不同覆盖措施对减少枣林休眠期土壤水分损失的影响

针对黄土丘陵半干旱区林地土壤干化缺水严重的现象,利用2012-2015年3种覆盖措施下土壤水分定位实测数据,探讨和分析全年覆盖措施对枣林休眠期土壤水分损失的影响。结果表明：休眠期是枣林地土壤水分损失的重要时期,无覆盖枣林地土壤水分损失85.64-92.34 mm,是同期降雨量的2.12倍。当地枣林地土壤水分损失的土层深度基本在0-200 cm范围。在0-200 cm范围土壤垂直剖面上,休眠期3种覆盖措施下土壤水分损失均呈现随深度增加而均匀减少的规律。休眠期0-200 cm土层秸秆覆盖、地膜覆盖和石子覆盖土壤水分总损失量分别较裸地减少38.32、50.56、40.48 mm。覆盖措施可以促进休眠...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 14; pp. 153 - 160
Main Author 靳姗姗 汪星 汪有科 佘檀
Format Journal Article
LanguageChinese
Published 中国科学院教育部水土保持与生态环境研究中心,杨凌,712100%中国科学院教育部水土保持与生态环境研究中心，杨凌 712100 2016
西北农林科技大学水利与建筑工程学院，杨凌 712100%西北农林科技大学水利与建筑工程学院,杨凌,712100
Subjects
休眠期
土壤水分
干旱
枣林
覆盖
覆盖
mulching
jujube land
土壤水分
干旱
soil moisture
drought
休眠期
枣林
dormancy period
soil water
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.14.021

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Summary:针对黄土丘陵半干旱区林地土壤干化缺水严重的现象,利用2012-2015年3种覆盖措施下土壤水分定位实测数据,探讨和分析全年覆盖措施对枣林休眠期土壤水分损失的影响。结果表明：休眠期是枣林地土壤水分损失的重要时期,无覆盖枣林地土壤水分损失85.64-92.34 mm,是同期降雨量的2.12倍。当地枣林地土壤水分损失的土层深度基本在0-200 cm范围。在0-200 cm范围土壤垂直剖面上,休眠期3种覆盖措施下土壤水分损失均呈现随深度增加而均匀减少的规律。休眠期0-200 cm土层秸秆覆盖、地膜覆盖和石子覆盖土壤水分总损失量分别较裸地减少38.32、50.56、40.48 mm。覆盖措施可以促进休眠期土壤水分向深层运移。
Bibliography:To promote development of the forestry and alleviate soil water depletion in forest land, a better understanding of the effects of different mulching patterns on soil moisture region, and further seeking reasonable soil conservation measures in loess hilly-gully are paramount important. As the severe soil water depletion existed in forest land in the semiarid area of the Loess Plateau, the soil water contents under 3 different mulching patterns in jujube orchard were measured using a neutron probe（CNC100 DR, ChaoN eng, China） that had been calibrated using standard methods. From March 2012 to October 2015, volumetric soil water content was measured 3 times per month. Measurements were made at the depth increment of 0.1 and 0.2 m in the 0–1 and 1–5 m soil layer, respectively. Meanwhile, the meteorological data were collected from meteorological station near the experimental plots. The objective of this study was to investigate the effects of mulching patterns on soil water loss in jujube orchard during dormanc
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.14.021