不同喷灌定额下垄作沟播油葵根系生长及分布特征
S275.3; 垄作沟播喷灌技术是集垄作沟播与喷灌技术为一体的节水栽培技术.以不同灌水定额各设4个处理(灌水定额分别为24 mm、30 mm、36 mm、42 mm,灌水5次),以常规覆膜喷灌为对照(灌水定额42 mm,灌水5次).通过测定不同灌水处理下垄作沟播油葵根系生长及分布特征等指标,分析了不同灌水处理对油葵根系纵向、横向生长及根系在土壤中的分布情况,比较不同喷灌处理对油葵根系生长的影响.研究表明,垄作沟播处理灌溉水垂直入渗较深,根系纵向生长长度均高于对照处理.对照处理根系横向生长集中在地下0～20 cm,生长长度均长于垄沟处理,但在20 cm以下根系较少,生长长度低于垄沟处理.对照处理...
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| Published in | 节水灌溉 no. 2; pp. 28 - 33 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
甘肃省水利科学研究院,兰州730000
10.02.2022
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1007-4929 |
| DOI | 10.3969/j.issn.1007-4929.2022.02.005 |
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| Abstract | S275.3; 垄作沟播喷灌技术是集垄作沟播与喷灌技术为一体的节水栽培技术.以不同灌水定额各设4个处理(灌水定额分别为24 mm、30 mm、36 mm、42 mm,灌水5次),以常规覆膜喷灌为对照(灌水定额42 mm,灌水5次).通过测定不同灌水处理下垄作沟播油葵根系生长及分布特征等指标,分析了不同灌水处理对油葵根系纵向、横向生长及根系在土壤中的分布情况,比较不同喷灌处理对油葵根系生长的影响.研究表明,垄作沟播处理灌溉水垂直入渗较深,根系纵向生长长度均高于对照处理.对照处理根系横向生长集中在地下0～20 cm,生长长度均长于垄沟处理,但在20 cm以下根系较少,生长长度低于垄沟处理.对照处理0～10 cm根系干重占总根干重的比例均高于垄沟处理,而20 cm以下垄沟处理明显高于对照处理.油葵根重密度随生育期在垂直土体中呈"T"形分布,灌水量越大,根重密度越大,随着土层深度增加,根重密度逐渐减小.与传统覆膜平作喷灌相比,垄作沟播喷灌可促进油葵根系生长,增加根系干物质,充分利用水肥资源,促使油葵地上部分生长更加旺盛,对提高产量有积极作用,可逐步推广. |
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| AbstractList | S275.3; 垄作沟播喷灌技术是集垄作沟播与喷灌技术为一体的节水栽培技术.以不同灌水定额各设4个处理(灌水定额分别为24 mm、30 mm、36 mm、42 mm,灌水5次),以常规覆膜喷灌为对照(灌水定额42 mm,灌水5次).通过测定不同灌水处理下垄作沟播油葵根系生长及分布特征等指标,分析了不同灌水处理对油葵根系纵向、横向生长及根系在土壤中的分布情况,比较不同喷灌处理对油葵根系生长的影响.研究表明,垄作沟播处理灌溉水垂直入渗较深,根系纵向生长长度均高于对照处理.对照处理根系横向生长集中在地下0～20 cm,生长长度均长于垄沟处理,但在20 cm以下根系较少,生长长度低于垄沟处理.对照处理0～10 cm根系干重占总根干重的比例均高于垄沟处理,而20 cm以下垄沟处理明显高于对照处理.油葵根重密度随生育期在垂直土体中呈"T"形分布,灌水量越大,根重密度越大,随着土层深度增加,根重密度逐渐减小.与传统覆膜平作喷灌相比,垄作沟播喷灌可促进油葵根系生长,增加根系干物质,充分利用水肥资源,促使油葵地上部分生长更加旺盛,对提高产量有积极作用,可逐步推广. |
| Author | 刘文光 吴婕 王文娟 丁林 |
| AuthorAffiliation | 甘肃省水利科学研究院,兰州730000 |
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| Keywords | 垄作沟播;垄沟集雨;喷灌定额;根系生长;根系分布;油葵 |
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| Snippet | S275.3; 垄作沟播喷灌技术是集垄作沟播与喷灌技术为一体的节水栽培技术.以不同灌水定额各设4个处理(灌水定额分别为24 mm、30 mm、36 mm、42 mm,灌水5次),以常规覆膜喷灌为对照(灌水定额42... |
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| Title | 不同喷灌定额下垄作沟播油葵根系生长及分布特征 |
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