干旱区生态环境知识资源中心(Arid): 灌水定额对旱区苹果园土壤水盐再分布的影响

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	灌水定额对旱区苹果园土壤水盐再分布的影响
其他题名	Effects of irrigation quota on moisture and salt redistribution in apple orchard soil in arid region
	郭全恩 1; 王益权 2; 南丽丽 1; 曹诗瑜 3
来源期刊	应用生态学报
ISSN	1001-9332
出版年	2013
卷号	24 期号:7 页码:1863-1870
中文摘要	以甘肃省秦安县盐渍化苹果园土壤为研究对象,采用大田试验的方法在苹果花期研究了不同灌水定额(0、900、1800、2700、3600 m~3·hm~(-2))对果园0~100 cm土层水盐再分布(10、20、30 d)的影响.结果表明:随着灌水定额的增大,Na~+淋溶深度增加,且再分布的滞后效应明显;Ca~(2+)的零通量面逐渐消失;Mg~(2+)的零通量面面宽逐渐增加;Cl~-淋溶迁移方式由波动式变为直线式,蒸发迁移方式由波动式变为阶梯式;SO_4~(2-)再分布方式呈点穴式;HCO_3~-再分布累积层位逐渐上移.在地下水位埋藏较深的土壤剖面中部存在一个盐分零通量面,在水分再分布过程中,盐分零通量面的位置逐渐向下移动,体现旱地土壤水分耗竭特征.灌水定额在2700~3600 m~3·hm~(-2)时,灌溉有利于土壤剖面0~100 cm土层盐分和水溶性Na~+的淋洗;灌水定额在1800 m~3·hm~(-2)以下时,灌溉加速了土壤表层盐分的累积.从钠盐淋洗和节水两方面综合考虑,旱区盐渍化果园土壤春季适宜的灌水定额为1800~2700 m~3·hm~(-2).
英文摘要	Taking the salinized apple orchard soil in Qinan County of Gansu Province, Northwest China as test object, a field experiment was conducted to study the effects of different irrigation quota (0, 900, 1800, 2700, and 3600 m~3·hm~(-2)) on the redistribution of moisture and salt in 0-100 cm soil profile on the 10, 20, and 30 d during apple florescence stage. With the increase of irrigation quota, the leached depth of Na~+ increased and its hysteretic effect of redistribution was more obvious, the zero flux plane of Ca~(2+) disappeared gradually, the scope of the zero flux plane of Mg~(2+) increased gradually, the leaching migration mode of Cl~- changed from fluctuation to straight line and the evaporation-migration changed from fluctuation to ladder, the redistribution pattern of SO_4~(2-) showed point, and the position of redistribution and accumulation of HCO_3~- shifted gradually from the bottom to upper layer in soil profile. In the middle of the soil profile with deeper groundwater table, there existed a zero flux plane of salt, which shifted gradually from the upper layer to the bottom during the redistribution of moisture in soil profile, embodying the characteristics of moisture depletion in upland soils. When the irrigation quota was between 2700 and 3600 m~3·hm~(-2), irrigation was helpful to the leaching of salt and water soluble Na~+ in the 0-100 cm soil profile. However, when the irrigation quota was<1800 m~3·hm~(-2), irrigation accelerated the salt accumulation in surface soil. Therefore, from the viewpoints of salt leaching and water-saving, an irrigation quota of 1800-2700 m~3·hm~(-2) in spring would be more appropriate for the salinized apple orchard soil in arid regions.
中文关键词	灌水定额 ; 果园土壤 ; 水盐再分布 ; 零通量面 ; 水溶性钠储量
英文关键词	irrigation quota orchard soil moisture and salt redistribution zero flux plane water-soluble Na~+ storage
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Agriculture
CSCD记录号	CSCD:4896059
来源机构	西北农林科技大学 ; 甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/230410
作者单位	1.甘肃农业大学, 甘肃省干旱生境作物学重点实验室, 兰州, 甘肃 730070, 中国; 2.西北农林科技大学资源环境学院, 杨凌, 陕西 712100, 中国; 3.甘肃省农业科学院土壤肥料与节水农业研究所, 兰州, 甘肃 730070, 中国
推荐引用方式 GB/T 7714	郭全恩,王益权,南丽丽,等. 灌水定额对旱区苹果园土壤水盐再分布的影响[J]. 西北农林科技大学, 甘肃农业大学,2013,24(7):1863-1870.
APA	郭全恩,王益权,南丽丽,&曹诗瑜.(2013).灌水定额对旱区苹果园土壤水盐再分布的影响.应用生态学报,24(7),1863-1870.
MLA	郭全恩,et al."灌水定额对旱区苹果园土壤水盐再分布的影响".应用生态学报 24.7(2013):1863-1870.