[1]苏东行,彭显龙,罗盛国,等.氮肥管理对寒地水稻倒伏性能的影响[J].黑龙江农业科学,2012,(09):39-42.
　SU Dong-hang,PENG Xian-long,LUO Sheng-guo,et al.Effects of Nitrogen Fertilizer Management onLodging Resistance of Rice in Cold Area[J].HEILONGJIANG AGRICULTURAL SCIENCES,2012,(09):39-42.
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氮肥管理对寒地水稻倒伏性能的影响

《黑龙江农业科学》[ISSN:1002-2767/CN:23-1204/S] 卷: 期数: 2012年09 页码: 39-42 栏目: 出版日期: 2012-09-10
Title:
Effects of Nitrogen Fertilizer Management onLodging Resistance of Rice in Cold Area
文章编号:
1002-2767（2012）09-0039-04
作者:
苏东行; 彭显龙; 罗盛国; 刘元英; 宋文博; 张宇
东北农业大学 资源与环境学院，黑龙江 哈尔滨 150030
Author(s):
SU Dong-hang; PENG Xian-long; LUO Sheng-guo; LIU Yuan-ying; SONG Wen-bo; ZHANG Yu
Resource and Environment College of Northeast Agricultural University,Harbin 150030
关键词:
氮肥管理; 倒伏; 产量
Keywords:
Nitrogen fertilizer management; lodging index; grain yield
分类号:
S511
文献标志码:
A
摘要:
以空育131为试材，采用田间小区试验方法，在相同穗肥用量下（35 kg·hm-2），设置不同基蘖氮量（N1:30 kg·hm-2;N2:65 kg·hm-2和N3:85 kg·hm-2），并以氮肥全作基蘖肥的习惯施氮方法为对照(N4:150 kg·hm-2)，研究了氮肥管理对寒地水稻倒伏性状的影响，以期为寒地水稻施肥提供理论依据。结果表明：随着基蘖肥用量增加，水稻株高显著增加，当基蘖肥氮肥用量超过65 kg·hm-2，株高没有显著差异；当基蘖肥用量低于85 kg·hm-2，基部节间长度差异不明显；当基蘖氮肥量增加到150 kg·hm-2，基部节间长度显著提高；N2处理重心高度、茎粗和壁厚都最高。随着基蘖肥用量的提高，水稻抗折力先增加，然后降低，因此N2处理抗折力最高，而N4处理抗折力最低。随着基蘖肥用量增加，倒伏指数增加，倒伏的风险加大。产量高低的顺序为N1＜N4＜N2＜N3，随着氮肥用量的提高产量先增加，然后降低。因此，基蘖肥用量适宜的处理能够通过优化水稻节间配置，增加水稻茎粗和壁厚，显著提高水稻抗折力，维持较高的抗倒伏能力，并能提高水稻产量。
Abstract:
Taking Kongyu 131 as experimental material,a field experiment was conducted with the same panicle proportion（35 kg·hm-2）and different basic tillering （N1:30 kg·hm-2;N2:65 kg·hm-2和N3:85 kg·hm-2），and with the control of the fertilization with the basic tillering only (N4:150 kg·hm-2),the effect of nitrogen management on the lodging resistance of rice was studied to provide theoretical basis for fertilization of rice plant in cold area.The results showed that with the increasing of the basic tillering，the plant height increased until the basic tillering exceeded the level of 65 kg·hm-2;there was non-notable difference with the length of the basal stem of different treatments when the basic tillering didn’t exceed the level of 85 kg·hm-2,but that would be another condition if the basic tillering exceeded the level of 150 kg·hm-2.In all treatments,the gravity center height,the steam diameter and the stem wall thickness of N2 were the highest.The snapping increased first and then decreased with the increasing of the basic tillering.For that，the snapping of N2 was the lowest，and that of N4 was the highest.The lodging index resistance increased with the increasing of the basic tillering.The comparative condition of the yield of different treatments was that:N1＜N4＜N2＜N3.The yield increased first and then decreased with the increasing of the N fertilization.Therefore,the treatment with appropriate basic tillering had higher yield and lodging resistance through optimizing internode collocation,increasing cruder steam diameter and thicker stem wall thickness.

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备注/Memo

第一作者简介：苏东行（1987-），男，山东省乐陵市人，在读硕士，从事水稻施肥研究。E-mail：sudonghang_001@163.com。

通讯作者：彭显龙（1976-），男，博士，副教授，硕士研究生生导师，从事水稻施肥研究。E-mail：pxl0508@163.com。

更新日期/Last Update: 2014-10-27