Abstract:

By studying the lower limit of suitable irrigation of Cerasus humilis under drip irrigation, the proper irrigation quota of C. humilis in the sandy loam of northwest central arid region of China was determined. The results showed that the growth index of C. humilis was faster in the early stage and slower in the middle stage, and the difference was significant with the aggravation of water stress. Under the condition of 55% lower limit of irrigation, plant growth performance was the best, plant height, stem diameter, number of leaves and average fruit stem growth were 50 cm, 5.82 mm, 56 leaves and 20.25 mm, respectively, single fruit weight was 15.54 g, and yield per plant was 229.02 g, which was significantly superior to other irrigation levels. In view of the comprehensive benefit, the water condition was suitable for increasing production, excluding the cost of water and electricity, the direct benefit could be 72169.48 yuan/hm². The results showed that the water consumption was 5009.78 m³/hm² and the irrigation quota was 3688.35 m³/hm² when the soil water content was 55% of the lower limit of field water holding capacity, and the condition was beneficial to crop growth and the accumulation of fruit quality factors of C. humilis.

Key words: Cerasus humilis, Water Stress, Drip Irrigation, Growth, Economic Benefit