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 Spacing on Yield and Top Three Leaves of Super-high-yielding Early Rice

作　　者：林洪鑫[1] 彭春瑞[1] 袁展汽[1] 肖运萍[1] 刘仁根[1] 汪瑞清[1] 

机构地区：[1]江西省农业科学院土壤肥料与资源环境研究所/农业部长江中下游作物生理生态与耕作重点实验室/国家红壤改良工程技术研究中心,江西南昌330200

出　　处：《江西农业大学学报》2014年第1期8-15,共8页Acta Agriculturae Universitatis Jiangxiensis

基　　金：国家"十二五"科技支撑计划项目(2012BAD04B11;2012BAD15B03);江西省农科院青年创新基金项目(2010-CQN004)

摘　　要：于2011和2012年,采用再裂区设计,以超高产早稻中嘉早17和淦鑫203为材料,在31.20万蔸/hm2密度下,研究了行/株距比对不同品种产量和上部三叶形态特征的影响及二者的关系。结果表明,两品种施氮处理的产量均显著高于不施氮处理。淦鑫203的产量在不施氮时以RS/IS5.0(40.0 cm×8.0 cm)和RS/IS2.8(30.0 cm×10.7 cm)略高,在施氮时以RS/IS2.8和RS/IS2.0(25.0 cm×12.8 cm)显著高于RS/IS5.0和RS/IS1.3(20.0 cm×16.0 cm);而中嘉早17的产量在不施氮时以RS/IS2.0和RS/IS1.3显著高于RS/IS5.0和RS/IS2.8;在施氮时以RS/IS2.8、RS/IS2.0和RS/IS1.3显著高于RS/IS5.0。淦鑫203以RS/IS2.8和RS/IS2.0,中嘉早17以RS/IS2.0和RS/IS1.3有利于水稻高产和氮高效,而RS/IS5.0不利于水稻高产和氮高效。RS/IS对倒一叶的开张角和叶面积,倒二叶的基角,倒三叶的基角、叶长、叶宽和叶面积有显著或极显著影响。多元逐步回归分析表明,淦鑫203倒二叶的开张角、叶宽和倒三叶的叶面积与产量正相关,而中嘉早17倒二叶的基角、叶宽和倒三叶的开张角、叶宽与产量正相关。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 

分 类 号：S511.31[农业科学—作物学]