杂交中稻组合对冬水田不同栽培模式的适应性研究  

Study on Adaptation of Mid-season Hybrid Rice to Different Cultivation Models in Winter Water-logged Field

作　　者：徐富贤[1] 张林[1] 熊洪[1] 朱永川[1] 郭晓艺[1] 刘茂[1] 

机构地区：[1]四川省农业科学院水稻高粱研究所,四川泸州646000

出　　处：《西南农业学报》2014年第2期541-548,共8页Southwest China Journal of Agricultural Sciences

基　　金：四川省财政基因工程项目论文基金(2013LWJJ-009);公益性行业专项(201003016);粮食科技丰产工程(2011BAD16BO5-1);西南水稻创新体系建设;四川省财政推广项目

摘　　要：以20个杂交中稻组合为材料,在冬水田高密低肥、中密中肥和低密高肥3类栽培模式下,研究了产量及库源性状的变异.结果表明,产量及主要库源性状分别在3个栽培模式间、20个杂交组合间及栽培模式与杂交组合间的交互作用均达极显著水平,20个杂交组合在3种栽培模式的平均产量表现为高密低肥＞中密中肥＞低密高肥,分别筛选出了适宜3种栽培模式和同时适宜3种栽培模式的杂交组合.高密低肥模式比其他2种模式增产的杂交组合因有效穗数提高致颖花量增加,而减产杂交组合则因穗粒数明显下降致颖花量降低.结实事低于82％的杂交组合适宜于高密低肥栽培模式,高于86％的组合均适宜于中密中肥和低密高肥栽培模式,结实事为82％～86％杂交组合也适宜中密中肥栽培.可把杂交组合的结实率作为选择栽培模式的科学依据.In this paper,the adaptation of mid-season hybrid rice to different cultivation models was studied in winter water-logged field.The experiment was conducted with 20 mid-season hybrid rice combinations grown in 3 cultivation models of high-density with low-fertilization （HL）,mid-density with mid-fertilization （MM） and low density with high fertilization （LH）,a randomized block design was replicated thee times,and Data by the variance,correlation,clustering and regression were analyzed.The results showed that there were highly significant differences of grain yield and main sink-source characteristics between 3 cultivation models,20 mid-season hybrid rice combinations and the interaction of cultivation models with hybrid rice combinations.The differences of mean grain yield of 20 hybrid rice combinations in 3 cultivation models was in order of HL ＞ MM ＞ LH,and the hybrid rice combinations of adaptation to 3 cultivation models were screened,respectively.The reason of increasing grain yield for HL compared with other 2 cultivation models of some hybrid rice combinations was that the total spikelets were increased by increasing effective panicles,and one of hybrid rice combinations of decreasing grain yield was that the total spikelets were decreased by decreasing spikelets per panicle.The hybrid rice combinations of seed set percentage lower than 82 ％ were adapted to HL,and those of seed set percentage higher than 86 ％,82 ％-86 ％ were adapted to MM,LH and MM,respectively.Seed set percentage would be used as the scientific basis for selecting hybrid rice combinations of their adaptation to different cultivation models.

关 键 词：杂交中稻 冬水田 栽培模式 适应性 

分 类 号：S511[农业科学—作物学]