REDUCTION IN GROWTH AND YIELD OF JERUSALEM-ARTICHOKE CAUSED BY SOIL-SALINITY
REDUCTION IN GROWTH AND YIELD OF JERUSALEM-ARTICHOKE CAUSED BY SOIL-SALINITY
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DOI：
10.1007/bf00190526
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发表时间：
1991-01-01
影响因子：
3
通讯作者：
WEST, DW
中科院分区：
文献类型：
--
作者：
NEWTON, PJ;MYERS, BA;WEST, DW
在温室和田间试验中，根据地上部分和块茎的生物量评估了灌溉菊芋（Helianthus tuberosus L.）的耐盐性。温室试验中灌溉水的盐度范围为0.7至12 dS m-1，田间试验中灌溉水的盐度范围为0.2至10 dS m-1。温室种植植物的块茎干物质以及温室种植和田间种植植物的地上部分的产量反应属于 Maas 和 Hoffman (1977) 的中等耐受类别。然而，重粘壤土田间的块茎产量属于中度敏感类别，由方程 Y = 100-9.62 (EC(e) - 0.4) 描述，其中 Y = 产量 (t ha-1)，以非盐条件下的百分比表示，EC(e) = 根区 (0-30 cm) 饱和提取物的电导率。叶片Cl浓度随外部盐度的增加呈线性增加，且从块茎到茎再到叶逐渐增加。相比之下，尽管茎钠含量始终较高，但除最高盐度外，叶钠含量仍然较低。表明了限制叶片 Na 达到一定外部盐度的某种机制。
The salt tolerance of irrigated Jerusalem artichokes (Helianthus tuberosus L.) was assessed in terms of biomass of both above ground parts and tubers in greenhouse and field trials. Salinity of irrigation water ranged from 0.7 to 12 dS m-1 in the greenhouse trial and from 0.2 to 10 dS m-1 in the field trial. Yield response of the dry matter of tubers of greenhouse-grown plants and of above ground parts of greenhouse-grown and field-grown plants, fell within the moderately tolerant category of Maas and Hoffman (1977). However, tuber yields in the field on a heavy clay loam fell within the moderately sensitive category, described by the equation, Y = 100-9.62 (EC(e) - 0.4), where Y = yield (t ha-1) as a % of that under non-saline conditions and EC(e) = electrical conductivity of saturation extract in the rootzone (0-30 cm). The Cl concentration of leaves increased linearly with increasing external salinity and increased from tubers to stems to leaves. In contrast, leaf Na remained low except at the highest salinities, despite consistently higher stem Na; indicating some mechanism for restriction of leaf Na up to a certain external salinity.