| 深施氮肥(15N标记尿素)对稻田水层化学性质的影响及水稻对深施氮肥的回收率 |
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| 引用本文： | 曹志洪,S. K. 迪达塔.深施氮肥(15N标记尿素)对稻田水层化学性质的影响及水稻对深施氮肥的回收率[J].土壤学报,1983,20(3):253-261. |
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| 作者姓名： | 曹志洪 S. K. 迪达塔 |
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| 作者单位： | 中国科学院南京土壤研究所;国际水稻研究所 |
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| 摘 要： | 碳铵粒肥深施是提高氮素回收率,增加水稻等多种作物产量的合理施肥方法之一1-4,11].国际稻田肥力和肥料评价纲(INSFFER)在南亚、东南亚等十余个稻产国家的试验表明尿素粒肥深施是增产增收的经济施肥法12].
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EFFECTS OF FERTILIZATION METHODS ON PROPERTIES OF THE WATER IN RICE FIELDS AND RECOVERY OF APPLIED N (15N LABELLED UREA) BY LOWLAND RICE |
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| Cao Zhihong and S. K. De Datta.EFFECTS OF FERTILIZATION METHODS ON PROPERTIES OF THE WATER IN RICE FIELDS AND RECOVERY OF APPLIED N (15N LABELLED UREA) BY LOWLAND RICE[J].Acta Pedologica Sinica,1983,20(3):253-261. |
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| Authors: | Cao Zhihong and S K De Datta |
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| Institution: | Institute of Soil Science, Academia Sinica;International Rice Researth Intitute |
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| Abstract: | Studies were conducted on the effects of application methods on the recovery of fertilizer N by rice plant (Oryza sativa L.) using 15N labeled urea in microplots at the International Rice Research Institute (IRRI) in 1981.Uniform placement with prilled urea and point placement with urea supergranule (SGU) gave the highest yields(6.4t/ha) with the efficiency of 51Kg rough rice/Kg N in dry season.IN wet season,Point placement with SGU produced the highest yield (4.4t/ha) with the efficiency of 40 Kg rough rice/kg N. |
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