یاسین صالحی - گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه تبریز
داود زارع حقی - گروه علوم ومهندسی خاک، دانشکده کشاورزی، دانشگاه تبریز
عادل دباغ محمدی نسب - گروه اکوفیزیولوژی گیاهی، دانشکده کشاورزی دانشگاه تبریز
محمدرضا نیشابوری - گروه علوم و مهندسی خاک، دانشکده کشاورزی، دانشگاه تبریز

Deficit irrigation is an optimized solution in which the plants are deliberately allowed to reduce their crop by receiving less water than needed. Combined cultivation is a sustainable and efficient system that can increase water use efficiency by increasing the productivity of soil and water resources. In this regard, a factorial experiment in a completely randomized design with two factors in three replications was carried out. The first factor was three types of cultivars: Monoculture tomato, Monoculture basil  and intercropping  of ۵۰% tomato and ۵۰% basil, and the second factor was four irrigation periods including irrigation without water stress in the root zone ۰.۸FC irrigation when the soil moisture in the root zone was about ۰.۷FC, ۰.۵FC, ۰.۳FC. The results showed that the highest water use efficiency based on dry matter yield was obtained, in intercropping at moisture level of ۰.۵FC. The highest dry matter yield and storability of tomato plant were obtained in intercropps and the highest dry and wet matter yield of the basil plant were obtained in monoculture. The Land equivalent ratioat all levels of moisture was greater than ۱, the highest (LER = ۲.۱) was obtained at a non-stressed levels. Intercropping and irrigation up to ۰.۵FC level for two basil and tomato plants in addition to having the proper yield, has been able to prevent large amounts of water from being wasted.

کارآیی مصرف آب, کم آبیاری, کشت مخلوط, گوجه­فرنگی, ریحان