| 水稻不同时期施肥比例与产量比较试验 |
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| 引用本文： | 黄尚宁,黄俊,刘甫清,刘安和,李颖,韦放,黄孟西,李桂艳,赵坚丽.水稻不同时期施肥比例与产量比较试验[J].广西农学报,2010,25(5):7-9. |
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| 作者姓名： | 黄尚宁 黄俊 刘甫清 刘安和 李颖 韦放 黄孟西 李桂艳 赵坚丽 |
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| 作者单位： | [1]百色市粮作站,广西530000 [2]田阳县推广站,广西百色市533600 |
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| 摘 要： | 针对百色市水稻氮肥施用不够合理,氮肥利用率普遍偏低的问题,对水稻不同时期施氮量与水稻产量关系进行试验研究。结果表明:不同时期施氮比例对每667m2高峰苗数,有效穗数有明显的影响,随氮肥后期施用比例增加,高峰苗呈递减趋势,而成穗率增加,结实率提高;氮肥基、蘖肥与穗肥比例为6∶4产量最高,比对照增产16.2%;其次是7∶3,比对照增产10.9%;再次5∶5,比对照增产5.0%。
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| 关 键 词： | 水稻 氮肥 施用比例 |
Comparative experiment on fertilization proportion and yield in different periods of rice growth |
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| Institution: | Huang Shang-ning et al(Grain crop station of Baise City,Guangxi 530000,China) |
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| Abstract: | Focusing on irrational N fertilization and lower utilization rate,a comparative experiment on relationship between fertilization proportion and yield in different periods of rice growth was conducted.The results show that N proportions in different periods impact obviously the peak seedling number/667m2 and effective ear number.Along with the proportion increase of N fertilizer in late periods,the peak seedling number is decreasing;ear-bearing tiller rate and setting percentage are increasing.In N fertilization,base tiller fertilizer and ear fertilizer proportion 6∶4 has the highest yield（comparing with control group,16.21% yield increase）,the second is 7∶3（10.5% yield increase） and the third is 5∶5（5.0% yield increase）. |
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| Keywords: | Rice N fertilizer fertilization proportion |
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