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| 抗旱性复混肥对土壤物理性状、持水量和马铃薯经济效益的影响 |
| The Effects of Drought Resistant Compound Fertilizer on Soil Physical Property, Soil Moisture Capacity and Economic Benefi t of Potato |
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| DOI： |
| 中文关键词: 抗旱性复混肥 土壤物理性状 土壤持水量 马铃薯 经济效益 |
| 英文关键词:Keywords: drought resistant compound fertilizer soil physical property soil moisture capacity potato economic benefit |
| 基金项目:甘肃省重点研发计划项目（17YF1NG050）；甘肃省科技计划资助。 |
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| 中文摘要: |
| 采用田间试验方法，研究抗旱性复混肥配方及其对土壤物理性质、持水量和马铃薯经济效益的影响，以期筛选出抗旱性复合肥最佳配方和施用量。结果表明：影响马铃薯产量的因素由大到小依次为：马铃薯专用肥＞废弃物组合肥＞保水剂，抗旱性复合肥最佳配方组合为废弃物组合肥3 000 kg/hm2、保水剂37.50 kg/hm2、马铃薯专用肥2 230 kg/hm2。随着抗旱性复混肥施用量的增加，土壤总孔隙度、持水量、马铃薯块茎质量和产量在增加，土壤容重在降低。经回归统计分析，抗旱性复混肥与马铃薯产量间的回归方程为：y＝28.87＋1.771 3x－0.035 4x2，最佳施肥量为5.28 t/hm2，计算结果与田间施用抗旱性复混肥5.28 t/hm2相吻合。 |
| 英文摘要: |
| Abstract: In order to screen out the optimum formula and application amount of drought resistant compound fertilizer, field plot experiments were conducted to study the formula and effects of drought resistant compound fertilizer on soil physical property, soil moisture capacity and economic benefit of potato. The results showed that the factors affecting the yield of potato from big to small were potato special fertilizer, waste combined fertilizer, water retaining agent. The optimum combination was waste combined fertilizer 3 000 kg/hm2, water retaining agent 37.50 kg/hm2, potato special fertilizer 2 230 kg/hm2. With the increasing of application amount of drought resistant compound fertilizer, soil total porosity, soil moisture capacity, potato tuber weight and yield were increased, while bulk density was decreased. The regression equation between drought resistant compound fertilizer and potato yield was y＝28.87＋1.771 3x－0.035 4x2, and the optimum fertilization amount was 5.28 t/hm2. The calculated results were consistent with the application amount of 5.28 t/hm2 for drought resistant compound fertilizer in the field experiment. |
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