根域灌溉技术对华宁柑桔新稍新叶生长影响.

In order to explore the effects of different irrigation amounts on the length and width of new citrus leaves under the pre¬cise root domain irrigation technology, citrus was taken as the research object and set different irrigation amount for irrigation. In the experimental group under the precise root field irrigation, 35, 30, 25L/ (plant • times) were respectively set and irrigated once in sev¬en days； in the control group under the micro - sprinkling irrigation method, 130L/(plant • times) irrigated once in 15 days. After ir¬rigating different amount of water, the growth of slightly new tip of the tree and the length and width of new leaves were recorded. Re¬sults showed that the root domain precision irrigation under different irrigation amount had a significantly influence on the new tip of the tree and the length and width of new leaves. In the 14 days observation period, test II had the best growth potential, the total growth of the new tip of the tree was 72. 1 mm, compared with the control group, the growth volume increased by 17. 7 mm and increased by 32.5% year - on - year. The total growth of new leaf length was 48. 9 mm, increased by 9. 6 mm compared with the control group, in¬creased by 24.4% year - on - year, and the total growth of leaf width was 23. 3 mm, which was higher than that of the control. The growth of the group increased by 5. 3 mm, a year - on - year increase of 29. 4% . Therefore, the irrigation amount of 30 L/( plant • times) under the precise root domain irrigation technology is more suitable for the growth of fresh citrus leaves. [ABSTRACT FROM AUTHOR]