| 杂交稻氮素营养和氮肥效应的研究 Ⅰ.氮肥的增产效果和杂交稻的需氮规律 |
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| 引用本文： | 戈乃鈖,张道勇,马淑芳,张耀栋,裴保义.杂交稻氮素营养和氮肥效应的研究 Ⅰ.氮肥的增产效果和杂交稻的需氮规律[J].南京农业大学学报,1986(4). |
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| 作者姓名： | 戈乃鈖 张道勇 马淑芳 张耀栋 裴保义 |
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| 作者单位： | 南京农业大学土壤农化教研组
(戈乃鈖，张道勇，马淑芳，张耀栋)，南京农业大学土壤农化教研组(裴保义) |
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| 摘 要： | 在施用等量厩肥、磷肥和钾肥的基础上,每小区1公斤尿素(相当于每公顷300公斤)按照由不同生育期分次施肥的四种组合形式施用于杂交稻。其中以70％尿素为基肥,30％为保花肥的处理稻谷产量最高,每公斤尿素氮增产稻谷11.35公斤。杂交稻分蘖阶段和孕穗后期土壤供氮低于作物需氮量,上述配比形式能弥补这两个阶段土壤供氮之不足,适合杂交稻分蘖成穗能力强和穗分化力强的特点。对杂交稻和常规稻的某些氮素营养特点进行比较:(1)两者生产1000公斤稻谷的需氮量相近;(2)杂交稻吸收氮素总量中约35％来自化肥氮,与双季早稻相近而高于单季晚稻;(3)杂交稻生育期内吸收的土壤氮量与单季晚稻相近而比双季早稻高得多。
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| 关 键 词： | 杂交稻 氮素营养 施肥时期 肥效 |
STUDY ON NITROGEN NUTRITION AND YIELD RESPONSE TO NITROGEN FERTILIZER APPLICATION FOR HYBRID RICE I.THE YIELD RESPONSE TO NITROGEN FERTILIZER APPLICATION AND THE NITROGEN REQUIREMENT OF HYBRID RICE |
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| Ge Naifen,Zhang Daoyong,Ma Shufang,Zhang Yaodong and Pei Baoyi.STUDY ON NITROGEN NUTRITION AND YIELD RESPONSE TO NITROGEN FERTILIZER APPLICATION FOR HYBRID RICE I.THE YIELD RESPONSE TO NITROGEN FERTILIZER APPLICATION AND THE NITROGEN REQUIREMENT OF HYBRID RICE[J].Journal of Nanjing Agricultural University,1986(4). |
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| Authors: | Ge Naifen Zhang Daoyong Ma Shufang Zhang Yaodong and Pei Baoyi |
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| Abstract: | With the base treatment of barnyard manure, P fertilizer, and K fertilizer, 1 kg/plot urea (i.e.300kg/hectare) in four different patterns according to application times of various growth stages was applied to hybrid rice. The results showed that the grain yield of the application pattern of separating urea into two portions,70% basal dressing and 300% top dressing at late panicle initiation stage, was the highest among all treatments. The reason of increasing yield was discussed. A comparison was made between hybrid rice and common cultivar in N nutrition. |
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| Keywords: | Hybrid rice Nitrogen nutrition Application times Fertilizer efficiency |
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