干旱区生态环境知识资源中心(Arid): 干旱区膜下滴灌不同灌水和施氮水平对赤霞珠葡萄幼苗氮素代谢和根系发育的影响

Arid

	干旱区膜下滴灌不同灌水和施氮水平对赤霞珠葡萄幼苗氮素代谢和根系发育的影响
其他题名	Effects of water and nitrogen treatments on nitrogen metabolism and root development of Vitis vinifera Cabernet Sauvignon seedlings under mulched drip irrigation in the arid area
	于坤 1; 郁松林 1; 许雯博 1; 符小发 2; 王青风 1; 王文静 1
来源期刊	果树学报
ISSN	1009-9980
出版年	2013
卷号	30 期号:6 页码:975-982
中文摘要	【目的】探讨膜下滴灌不同水氮处理对赤霞珠葡萄(Vitis vinifera L. ’ Cabernet Sauvignon)幼苗氮素代谢和根系发育的影响。【方法】以酿酒葡萄品种赤霞珠葡萄幼苗为材料，在膜下滴灌条件下采用2个水处理（田间持水量60%~90%、50%~90%）和3个氮处理的复因子盆栽实验，分析了不同水处理和施氮方式对赤霞珠葡萄幼苗氮素代谢和根系发育的影响。【结果】在膜下滴灌条件下，3次施氮（5月20日、6月30日、7月30日将NH4N03溶于水后随水供氮，施氮量分别为每株1.5、1、1 g）可以显著提高植株叶片和根系的总氮、铵态氮、硝态氮含量；而水分处理对其影响不显著。同一水分条件下，2次施氮处理52 d后葡萄幼苗叶片和根系的硝酸还原酶(NR)活性、氨同化速率要优于1次施氮。处理后期(83d、116d)，3次施氮的葡萄幼苗叶片和根系NR活性、氨同化速率优于1次和2次施氮。适宜的水分和3次施氮处理可以提高葡萄幼苗根系有效根表面积和体积，增加根尖数，保持生长后期根系超氧化物歧化酶活性(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)等保护酶的活性和较强的氧化还原能力。【结论】适宜的水分处理（田间持水量60%~90%）和3次施氮可以提高植株氮素利用率，促进根系发育和延缓生长后期根系衰老。
英文摘要	【Objective】The aim of the experiment is to study the effects of different water and nitrogen treatments on root development and nitrogen metabolism of Vitis vinifera L. Cabernet Sauvignon’ seedlings under mulched drip irrigation.【Method】Factorial experiment with two water-treatments(field capacity 60% to 90% and 50% to 90%)and three nitrogen -treatments on Cabernet Sauvignon seedlings was conducted under mulched drip irrigation. 【Result】Under mulched drip irrigation， the content of total nitrogen，ammonium nitrogen,nitrate nitrogen in leaf and root were increased after three -time topdressing of nitrogen （in May 20,June 30,July 30,NH4N03 was dissolved in water and applied to the seedlings with 1.5 g· plant~(-1), 1 g·plant~(-1),1 g ? plant~(-1) respectively) .There were significant differences in effects on total nitrogen content in grape leaves and roots between nitrogen treatments,but no significant differences between water treatments. Under the same water condition,nitrate reductase (NR) activity and ammonia assimilation rate in leaf and root of grape seedlings were better in two-time topdressing nitrogen application than one-time treatment 52d after treatment. At the late stage (83 d, 116 d),NR activity, ammonia assimilation rate were better in three-time topdressing nitrogen application than one-time and two-time treatments. It ws observed that suitable water treatment and three-time topdressing nitrogen application not only improved the effective root surface area and volume,but also increased the number of root tips. In addition,superoxide dismutase (SOD), peroxidase(POD) and catalase(CAT) protective enzyme activity and redox capacity kept at higher levels at late growth stage. 【Conclusion】Suitable water treatment (field capacity 60%-90%)and three-time topdressing nitrogen application increased the utilization efficiency of nitrogen, promoted the development of root system,and delayed root senescence at late growth stage.
中文关键词	葡萄 ; 干旱区 ; 膜下滴灌 ; 氮素代谢 ; 根系
英文关键词	Grape Arid area Mulched drip irrigation Nitrogen metabolism Root
语种	中文
国家	中国
收录类别	CSCD
WOS类目	HORTICULTURE
WOS研究方向	Agriculture
CSCD记录号	CSCD:5007297
来源机构	石河子大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/229757
作者单位	1.石河子大学农学院, 新疆兵团绿洲生态农业重点实验室, 石河子, 新疆 832003, 中国; 2.新疆农业科学院, 乌鲁木齐, 新疆 830091, 中国
推荐引用方式 GB/T 7714	于坤,郁松林,许雯博,等. 干旱区膜下滴灌不同灌水和施氮水平对赤霞珠葡萄幼苗氮素代谢和根系发育的影响[J]. 石河子大学,2013,30(6):975-982.
APA	于坤,郁松林,许雯博,符小发,王青风,&王文静.(2013).干旱区膜下滴灌不同灌水和施氮水平对赤霞珠葡萄幼苗氮素代谢和根系发育的影响.果树学报,30(6),975-982.
MLA	于坤,et al."干旱区膜下滴灌不同灌水和施氮水平对赤霞珠葡萄幼苗氮素代谢和根系发育的影响".果树学报 30.6(2013):975-982.