综合农艺措施对吉粳66产量构成因素的影响

Study on Effect of Synthetical Agronomic Measures to the Yield Component Factor of Jijing 66

对吉粳 6 6产量构成因素与产量的简单相关、偏相关及通径分析结果表明 ,对吉粳 6 6产量作用最大的产量构成因素是单位面积穗数 ,其次为每穗粒数 ,而千粒重和空秕率的作用明显较小 ,尤其是空秕率。因此 ,要使吉粳 6 6品种获得高产 ,首先应主攻穗数 ,在保证足够穗数的基础上再力争穗大。从栽培措施对其产量构成因素的影响来看 ,施氮量和插秧方式的影响较大 ,增施氮肥和密植能显著增加单位面积穗数。因此 ,获得高产的关键措施是施足氮肥 (2 0 0～ 2 10kg/hm2 )和适当密植 (30 0cm× 13 4～ 14 4cm)。

The component factor of yield in Jijing 66 and the simple connection,slanting connection to the yield and path coefficient were analysised.The results showed:The most important factor to yield in jijing 66 was the number of the ears of the grains per unit area;the second most important factor to yield was the number of grains per ear,while the function of the weight one thousand grains and blighted rate were little clearly.Especially blighted rate.So if we want to make Jijing 66 high yield,first we must raise the number of the ears and try to grow big ear of grains on the basis of enough number of ears.We see the influence from planting measure to each factor which interfered with yield,the function of fertilizer N dressed and planting ways were the most;Increasing fertilizer N and close planting can increase the number of the ears per unit area,so,It is the most important way to give enough fertilizer N(200～210 kg per ha) and then proper close planting(30.0 cm×13.4～14.4 cm)