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| 不同栽培方式对陇东旱作区复种马铃薯土壤温度、农艺性状的影响及产量回归方程的建立 |
| Effects of Different Cultivation Methods on Soil Temperature, Agronomic Traits, and Establishment of a Yield Regression Equation for Multiple-Cropping Potato in Dryland Area of Eastern Gansu |
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| DOI： |
| 中文关键词: 陇东旱作区 复种马铃薯 栽培方式 产量回归方程 |
| 英文关键词:Dryland area of eastern Gansu Multiple-cropping potato Cultivation method Yield regression equation |
| 基金项目:甘肃省农科院重点研发计划项目《陇东旱塬复种马铃薯提质增效技术体系创建与应用》（2024GAAS16-2）；甘肃省科技厅重点研发计划项目《庆阳旱作区复种增产集成技术研究与示范》（24YFNM001）。 |
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| 中文摘要: |
| 为研究不同栽培方式对陇东旱作区复种马铃薯土壤温度、农艺性状及产量的影响，以陇薯7号和青薯9号为对象，开展了露地高垄、平作培土起垄、垄上黑膜覆土、垄沟秸秆覆盖4种栽培方式研究。结果表明,复种马铃薯生育前期，土壤平均温度为垄上黑膜覆土>平作培土起垄> 露地高垄>垄沟秸秆覆盖；陇薯7号在垄沟秸秆覆盖栽培方式出苗、现蕾、开花最早，生育期仅为102 d，茎粗和分枝数较大，产量达22 704.25 kg/hm2。因此，垄沟秸秆覆盖栽培方式生长前期能有效降低地表温度，后期覆盖保温，有利于复种马铃薯生长，产量显著提高。通过对产量影响因子分析，采用逐步回归方法引进和剔除变量，最终建立复种马铃薯产量回归方程Y= -53.211 + 1 405.809 x7+9.296 x5+4.275 x3-29.944 x6。 |
| 英文摘要: |
| To investigate the effects of different cultivation methods on soil temperature, agronomic traits, and yield of multiple-cropping potato in the dryland area of eastern Gansu, an experiment was conducted using ‘Longshu 7’ and ‘Qingshu 9’ as materials under four cultivation methods: open-field high-ridge cultivation, flat planting with soil ridging, black plastic film mulching with soil covering on ridges, and straw mulching in ridge furrows. The results showed that during the early growth stage of multiple-cropping potato, the average soil temperature followed the order of black plastic film mulching with soil covering on ridges > flat planting with soil ridging > open-field high-ridge cultivation > straw mulching in ridge furrows. Under straw mulching in ridge furrows, ‘Longshu 7’ showed the earliest seedling emergence, budding, and flowering; its growth period was only 102 days, with relatively large stem diameter and branch number, and its yield reached 22,704.25 kg/hm2. Therefore, straw mulching in ridge furrows can effectively reduce surface soil temperature during the early growth stage and maintain soil warmth during the later growth stage, thereby promoting the growth of multiple-cropping potato and significantly increasing yield. Through analysis of yield-influencing factors, variables were introduced and removed using stepwise regression, and the final yield regression equation for multiple-cropping potato was established as Y= -53.211 + 1 405.809 x7+9.296 x5+4.275 x3-29.944 x6. |
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