不同灌排模式对避雨番茄产量及水分利用效率的影响

Effects of Various Irrigation and Drainage Patterns on Yield and Water Use Efficiency of Tomato under Rain Shelter

通过避雨栽培试验,研究了不同灌排模式对土壤水分含量、番茄的产量和水分利用效率的影响。结果表明:在番茄生育期间,各处理间的土壤含水量差异逐渐增大,在成熟采收期以灌水量最小处理的土壤含水量最低;在整个生育期间,地下水位深度总体上表现为暗管埋深80 cm>暗管埋深60 cm>无暗管埋置;暗管埋置加深可以减少番茄植株的耗水量;在相同暗管埋深下,番茄产量随着灌水量的减少有不同程度的下降;适当的水分亏缺可以提高番茄的水分利用效率。

Through a cultivation experiment of tomato under rain shelter, the effects of various irrigation and drainage patterns on the soil water content, and the yield and water use efficiency of tomato were studied. The results indicated that： during the growth and development of tomato, the difference in soil water content among various treatments increased gradually; at the maturing and harvest stage~, the soil water content was the lowest in the treatment with the minimum irrigation amount. In the whole growth and developmental period of tomato, the depth of the underground water level in different treatments generally showed the following order： underground pipe depth 80 cm 〉 underground pipe depth 60 cm 〉 no underground pipe buried; increasing the depth of underground pipe could reduce the water consumption of tomato plants ; under the condition of the same underground pipe depth, the tomato yield was reduced by the decrease in the irrigation amount; the suitable water deficit could improve the water use efficiency of tomato plants.