| 不同施氮水平对寒地水稻生长发育的影响 |
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| 引用本文： | 姜辉,王秋菊,孟英,王立志.不同施氮水平对寒地水稻生长发育的影响[J].黑龙江农业科学,2010(8):56-59. |
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| 作者姓名： | 姜辉 王秋菊 孟英 王立志 |
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| 作者单位： | 黑龙江省农业科学院,耕作栽培研究所,黑龙江,哈尔滨,150086 |
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| 基金项目： | 国家水稻技术产体系资助项目 |
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| 摘 要： | 采用单因素重复试验研究不同施氮水平对龙稻5号和东农428生长发育及产量的影响。结果表明:氮肥施用量大,水稻生育期延迟,植株晚熟,有效分蘖增加,但过量氮肥导致水稻无效分蘖也相应增加;不同施氮水平对龙稻5号和东农428的穗数.m-2、穗粒数、空瘪粒、千粒重及产量影响差异显著,龙稻5号的穗数.m-2随施氮量的增加而增加,穗粒数、千粒重、产量在施氮水平0~135 kg.hm-2随施氮量的增加而增加,但施氮量达到175 kg.hm-2时,穗粒数下降,空瘪粒增高;东农428也具有相同的变化趋势。
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| 关 键 词： | 水稻 氮肥 产量 品质 |
Study of Different Nitrogen Level on Rice Growth at Cold Area |
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| JIANG Hui,WANG Qiu-ju,MENG Ying,WANG Li-zhi.Study of Different Nitrogen Level on Rice Growth at Cold Area[J].Heilongjiang Agricultural Science,2010(8):56-59. |
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| Authors: | JIANG Hui WANG Qiu-ju MENG Ying WANG Li-zhi |
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| Institution: | (Grop Tillage and Cultivation Institute of Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang 150086) |
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| Abstract: | The effect of different nitrogen levels on rice yield and quality of Longdao No. 5 and Dongnong 428 through single factors experimental design. The result showed that the growing period of rice was delayed with the nitrogen level increased, effective tillers was increased, but excessive nitrogen fertilizer led to ineffective tillers also increased, the differences were significant by different nitrogen levels effect on rice panicle per square meters,grains per spike, air shriveled grain, 1000-grain weight and yield. The panicle per square meters of Longdao No. 5 was increased with the increasing of nitrogen. During the nitrogen level 0- 135 kg ·hm^-2, the number of grains per spike, 1000-grain weight and yield was increased with the amount of nitrogen increasing, while nitrogen level in 175 kg ·hm^-2 the number of grains per spike was declined and air shriveled grain was high,Dongnong 428 had the same trend. |
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| Keywords: | rice nitrogen yield quality |
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