| 杨成林1，王丽妍1，赵红玉2.侧深施肥对寒地水稻产量及肥料利用率的影响[J].广东农业科学,2017,44(8):61-65 |
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侧深施肥对寒地水稻产量及肥料利用率的影响 |
| Effects of different application rates of side deep fertilization on yield and fertilizer use efficiency of rice incold region |
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| DOI：10.16768/j.issn.1004-874X.2017.08.010 |
| 中文关键词: 寒地 水稻 侧深施肥 产量 肥料利用率 |
| 英文关键词: cold region rice side deep fertilizing yield fertilizer use efficiency |
| 基金项目: |
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| 摘要点击次数: 2548 |
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| 中文摘要: |
| 为了确保水稻侧深施肥技术在寒地水稻种植过程中发挥最佳的节肥节本增效效果，试验以龙
粳31 水稻品种为试验材料，通过大田随机区组设计研究侧深施肥不用施用量对寒地水稻产量及肥料利用
率的影响。结果表明：除减量20% 外，侧深施肥方式均提高了水稻的产量，其中侧深施肥常量处理由于有
效穗数较多，每穗粒数、结实率和千粒重均较高，产量高达9.97 t/hm2。肥料利用率则表现为，减量后水稻氮
素籽粒生产效率、氮素干物质生产效率和氮肥的偏生产力有所提高，而且氮素农学利用率在减量5% 后达
到最大。说明减量5%～10% 不仅减少了肥料的投入，提高了水稻的产量，同时也提高了肥料的利用效率，
达到了最佳的施肥水平。 |
| 英文摘要: |
| In order to ensure the effect of rice side deep fertilization in the process of rice cultivation in cold
area，and the best effect of section saving and fertilizer saving，the experiment was carried out with Longjing 31 rice
varieties as experimental materials，effects of fertilizer dosages on yield and fertilizer use efficiency of rice in cold
region were studied. The results showed that the yield of rice was increased by the method of side depth fertilization，
and the yield per panicle was higher than that of the spike number per panicle，seed setting rate and grain weight were
higher，so the yield was 9.97 t·hm2. Fertilizer utilization rate showed that the nitrogen production efficiency，nitrogen
dry matter production effiiency and nitrogen fertilizer partial productivity were improved after reducing the yield，
and the nitrogen use efficiency was the highest after 5% reduction，ndicating that the reduction of 5% -10% not only
reduced the input of fertilizer，increased the yield of rice，but also improved the efficiency of fertilizer use，to achieve
the best level of fertilization. |
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