SU Xue-de,LI Ming,GUO Shao-jie,et al.Study on Water and Salt Transport Characteristics for Gobi Soil Under Condition of Grape Drip Irrigation in Dry Region[J].Northern Horticulture,2014,38(19):168-171.
干旱区葡萄滴灌戈壁土壤水盐运移特征研究
- Title:
- Study on Water and Salt Transport Characteristics for Gobi Soil Under Condition of Grape Drip Irrigation in Dry Region
- 文章编号:
- 1001-0009（2014）19-0168-04
- Keywords:
- grape; drip irrigation; Gobi soil; water-salt transport in soil
- 分类号:
- S 663.106
- 文献标志码:
- A
- 摘要:
- 以6年生“克瑞森”葡萄为试材，研究了不同滴水时间葡萄滴灌戈壁土壤水盐运移变化特征，分析了戈壁土壤中水和全盐在水平、垂直方向水盐动态变化规律。结果表明：随滴水时间变化，滴灌葡萄戈壁土壤含水量和含盐量呈规律性变化趋势。在水平方向上，土壤含水量明显随径向距离的变化而变化，土壤水分的最大值出现在滴头下方，并以滴头中央处向外围依次递减；而含盐量随着滴水时间延长离滴头越近处各土层含盐量最低，沿着外围含盐量逐渐增加，在0～40 cm土层处盐分积累最多，在40～60 cm盐分的积累逐渐呈减少状态。在垂直方向上，土壤含水量最大值出现在表层，0～20 cm达到最大值，随着土层深度增加，土壤含水量开始下降；0～20 cm土层含盐量滴水前滴头下最高，盐分积累较多，随着滴水时间的延长，盐分逐渐减低，20～60 cm含盐量最低。因此在滴灌条件下，戈壁土壤水分和盐分具有沿径向分布的规律，水分分布呈洋葱状，盐分分布向洋葱状外围延伸。
- Abstract:
- Taking 6-year-old grape as material,the different drip time of salt and water transport characteristics for Gobi soil under condition of grape drip irrigation were studied,and the Gobi soil water and salt,water and salt dynamics in the horizontal direction and vertical direction were analyzed.The results showed that soil horizontal and vertical direction of the Gobi drip irrigation water salt distribution with the drip irrigation time change Gobi soil moisture content and salinity of grapes were changed regularly.On the horizontal direction,soil moisture content changes obviously along with the change of radial distance,a maximum of soil moisture in drops below the head,and diminishing the center to the periphery,in turn,to drop；And salt as the drop time prolong the nearby the lowest soil salt content,the drop head along the peripheral salt content increases gradually,0～40 cm soil salt accumulation,most in 40～60 cm,salt accumulation in reducing state gradually.On the vertical direction,the maximum soil water content was on the surface,reach maximum 0～20 cm,with the increase of soil depth,soil moisture content began to decline；0～20 cm soil salinity water drops before the highest,salt accumulation was more,with the drip of the extension of time,the salt gradually reduced,20～60 cm minimum salt content.Under the condition of drip irrigation,soil water and salt Gobi was along the radial distribution regularity of the distribution of moisture was onions,salt distribution to the shape of onion peripheral extended.
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备注/Memo
第一作者简介：苏学德（1979-），男，甘肃会宁人，硕士研究生，助理研究员，现主要从事果树栽培生理及育种等研究工作。E-mail：suxuede509@126.com.
基金项目：农业部农垦农技推广专项资助项目（2013355）；新疆生产建设兵团产学研专项资助项目（2010ZX02）。
收稿日期：2014-05-27