咸水滴灌对盐地碱蓬生育规律的影响  

Effect of saline water drip irrigation on the growth regularity of Suaeda salsa

作　　者：王宁 赵振勇[1] 张心怡 刘四海 张科[1] 胡明芳[1] WANG Ning;ZHAO Zhenyong;ZHANG Xinyi;LIU Sihai;ZHANG Ke;HU Mingfang(Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi 830011,Xinjiang,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院新疆生态与地理研究所,新疆乌鲁木齐830011 [2]中国科学院大学,北京100049

出　　处：《草业科学》2023年第10期2528-2538,共11页Pratacultural Science

基　　金：国家重点研发计划项目(2018YFE0207200);国家重点研发计划(2022YFD1900101);宁夏回族自治区重点研发计划(2022BBF03036)。

摘　　要：盐生植物是资源化利用盐碱地和地下咸水的有效工具,对干旱半干旱区重度盐渍生境的植被建设和生态恢复有重要意义。本研究以盐地碱蓬(Suaeda salsa)为研究对象,开展为期1年的咸水滴灌定位试验,共设5个灌溉梯度(CK、10、20、30、40 g·L^(-1)),研究咸水滴灌下盐地碱蓬的生长规律。结果表明:盐地碱蓬的耐盐性随生育期进程逐渐增强。盐地碱蓬在萌发期和幼苗生长阶段对盐最为敏感,可以选择成苗率作为评价盐地碱蓬耐盐性的指标。花蕾期-结实期是盐地碱蓬干物质累积的主要时期,在这一时期前增加水肥投入可保证植株地上部的长势和产量,从而提升土壤改良效果。盐地碱蓬具有较强的耐盐性,可用于干旱半干旱地区重度盐碱荒地的植被重建和景观建设。Halophytes are effective tools for resource utilization of saline-alkali land and underground salt water,and are significant for revegetation and ecological restoration of arid and semi-arid areas.In this study,Suaeda salsa was used as the research object to carry out a one-year saline water drip irrigation experiment with five treatments(CK,10,20,30,and 40 g·L^(-1))to study the growth characteristics of S.salsa under saline water drip irrigation.The results showed that the salt tolerance of S.salsa increased gradually with the growth period.S.salsa is most sensitive to salt during germination and in the seedling growth stage,and the seedling percentage can be selected as an index to evaluate the salt tolerance of S.salsa.The flower bud to fruiting stages are the main periods of dry matter accumulation in S.salsa.Increasing the input of water and fertilizer before this period can ensure the aboveground growth and yield of the plant to improve the effect of soil amendment.S.salsa has a strong salt tolerance and can be used for revegetation and landscape construction of severe saline wasteland in arid and semi-arid areas.

关 键 词：咸水资源利用 生物学性状 植被重建 盐碱地 耐盐性 土壤改良 生态治理 

分 类 号：S156.4[农业科学—土壤学]