摘要
为了优化北方高产杂交粳稻的高产高效栽培技术,以辽宁省水稻研究所选育的高产多抗广适型杂交粳稻辽优9906为试材,采用二因素裂区设计,研究施氮量和插秧密度对杂交稻群体结构和产量性状的影响,提出合适肥密组合,以提高生产效率。研究结果表明,插秧密度为30 cm×16.5 cm、施氮量为13.5 kg/667 m^(2)是最高效肥密组合。密度对产量影响大于肥力对产量的影响,在生产中可适当调节插秧密度构建理想群体结构。当前生产上惯用的施氮量偏高,应适当降低施氮量,提高氮肥的使用效率,但肥力的减少不宜超过20%。
In order to optimize high-yield cultivation techniques of the north high yield hybrid japonica rice,with high-yield,multi-resistance and broad adaptability hybrid japonica rice bred by Liao-9906 as material,using two factor split plot design,study of N application and planting density on the influence of population structure and yield characters of the hybrid rice,put forward appropriate fertilizer combination,in order to improve production efficiency.The results showed that transplanting density of 30 cm×16.5 cm and nitrogen application rate of 13.5 kg/667 m^(2) were the most efficient fertilizer-density combination.The effect of density on yield was greater than that of fertility.The ideal population structure could be constructed by adjusting the density of transplanting properly.The conventional nitrogen application amount in current production is high,so the nitrogen application amount should be reduced appropriately to improve the use efficiency of nitrogen fertilizer,but the reduction of fertility should not exceed 20%.
作者
张雪
张城
李如海
李全英
梁传斌
张满利
王彦荣
苏玉安
陈亚君
李春凯
隋国民
ZHANG Xue;ZHANG Cheng;LI Ru-hai;LI Quan-ying;LIANG Chuan-bin;ZHANG Man-li;WANG Yan-rong;SU Yu-an;CHEN Ya-jun;LI Chun-kai;SUI Guo-min(Liaoning Rice Research Institute,Shenyang 110100,China)
出处
《北方水稻》
CAS
2021年第3期5-7,13,共4页
North Rice
基金
水稻高产群体构建及高效栽培关键技术研究(2017YFD0300708)。
关键词
杂交粳稻
施氮量
插秧密度
产量
Hybrid japonica rice
N application
Transplanting density
Yield
