)(2013CB835200);云南省创新人才培养计划(2011CI058)

摘　　要：2010-2011年以纯系品种9311、明恢63、IR64为试验材料,在云南省丽江市永胜县涛源乡和西双版纳州景洪市进行田间试验,研究云南特殊生态条件下水稻的高产机理,为水稻高产的表观遗传学研究提供材料和依据。结果表明,水稻生长期间涛源试点相对湿度较低,抽穗期前平均温度较高,抽穗后温差较大。涛源试点3个品种的实际产量和理论产量均高于景洪试点,增幅超过70%,达极显著水平。涛源试点具有较高的有效穗、颖花量、结实率和千粒重;成熟期的干物质积累较高,尤其是灌浆期的干物质积累量。氮素积累量差异主要表现在生长后期,涛源试点极显著高于景洪试点,氮素收获指数差异极显著。同一品种在两个生态稻区产量及其构成因子的差异较大,达极显著水平,为进一步研究表观遗传机制奠定了基础。Systematic research was conducted to study the mechanism of special high-yield eco-site on rice high yield. Field experiments were carried out at Taoyuan and Jinghong in 2010 and 2011. The results showed that special high-yield eco-site（ Taoyuan） had lower mean relative humidity during rice growth period and had higher average temperature before full heading stage. Range of temperature was larger after full heading stage. At special high-yield eco-site（ Taoyuan）,all varieties yield were significantly higher than Jinghong,with 70 % overall increase. According to the result of yield components,there were higher effective ears,spikelets per panicle,spikelet fertility and thousand grain weight at special high-yield eco-site. Total dry weight of maturing stage at Taoyuan was higher than Jinghong,especially at grain filling stage. Difference of total nitrogen accumulation was at the later stage,and nitrogen harvest index（ NHI） at special high-yield eco-site was highly significant than Jinghong. Rice yield of the same variety was highly significant between special high-yield eco-site and low-yield ecosite. The experimental result could construct the basis of the future epigenetic mechanism research about higher yield formation at special high-yield eco-site.

关 键 词：水稻 特殊生态区 高产研究 

分 类 号：S511[农业科学—作物学]