| 引用本文: | 邵志远,蒋静,张毅,等.不同灌水和施氮处理对燕麦产量、耗水特性和土壤盐分的影响[J].灌溉排水学报,2022,():-. |
| shaozhiyuan,jiangjing,zhangyi,et al.不同灌水和施氮处理对燕麦产量、耗水特性和土壤盐分的影响[J].灌溉排水学报,2022,():-. |
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| 摘要: |
| 【目的】研究盐碱地区不同水氮处理对燕麦耗水特性、产量及土壤盐分的影响。【方法】试验以裸燕麦为研究材料开展盆栽实验，品种为坝莜18号，设置W1（120%ET）和W2（100%ET）两种灌水水平，N0（0）、N1（70 kg·hm-2）、N2（140 kg·hm-2）、N3（210 kg·hm-2）四种施氮水平。【结果】研究结果表明，适当的增大灌水量与施氮量，耗水量与产量会显著（p<0.05）提高，而水分利用效率随着灌水量增大而降低，随施氮量增大则有所增加。施氮量的增加，导致土壤盐分增加；W1灌水处理更有利于淋洗土壤盐分，降低土壤盐分含量。N2处理氮肥农学利用效率和产量最大，分别为2.9 kg·kg-1和1 079.0 kg·hm-2。【结论】灌水量和施氮量分别为120%ET和140 kg·hm-2时，土壤含水率和电导率分别保持在22.02%-23.39%和2.24-3.03 dS·m-1，可以保证该盐碱地区种植燕麦既能提高水氮利用效率，又能取得较佳产量。 |
| 关键词: 水氮调控；燕麦；耗水特性；产量；土壤盐分 |
| DOI： |
| 分类号:S513 |
| 基金项目:山西省土壤环境与养分资源重点实验室开放课题(2019001)；山西省基础研究计划(201901D211101) |
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| Effects of Different Irrigation and Nitrogen Application on Oat Yield, Water Consumption Characteristics and Soil Salinity |
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shaozhiyuan1, jiangjing1, zhangyi2,3,4, zhangchaobo1
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1.Taiyuan University of Technology;2.Houma city Fengcheng Township People'3.'4.s Government
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| Abstract: |
| 【Objective】The effect of different water and nitrogen treatments in saline-sodic areas on water consumption characteristics, yield and soil salinity of oat was investigated.【Method】The pot experiment was carried out with naked oat as the research material. The variety was Ba you 18. Two irrigation rates of W1 (120% ET) and W2 (100% ET) were set, and four nitrogen application rates of N0 (0), N1 (70 kg·hm-2), N2 (140 kg·hm-2) and N3 (210 kg·hm-2) were set.【Result】The results showed that water consumption and yield would be significantly increased with proper increase of irrigation water and nitrogen application（p<0.05）, while water use efficiency would decrease with increase of irrigation water and increase with increase of nitrogen application. Increased nitrogen application resulted in increased soil salinity. W1 irrigation treatment was more conducive to reducing soil salt content, but it would consume a large amount of water. The agronomic use efficiency and yield of nitrogen fertilizer in N2 treatment were the largest, which were 3.2 kg·kg-1 and 1 405.3 kg·hm-2，respectively.【Conclusion】When the irrigation amount and the nitrogen application amount were 120% ET and 140 kg·hm-2 respectively, the soil water content and the electrical conductivity were maintained at 17.84%-21.91% and 2.54-3.12 dS·m-1，respectively, which could guarantee that planting oat in the saline-alkali area could not only improve the water and nitrogen utilization efficiency, but also obtain better yield. |
| Key words: Water and nitrogen regulation; oat; water consumption characteristics; yield; soil salinity |
