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作物学报 ›› 2010, Vol. 36 ›› Issue (10): 1743-1751.doi: 10.3724/SP.J.1006.2010.01743

• 耕作栽培·生理生化 • 上一篇    下一篇

栽插密度与施氮量对双季稻上部三叶叶长和叶角的影响

林洪鑫1,2,潘晓华1,*,石庆华1,彭春瑞2,吴建富1   

  1. 1江西农业大学 / 作物生理生态与遗传育种教育部重点实验室 / 农业部双季稻生理生态与栽培重点开放实验室，江西南昌330045；2江西省农业科学院土壤肥料与资源环境研究所，江西南昌330200
  • 收稿日期:2010-01-22 修回日期:2010-04-15 出版日期:2010-10-12 网络出版日期:2010-08-04
  • 通讯作者: 潘晓华, E-mail:xhuapan@163.com, Tel: 0791-3813490
  • 基金资助:

    本研究由国家“十一五”科技支撑计划项目（2006BAD02A04）和江西省科技厅重点攻关项目（20051B020010）资助。

Effects of Nitrogen Application Amount and Planting Density on Angle and Length of Top Three Leaves in Double-Cropping Rice

LIN Hong-Xin1,2,PAN Xiao-Hua1,*,SHI Qing-Hua1,PENG Chun-Rui2,WU Jian-Fu1   

  1. 1Jiangxi Agricultural University/ Key Laboratory of Crop Physiology, Ecology and Genetic Breeding, Ministry of Education/Key Laboratory of Physiology, Ecology and Cultivation of Double Cropping Rice, Ministry of Agriculture, the People’s Republic of China, Nanchang 330045, China; 2Soil and Fertilizer & Resources and Environment Institute Jiangxi Academy of Agricultural Sciences, Nanchang 330200, China
  • Received:2010-01-22 Revised:2010-04-15 Published:2010-10-12 Published online:2010-08-04
  • Contact: PAN Xiao-Hua,E-mail:xhuapan@163.com,Tel:0791-3813490

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1421

被引次数

45

摘要： 于2007和2008年，采用裂区设计，以双季早稻中早22和双季晚稻天优华占为材料，研究了栽插密度与施氮量对上部三叶的叶长和叶角的影响及其与产量的关系。结果表明，在低氮情况下，增加栽插密度可提高产量，而在中高氮条件下，适当降低栽插密度有利于获得高产。倒一至倒三叶叶长随施氮量增加而增长，随栽插密度下降而增长。中早22的倒一至倒三叶的基角、开张角和叶长与稻谷产量呈抛物线关系；天优华占的倒一至倒三叶的基角和开张角与稻谷产量呈抛物线关系，而倒一至倒三叶叶长与稻谷产量呈直线关系。产量最高时中早22倒一叶基角、开张角和叶长的适宜值分别为11.37°、7.81°、29.74 cm；倒二叶基角、开张角和叶长的适宜值分别为17.27°、16.06°、36.08 cm；倒三叶基角、开张角和叶长的适宜值分别为21.76°、24.70°、39.02 cm；天优华占倒一叶基角和开张角的适宜值分别为11.62°、12.30°；倒二叶基角和开张角的适宜值分别为32.61°、30.08°；倒三叶基角和开张角的适宜值分别为23.55°、31.21°。

关键词: 双季稻, 施氮量, 栽插密度, 上部3叶, 叶长, 叶角

Abstract: An experiment was conducted with early rice Zhongzao 22 and late rice Tianyouhuazhan with split-plot design in 2007 and 2008. The results showed that the grain yield increased with increasing planting density in low nitrogen application condition, while the lower planting density was favorable to higher grain yield in higher nitrogen application condition. The lengths of the top three leaves were increased with increasing applied nitrogen amount or decreasing planting density. There were a parabolic relationship of grain yield with basal angle, opening angle and length of the top three leaves of Zhongzao 22, and with basal angle and opening angle of the top three leaves of Tianyouhuazhan, and a linear relationship of grain yield with the length of the top three leaves of Tianyouhuazhan. The optimum values of basal angle, opening angle and length of the flag leaf of Zhongzao 22 for high yield were 11.37°, 7.81°, 29.74 cm, those of the second leaf from top were 17.27°, 16.06°, 36.08 cm, and those of the third leaf from top were 21.76°, 24.70°, 39.02 cm, respectively; the optimum values of the basal angle and opening angle of the flag leaf of Tianyouhuazhan were 11.62°, 12.30°, those of the second leaf from top were 32.61°, 30.08° and those of the third leaf from top were 23.55°, 31.21°, respectively.

Key words: Double-cropping rice, Nitrogen application amount, Planting density, Top three leaves, Leaf length, Leaf angle

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