江西农业大学学报Issue(1)：8-15,8.
行／株距比对超高产早稻产量和上部三叶的影响
Effects of Ratio of Row Spacing to Intrarow Spaic ng on Yield and Top Three Leaves of Super-high -yielding Early Rice
摘要
Abstract
In 2011 and 2012 ,using a split-plot design ,with super-high-yielding early rice of Zhongjiazao 17 and Ganxin 203 as materials,in the same planting density of 31.20×104 hills/hm2,the effects of RS/IS (ra-tio of row spacing to intrarow row spacing ) on yield,top three leaves morphological features and its relationship to them.The results showed that ,the yield of the treatment with nitrogen application of two varieties was signifi-cantly higher than that of the treatment without nitrogen application .The yield of Ganxin 203 with RS/IS of 5.0 (40.0 cm×8.0 cm) and 2.8 (30.0 cm×10.7 cm) without nitrogen application was higher than that with RS/ISof 2.0 (25.0 cm×12.8 cm) and 1.3 (20.0 cm×16.0 cm),and that with RS/IS of 2.8 and 2.0 with nitrogen ap-plication was significantly higher than that with RS/IS of 5.0 and 1.3.The yield of Zhongjiazao with RS/IS of 2.0 and 1.3 without nitrogen application was higher than that with RS/IS of 5.0 and 2.8,and that with RS/IS of 2.8,2.0 and 1.3 with nitrogen application was significantly higher than that with RS/IS of 5.0.Ganxin 203 with RS/IS of 2.8 and 2.0,and Zhongjiazao 17 with RS/IS of 2.0 and 1.3 were advantageous to high yield and nitro-gen use efficiency ,but RS/IS of 5.0 was not .RS/IS had significant or extremely significant influence of on the opening angle and area of flag leaves ,basal angle of the second leaves from top ,basal angle ,length ,width and area of the third leaves from top .Multiple stepwise regression analysis showed that the yield had a positive cor-relation with opening angle and width of the second leaves from top and area of the third leaves from top of Ganxin 203,and with basal angle and width of the second leaves from top and opening angle and width of the third leaves from top of zhongjiazao 17.关键词
超高产早稻/行/株距比/施氮量/上部三叶/叶片形态Key words
super-high-yielding early rice/ratio of row spacing to intrarow spacing/nitrogen application amount/top three leaves/leaf morphology分类
农业科技引用本文复制引用
林洪鑫,彭春瑞,袁展汽,肖运萍,刘仁根,汪瑞清..行／株距比对超高产早稻产量和上部三叶的影响[J].江西农业大学学报,2014,(1):8-15,8.基金项目
国家“十二五”科技支撑计划项目（2012BAD04B11、2012BAD15B03）和江西省农科院青年创新基金项目 （）
