摘要
以滇型杂交粳稻组合"滇杂35"和4个云南水稻老品种永宁小麻谷、永宁小白谷、阿楚车、牛八谷为材料,种植于不同海拔点,研究不同海拔下其生长情况。结果表明:水稻品种随着种植地海拔的升高生育期延长,其株高变矮,穗茎长及穗长缩短。水稻产量构成因子中,随着海拔的升高,有效穗、穗总粒数降低,差异达显著或极显著水平,千粒重、结实率差异不大。因此高海拔栽培种植时,应重视有效穗及穗总粒数的提高。
In the research, 1 Dian type hybrid Japonica-Dianza 35 and 4 Yunnan landraces （ Yongningxiaomagu Yongningxiaobaigu、Arehuehe and Niubagu） were planted at different position, and the effect of altitude on growth of rice varieties was studied. The results show the plant length, panicle-node length and panicle length of 5 rice varieties change more short, the rice growth turned into slowly with altitude increasing. Analysed the yield components, the effect panicles and grains per panicle have significant different at different altitude, but seed-set rate and weight of 1 000 grains show no different. It is the most important method for rice high yield to increase the number of effect panicles and grains per panicle.
出处
《种子》
CSCD
北大核心
2009年第7期27-30,共4页
Seed
基金
云南省科技厅"十一五"科技攻关项目(2006NG05)
关键词
水稻
海拔
农艺性状
产量构成因子
rice
altitude
agronomic characters
yield components
