【摘要】 在大田栽培条件下，以施Ｎ量为主区，对吉组培２８号、组培１３号与插秧方式的处理组合为副区的试验进行了研究．结果表明：（１）在一定密度范围内，有效分蘖终止期随穴距变小而提前；（２）两品种在行距为２９．７ｃｍ、穴距为９．９ｃｍ时，产量最高；（３）增施Ｎ肥对基部Ⅰ、Ⅱ节间有明显促进作用；（４）产量与施Ｎ量间基本呈抛物线；（５）施Ｎ量、密度对产量作用存在适宜范围。更多还原

【Abstract】 Under the field culture condition, studied the trialwhich N-application is the main plot, combination for bothJ: -Tissue Culture 28, Tissueculture 13 and planting type is sideplot. The resultS are shown: (1)In certain range of the spacing ofrice, with hill distance becoming small, the bearing tillers endperiod getS in advance; (2)When line distance is 29.7cm, hill distance is 9.9cm, the yield of wo varieties is the maximum; (3)Increasing N-appliation has obviousdeveloping effect for the lengths of Ⅰ.Ⅱ internode above the roots;(4)The yield and N-application appear the relation of parabola; (5)The effect, which both Napplication and the spaing of rice affect on the yield exits the optium range.更多还原