TUBER YIELD OF JERUSALEM-ARTICHOKE (HELIANTHUS-TUBEROSUS L) IN RELATION TO WATER-STRESS

被引：20

作者：

CONDE, JR

TENORIO, JL

RODRIGUEZMARIBONA, B

AYERBE, L

机构：

[1] Dpto. de Producción y Technología de Alimentos, CIT-INIA, 28080 Madrid

来源：

BIOMASS & BIOENERGY | 1991年 / 1卷 / 03期

关键词：

JERUSALEM ARTICHOKE; TUBER YIELD; INULIN; FRUCTOSE; ALCOHOL; EVAPOTRANSPIRATION; WATER NEEDS; IRRIGATION; WATER STRESS;

D O I：

10.1016/0961-9534(91)90022-5

中图分类号：

S2 [农业工程];

学科分类号：

0828 ;

摘要：

Jerusalem artichoke (Helianthus tuberosus L.) is a crop grown for its inulin rich tubers. Fructose obtained from the tubers may be used as a sweetening agent or as a source of alcohol. As this crop is not widespread, many details about its culture are not known. The present study deals with the water requirements for optimum yield, specially at different growth stages. Field experiments were performed for two years with cultivar "Nahodka". The treatment in which the plants did not suffer any water limitation yielded about 80 t ha-1 fresh weight per year (about 16 t ha-1 dry weight). This implied approximately 1000 dm3 m-2 of irrigation water. Results show that, in the last growth stage, the relative yield deficit was highly affected by the relative evapotranspiration deficit. The relative evapotranspiration was lower than 90% when the plant available water decreased under 25%. The crop showed a certain acclimation to water stress, decreasing the yield only 20% when optimum irrigation was reduced to 50%, and was evenly supplied along the year.

引用

页码：137 / 142

页数：6

共 20 条

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