中国稻米Issue(6)：19-27,9.DOI:10.3969/j.issn.1006-8082.2015.06.004
冬水田栽培模式对杂交中稻源库特征和营养吸收利用的影响
Effect of Different Cultivation Models on Nutrient Uptake and Utilization and Source-sink Characteristics of Mid-season Hybrid Rice Combination in Winter Water-logged Field
摘要
Abstract
The variations of grain yield, source-sink characteristics, dry matter and N, P, K distribution in different organs of above ground plants of mid-season hybrid rice were 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), in a randomized block design with 3 replications. Data were analyzed by the vari-ance and regression.The results showed that the effects of cultivation models and hybrid rice combinations on grain yield and dry mat-ter weight in different organs of above ground plants were much greater than on the N、P、K content. Meanwhile, the effects of cultiva-tion models were bigger than that of hybrid rice combinations. Grain yield and dry matter weight showed HL>MM>LH, harvest indexes showed HL<MM<LH. N and P were mainly distributed in grain, and K were mainly distributed in stems;N use efficiency showed HL>MM>LH, P and K use efficiency showed HL<MM<LH. Mid-large panicle type hybrid rice combinations with low chlorophyll content, high spikelets-leaf ratio, high 1 000-grain weight and high grain yield at full heading, had high use efficiency of N, P and K.关键词
冬水田/杂交中稻/栽培模式/库源性状/养分利用效率Key words
winter water-logged field/mid-season hybrid rice/cultivation model/source-sink characteristic/nutrient use efficiency分类
农业科技引用本文复制引用
徐富贤,张林,熊洪,朱永川,刘茂,蒋鹏,郭晓艺,周兴兵..冬水田栽培模式对杂交中稻源库特征和营养吸收利用的影响[J].中国稻米,2015,(6):19-27,9.基金项目
四川省财政“基因工程”项目（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 （）
