栽培措施对优质杂交稻新组合D优3232的生长群体及产量影响

Effects of Cultivation Means on Growth Colony and Output of Top-quality New Hybrib Rice Combination D-3232

用正交试验设计对优质杂交稻 D 优3232进行了不同栽插密度、苗数、施肥方式试验,分析不同栽培因素及水平对分蘖成穗、主要经济性状及产量的影响。结果表明,实行16.7cm×20cm 规格栽插、每穴插3粒谷苗、采用底肥+分蘖肥+穗肥的施肥方式,能充分协调植株个体与群体的关系,增大低位分蘖和大分蘖成穗比例,穗型较大,着粒较多,结实率较高,同时群体穗数多,获得的产量最高;在密度、苗数、施肥3因素中,以施肥对产量作用最大,其次为苗数,密度对产量影响最小;不同施肥方式中,以底肥十分蘖肥+穗肥的施肥方式产量最高。

Different planting density,seeding number and fertilizing means of new hybrid rice combination were studied.The effects on tillering,main economic properties and output caused by different planting factors and levels were analysed.The results indicated that the planting on the scale 16.7 cm×20 cm,three seedlings in every matting sile and fertilizing in the'base fertilizer + tilering fertilizer + spike fertilizer'model can adequately harmonize the relationship beween plant individuals and the colony,increase the proportion of root tillering and plant tillering.Fertilization can offer the biggest effect on rice output.The minor one is seedling number,and density can offer little effect.As for different fertilizing means,the model of 'base fertilizer + tilering fertilizer + spike fertilizer',had the greatest effect on output increase output can be gained.