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当前位置: 首页 > 文章 > 钵苗类型和摆栽密度对粳型超级稻植株抗倒伏能力的影响 扬州大学学报(农业与生命科学版) 2016,37 (3) 87-94+100
Position: Home > Articles > Effects of different bowl types and densities on the culm lodging resistance of bowl seedling transplanting japonicasuper rice Journal of Yangzhou University(Agricultural and Life Science Edition) 2016,37 (3) 87-94+100

钵苗类型和摆栽密度对粳型超级稻植株抗倒伏能力的影响

作  者：
郭保卫;周兴涛;曹利强;张洪程;许轲;霍中洋;魏海燕;戴其根
单  位：
扬州大学农业部长江流域稻作技术创新中心/江苏省作物遗传生理重点实验室
关键词：
水稻;超级稻;钵苗摆栽;密度;抗倒伏能力
摘  要：
通过设置不同类型钵苗与摆栽密度,研究粳型超级稻的抗倒伏能力差异。结果表明:同一类型钵苗不同密度之间,基部4个节间抗折力和弯曲力矩均随移栽密度增大而减小,倒伏指数呈现相反趋势。植株抗倒伏能力与单穗长、单穗重、基部茎鞘宽、单茎茎鞘含钾量、茎秆节间粗度、节间壁厚、弯曲力矩、茎秆抗折力等性状呈正相关,与株高、重心高度、相对重心高度呈负相关,多数相关系数达到显著或极显著水平。抗倒伏各项指标在密度间差异极显著,钵苗类型间大多数差异显著或极显著。不同类型钵苗之间,除3连孔基本苗为36×104苗·hm~(-2)的处理外,抗折力、弯曲力矩由大到小均依次为3连孔、2连孔、单孔,倒伏指数由大到小依次为单孔、2连孔、3连孔。3种类型钵苗最高产处理基部抗折力,弯曲力矩由大到小均依次为2连孔、3连孔、单孔,倒伏指数则为3连孔、单孔、2连孔。相同基本苗下,2连孔、3连孔大穴稀植摆栽茎秆基部节间粗壮、茎壁厚度大、茎秆充实好,具有较强的抗倒伏能力。综合考虑产量因素,在适宜或较多基本苗条件下2连孔摆栽优势明显,易高产、稳产。
译  名：
Effects of different bowl types and densities on the culm lodging resistance of bowl seedling transplanting japonicasuper rice
作  者：
GUO Baowei;ZHOU Xingtao;CAO Liqiang;ZHANG Hongcheng;XU Ke;HUO Zhongyang;WEI Haiyan;DAI Qigen;Innov Cen of Rice Cult Tech in Yangtze River Valley of MOA/Key Lab of Crop Gen and Physio of Jiangsu Prov,Yangzhou Univ;
关键词：
rice;;super rice;;bowl seedling transplanting;;density;;lodging resistance
摘  要：
Different bowl type seedling and density treatments were set to investigate the differences of the clum lodging resistance of japonicasuper rice in this study.The results showed that under the same type of bowl seedling,the breaking resistance and bending moment of basal four internodes decreased with decreasing transplanting density,while the lodging index showed the opposite trend.The culm lodging resistance positively correlated to panicle length,panicle weight,basal stem width,K content in culm and sheath,culm diameter,culm wall thickness,bending moment and breaking force and negatively correlated to the plant height,gravity center height and ratio of gravity center height to plant height.The lodging resistance characteristics displayed significant differences among density treatments and the main characteristics had significant differences among bowl type treatments.And among the different bowl type seedlings,except for the 3-bowl of 36×104 hm~(-2) treatment,the breaking resistance and bending moment showed a trend of3-bowl>2-bowl> single bowl,while the lodging index showed an opposite trend.Under the maximum yield of each type bowl seedling treatments,the breaking resistance and bending moment showed a trend of 2-bowl>3-bowl and single bowl and the lodging index showed a opposite trend.Under the same basic seedling number,the 2-bowl and 3-bowl plants had strong lodging resistance with strong basal internodes,high thickness of culm wall and good stem plumpness.Based on an overall consideration of the stem lodging resistance and yield,under the appropriate or more basic seedlings,2-bowl transplanting rice has an obvious advantage.

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