| 陈萍,何文寿.不同施肥配比对宁夏盐碱土壤油用向日葵产量的影响[J].干旱地区农业研究,2011,29(1):108~114 |
| 不同施肥配比对宁夏盐碱土壤油用向日葵产量的影响 |
| The effects of different fertilization structure on yields of sunflower in saline alkali soil |
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| DOI：10.7606/j.issn.1000-7601.2011.01.20 |
| 中文关键词: 盐碱地 向日葵 施肥量 生长性状 |
| 英文关键词:saline and alkali soil sunflower fertilizer efficiency growth traints |
| 基金项目:国家科技支撑计划课题(2007BAC08B03)部分研究内容 |
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| 中文摘要: |
| 研究了不同施肥配比对宁夏盐碱土壤向日葵产量的影响，建立了一元二次肥料效应函数方程。结果表明：对碱化土壤施氮量达到10.56 kg/667m2时，产量达到最大值183.2 kg/667m2；当施磷量达到5.71 kg/667m2时，产量达到最大值156.9 kg/667m2；最高产量施肥配方氮磷钾配比为10.56∶5.71∶3，最佳经济产量施肥配方氮磷钾配比为7.51∶4.44∶3。对盐化土壤当施氮量达到10.51 kg/667m2时，产量达到最大值222.6 kg/667m2；当施磷量达到5.78 kg/667m2时，产量达到最大值195.8 kg/667m2，最高产量施肥配方氮磷钾配比为10.51∶5.78∶3，最佳经济产量施肥配方氮磷钾配比为7.47∶4.49∶3。 |
| 英文摘要: |
| Experiments were conducted to study the effects different fertilization rate on the yields of sunflower growing in saline and alkali soil and to establish a functional equation of fertilizer efficiency. The results show that for the alkali soil: if nitrogen reached 10.56 kg/667m2, the production reached the maximum 183.2 kg/667m2; and if the phosphorus reached 5.71 kg/667m2, the production
reached the maximum 156.9 kg/667m2; and for the saline soil: if nitrogen reached 10.51 kg/667m2, the production reached the maximum 222.6 kg/667m2; and if the phosphorus reached 5.78 kg/667m2, the production reached the maximum 195.8 kg/667m2. Therefore: for the maximum production, the fertilization ratio among nitrogen, phosphate, and potash is 10.51∶5.78∶3, while the best economic yield's fertilization ratio among nitrogen, phosphate, and potash is 7.47∶4.49∶3. |
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