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当前位置: 首页 > 文章 > 播期对黄淮直播稻根系抗倒能力的影响 江西农业学报 2019 (2) 1-7
Position: Home > Articles > Effect of Sowing Date on Lodging Resistance of Root System of Directly-sown Rice in Huang-Huai River Area Acta Agriculturae Jiangxi 2019 (2) 1-7

播期对黄淮直播稻根系抗倒能力的影响

作  者：
杨波;徐波;王宝祥;陈庭木;刘金波;方兆伟;卢百关;刘艳;迟铭;徐大勇
单  位：
江苏徐淮地区连云港农业科学研究所/江苏省现代作物生产协同创新中心
关键词：
直播稻;播期;根干质量;根系;抗倒伏能力
摘  要：
以抗倒能力存在差异的中熟中粳品种连粳7号、徐稻3号和早熟中粳品种连粳15号、连粳13ZJ61为试验材料,在稻麦两熟制下,研究了播期对直播稻根系生长动态的影响,以及水稻根系生长与根系抗倒伏能力的关系。结果表明:(1)在播期范围(6月10～30日)内,中熟中粳品种越早播其抗倒能力越强,早熟中粳在适宜的播期抗倒能力表现较好;(2)根冠比较大、根干质量大、蜡熟期根干质量在播期范围内衰减少是直播稻抗倒能力强的主要特征;(3)中下层根占全部根的比例大、蜡熟期中下层根系在播期范围内衰减少是抗倒能力强的显著特征之一;(4)在播期范围内根数多、根直径大、后期根长和根数衰减少是根部抗倒能力强的重要特征。
译  名：
Effect of Sowing Date on Lodging Resistance of Root System of Directly-sown Rice in Huang-Huai River Area
作  者：
YANG Bo;XU Bo;WANG Bao-xiang;CHEN Ting-mu;LIU Jin-bo;FANG Zhao-wei;LU Bai-guan;LIU Yan;CHI Ming;XU Da-yong;Lianyungang Institute of Agricultural Sciences in Xu-Huai Region of Jiangsu/Jiangsu Collaborative Innovation Center for Modern Crop Production;
单  位：
YANG Bo%XU Bo%WANG Bao-xiang%CHEN Ting-mu%LIU Jin-bo%FANG Zhao-wei%LU Bai-guan%LIU Yan%CHI Ming%XU Da-yong%Lianyungang Institute of Agricultural Sciences in Xu-Huai Region of Jiangsu/Jiangsu Collaborative Innovation Center for Modern Crop Production
关键词：
Directly-sown rice;;Sowing date;;Dry mass of root;;Root system;;Lodging resistance
摘  要：
Using Lianjing 7,Xudao 3(medium-maturing medium japonica rice) and Lianjing 15,Lianjing 13 ZJ61(earlymaturing medium japonica rice) as tested varieties,the author studied the effect of sowing date on the root system growth dynamics of directly-sown rice,and analyzed the relationship between root system growth characteristics and its lodging resistance of rice in rice-wheat double-cropping system in Huang-Huai river area. The results indicated that:(1) within the sowing date scope(June 10 th～ 30 th) of this study,early sowing could strengthen the lodging resistance of medium-maturing medium japonica rice varieties,and appropriate sowing date could strengthen the lodging resistance of early-maturing medium japonica rice varieties;(2) high root-shoot ratio,high root dry mass,and little decline in root dry mass at ripening stage were the main characteristics of directly-sown rice with strong lodging resistance;(3) big ratio of roots in middle-lower soil layer to all roots,and little decline in roots in middle-lower soil layer at ripening stage were the obvious characteristics of directly-sown rice with strong lodging resistance;(4) within the tested sowing date scope,more root number,big root diameter,and little reduction in root length and root number at later growth stage were the important features of directly-sown rice with strong lodging resistance.

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