摘要
为促进水稻的优质育种和高产栽培,以北方粳稻品种牡丹江27和牡丹江31为试验材料,研究了不同肥密水平对东北粳稻群体生长及产量的影响。结果表明:氮肥用量越高,两个品种最大分蘖数越大,且达到最大值的时间变早,不同时期不同氮肥处理下叶片干物质积累量与产量显著相关。从产量构成因素看,低密度水平时,有效穗数与氮肥施用量呈反比,而高密度水平时则表现出先升后降的趋势。
In order to promote high quality breeding and high yield cultivation ,taking japonica varieties of Mu-danjiang 27 and Mudanjiang 31 as materials ,the effects of different fertilizers and density levels on population growth and yield of were studied .The results showed that the more nitrogen fertilizer amount ,the maximum tillering number of two varieties and the earlier achieving time .In different nitrogen treatments ,dry matter ac-cumulation in leaves was significantly correlated with yield in different growth states .Effective panicles were inversely proportional with nitrogen fertilizer in low density for yield components ,effective panicles increased first and then decreased in high density .
出处
《黑龙江农业科学》
2014年第1期26-30,共5页
Heilongjiang Agricultural Sciences
关键词
水稻
分蘖动态
干物质重
产量
rice
tillering dynamics
dry weight
yield
