1材料与方法1.1试验地基本情况试验安排于四川省资阳市雁江区宝台镇东角村十三社王修贤责任田内。试验田前季为冬闲田,肥力中等,地势向阳,排灌方便,海拔370m左右。1.2试验品种宜香优5979、宜香4245、中1优188、川优6203、旌优727、川农优445、宜香优2115、川谷优642、K优AG及本试验对照内香优10号共10个品种。1.3试验设计单因素随机区组排列,三次重复;每小区20m~2、8行区,每行45窝,360窝/小区、折合密度180 000窝/hm~2;重 1 Materials and methods 1.1 The basic conditions of the experiment The experiment was arranged in the field of Wang Xiu-xian, a member of Xixianyin, Dongjiao Village, Baotai Town, Yanjiang District, Ziyang City, Sichuan Province. Experimental field before the winter fallow field, medium fertility, topography, irrigation and drainage convenience, elevation 370m. 1.2 The test varieties Yixiangyou 5979, Yixiang 4245, 1 You 188, Chuan You 6203, Jingyou 727, Chuannongyou 445, Yixiang You 2115, Chuanu You 642, K You AG and the test control Nei You 10 A total of 10 varieties. 1.3 Experimental design Single-factor randomized block arrangement, repeated three times; each district of 20m ~ 2,8 line area, each line 45, 360 / cell, equivalent density of 180 000 nest / hm ~ 2;