| 引用本文: | 唐德秀,李毅,刘俸,等.土壤斥水性对不同植物种子发芽率的影响[J].灌溉排水学报,2018,37(8):83-90. |
| TANG Dexiu,LI Yi,LIU Feng,et al.土壤斥水性对不同植物种子发芽率的影响[J].灌溉排水学报,2018,37(8):83-90. |
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| 摘要: |
| 【目的】研究斥水性对不同类型植物种子发芽率的影响。【方法】以4种类型、共16种植物种子为试验材料，选用了4种WDPT（water drop penetration time，滴水穿透时间）分别为1、7、12、16 s的塿土土壤进行试验，研究了土壤斥水性对开始发芽时间及种子发芽率的影响。【结果】①土壤斥水性对植物的开始发芽时间存在影响：花草类、作物类和蔬菜类植物种子的开始发芽时间随土壤斥水性的增强而延迟，树木类植物种子的开始发芽时间受土壤斥水性的影响规律不明显；②在试验的第20天，蔬菜类、花草类、树木类和作物类植物在亲水性土壤中的平均发芽率分别为30.00%、43.75%、15.00%和50.83%，均高于斥水性土壤中的发芽率，且WDPT越大发芽率越低。【结论】土壤斥水性对种子发芽率的影响效果在蔬菜类、花草类和作物类植物中比较明显，而树木类植物受土壤斥水性的影响不大。土壤斥水性对大部分植物都有影响，但对油松、油菜作用效果不明显。 |
| 关键词: 土壤斥水性； 滴水穿透时间； 植物种类； 发芽率； 开始发芽时间 |
| DOI：10.13522/j.cnki.ggps.2017.0380 |
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| Effects of Soil Repellency on Germination of Different Plant Seeds |
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TANG Dexiu, LI Yi, LIU Feng, WANG Yichen
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1.College of Water Conservancy and Architectural Engineering, Northwest A & F University, Yangling 712100, China; 2. Institute of Water-saving Agriculture in Arid Areas of China (IWSA), Northwest A & F University, Yangling 712100, China; 3. Key Laboratory of Agriculture, Ministry of Education, Northwest A & F University, Yangling 712100, China；4. Sichuan Water Resources and Hydroelectric Investigation & Design Institute, SWHI, Chengdu 610000, China
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| Abstract: |
| 【Objective】 Soil repellency affects the ability of soil to retain and conduct water, and the purpose of this paper is to study its impact on germination of different plant seeds. 【Method】 We examined seeds of 16 species in four types of plants. The soil hydrophobicity was characterized by the water drop penetration time (WDPT). Soils with WDPT of 7 s, 12 s and 16 s were tested, and the control was a hydrophilic soil. In the experiments, we measured the germination time and germination rate of the seeds. 【Result】①Soil repellency affected initiation of the germination of most seeds. Increasing soil repellency delayed the initiation of germination of seeds of flowers, arable crops and vegetables, but had negligible impact on germination of tree seeds. ②The average germination rate of seeds of vegetables, flowers, trees and crops in hydrophilic soil was 30.00% and 43.75%, 15.00% and 50.83% respectively, while in repellent soil, the germination rate of all seeds decreased as the WDPT increased. 【Conclusion】 Soil repellency affects germination of seeds of vegetables, flowers and crops more than the seeds of trees, especially the seeds of Chinese red pine and rape which are not sensitive to soil hydrophobicity. |
| Key words: soil water repellency; WDPT ; plant species; germination rate; initiation germination time |
