[1]窦超银,袁 尧,王 洁,等.水肥一体化施氮量对水稻生长和产量的影响[J].江苏水利,2019,(07):30-34.
　DOU Chaoyin,YUAN Yao,WANG Jie,et al.Effects of different nitrogen application amount on the growth and yield of rice under integrated fertilizer irrigation condition[J].JIANGSU WATER RESOURCES,2019,(07):30-34.
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水肥一体化施氮量对水稻生长和产量的影响()
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《江苏水利》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2019年07期
页码:
30-34
栏目:
农村水利
出版日期:
2019-07-19

文章信息/Info

Title:
Effects of different nitrogen application amount on the growth and yield of rice under integrated fertilizer irrigation condition
文章编号:
1007-7839(2019)07-0030-05
作者:
窦超银1;  袁 尧2;  王 洁3;  周明耀1;  叶振威1
1.扬州大学水利与能源动力工程学院, 江苏 扬州 225009; 2.江苏省水利科学研究院, 江苏 南京 210017; 3.扬州市水利局,江苏 扬州 225500
Author(s):
DOU Chaoyin1;  YUAN Yao2;  WANG Jie3; ZHOU Mingyao1;  YE Zhenwei1
1.School of Hydraulic, Energy and Power Engineering, Yangzhou University, Yangzhou 225009, Jiangsu; 2.Jiangsu Institute of Water Resources and Hydropower Research, Nanjing 210017, Jiangsu; 3.Yangzhou Water Conservancy Bureau, Yangzhou 225000, Jiangsu
关键词:
水稻;  水肥一体化;  氮肥用量;  长势;  产量
Keywords:
rice;  integrated fertilizer irrigation;  nitrogen application;  plant growth;  yield
分类号:
S365,S274.3
文献标志码:
A
摘要:
为了更为合理的确定水肥一体化条件下水稻的氮肥用量,通过盆栽试验和溶解施肥模拟了水肥一体化灌溉施肥过程,研究了不同施氮量对水稻生长和产量的影响。试验结果表明随着施氮量的增加,水稻茎蘖数、株高、LAI和地上干物质重均有先增大后减小的变化趋势,施氮量225 kg/hm2水稻长势最好,施氮量270 kg/hm2长势最差; 施氮量对SPAD无显著影响; 穗长、穗重、每穗实粒数和每穗粒数均随着追肥施氮量增加而减小,千粒重随着追肥施氮量增加先增大后减小,施氮量135～225 kg/hm2时,产量相近,但施氮量270 kg/hm2处理产量最低,且显著低于其他水平。因此,水肥一体化条件下,高施氮量不利于水稻生长和产量形成,适当减少氮素用量不会造成减产,综合考虑稻田排水和提高肥效,参考施氮量以180 kg/hm2为宜。
Abstract:
In order to determine a more reasonable range of nitrogen application for rice under integrated fertilizer irrigation condition, pot experiment and dissolved fertilizer application were carried out and simulated the fertilizer irrigation management. Effects of different nitrogen application(pure nitrogen: 135, 180, 225 and 270 kg/hm2)on the growth and yield of rice were studied during the experiment. The results showed that: as the amount of nitrogen application increased, the tiller number, stem length, leaf area index, and shoot dry matter increased first and then decreased. Desirable growth was got in the case of 225 kg/hm2 while undesirable growth was found in the level of 270 kg/hm2. Fertilizer application had no significant effect on SPAD during the growing period. Besides that, ear length, panicle weight, filled grains per spike and grains per spike decreased with the increase of nitrogen application, while thousand seed weight increased firstly and then decreased. Nitrogen application from 135 to 225 kg/hm2 had no significant effect on rice yield, while yield decreased and significantly less than other treatments with the application of 270 kg/hm2. Therefore, under integrated fertilizer irrigation condition, high amount of nitrogen application was not good for plant growth and harvest; the rational reduction of nitrogen application would not lead to cut the yield. Therefore, comprehensively considering the drainage and fertilizer efficiency, nitrogen application of 180 kg/hm2 was recommended.

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备注/Memo

备注/Memo:
收稿日期:2019-03-29
基金项目:江苏水利科技项目(2017053); 江苏省水利科技重大技术攻关项目(2016007)
作者简介:窦超银(1982—),男,高级工程师,主要从事节水灌溉理论与技术、农业水土资源高效利用研究工作。
更新日期/Last Update: 2019-07-15