摘要
以粳型超级稻沈农265为试材,采用有序与无序状态下6种不同田间行穴距配置及南北与东西两种行向,探讨北方粳型超级稻有序与无序田间优适配置及其群体特征。结果表明,有序田间配置下宽窄行稀植(40.0 cm+26.6 cm)×13.3 cm东西行向是粳型超级稻沈农265相对优适的田间配置方式。上述田间配置高产原因为有效分蘖率相对较高,叶面积指数较好,相对光照强度较优,物质生产与积累量较多,提高了单位面积穗数、单位面积的总粒数(颖花数、实粒数)、每穗粒数(总粒数、实粒数)和粒重(千粒重),并且具有最大的收获指数,其产量构成因素在6种试验配置中优势最为明显。
To explore the optimal field arrangement patterns and population characteristics of northern japonica super rice.Shennong 265,a famous northern japonica super rice variety,was used as material,sowed in six different row-hill space combinations and two different row directions（south-north and east-west） under order and disorder field arrangement patterns.The wide-narrow row sparse planting（40.0 cm ＋ 26.6 cm） × 13.3 cm with east-west row direction was the best planting pattern for japonica super rice Shennong 265.The reasons of high yielding under this field arrangement pattern were high effective tiller percentage,optimum leaf area index,more illumination intensity and more mass production and accumulation.The panicle number per unit area,total number of grains per unit area（including total number of spikelets and total number of filled grains）,number of grains per panicle（including total number of grains and number of filled grains） and grain weight（1 000-grain weight） were improved Shennong 265,under this field planting pattern,had the biggest harvest index and optimum yield components among the six field arrangement patterns,whose yield advantage was obvious.
出处
《江苏农业学报》
CSCD
北大核心
2010年第3期462-467,共6页
Jiangsu Journal of Agricultural Sciences
基金
公益性行业(农业)科研专项经费项目(200903003)
国家科技支撑计划项目(2006BAD61A01-6)
关键词
超级稻
粳稻
有序配置
无序配置
群体特征
super rice
japonica rice
order arrangement
disorder arrangement
population characteristic
