水稻强化栽培不同因子对Ⅲ优98主要经济性状及产量的影响  

Preliminary Study on Influence of the System of Rice Intensification on Main Economic Characteristics and Yield of ⅢYou 98

作　　者：范友胜[1] 卢爱芳[1] 李强[1] 吕和平[1] 袁明中[1] 尹玲[1] 

机构地区：[1]安徽省庐江县农业技术推广中心,安徽庐江231500

出　　处：《安徽农业科学》2007年第21期6398-6401,共4页Journal of Anhui Agricultural Sciences

摘　　要：为了探索在水稻强化栽培条件下不同密度、纯氮量、2,4-D控蘖试验三因子的最佳组合。采用三元二次旋转组合设计,研究“Ⅲ优98”在强化栽培条件下,移栽密度、纯氮量2、,4-D控蘖三因子对产量及主要经济性状的效应。建立了三因子对产量的二次多项回归效应模型,分析得出高产群体主要经济性状的量化指标。总结出“Ⅲ优98”在强化栽培条件下产量≥8 250 kg/hm^2的栽培措施为：移栽密度16.5万-18.0万/hm^2,纯氮量196.5-213.0 kg/hm^2,2,4-D控蘖时间在群体茎蘖达到248.0万-255.0万/hm^2时,三因子取平均值时产量为9 027.0 kg/hm^2。在适宜的密度范围内,通过氮肥管理和2,4-D控蘖,使群体和个体各性状协调发展,是实现高产的重要途径。The purpose of study was to explore the optimum combination of 3 factors of different density,pure N amount and tillering controlled by 2,4-D in the system of rice intensification.The effect of the system of rice intensification on main economic characteristics and yield of ⅢYou 98 was studied with the quadratic orthogonal rotational combination design with three factors.The polynomial quadratic regression effect model of 3 factors on the yield was established and the quantization index of main economic characteristics in high yield population were obtained through analysis. The agriculture cultivate measures of yields≥8 250 kg/hm^2（ of HI you 98 in the system of rice intensification were summarized as follows：transplanting density of 16.5 ten thousand - 18.0 ten thousand plants/hm^2, pure N amount of 196.5 - 213.0 kg/hm^2, tillering controlled by 2,4-D at 248.0 the thousand - 255.0 ten thousand plants/hm^2 and the yield reaching 9 027.0 kg/hm^2 at the average value of three factors in the experimentation. The important way realizing high yield was to make the harmonious development of population and individual through N fertilizer management and tillering controlled by 2,4-D under suitable density range.

关 键 词：Ⅲ优98 水稻强化栽培 移栽密度 纯氮量 2 4-D控蘖 

分 类 号：S511[农业科学—作物学]