Article source: China Citrus Network Citrus Network
In the winter of 1998 to the spring of 1999, Zigui County experienced a continuous drought of 5 months, which seriously weakened the citrus tree trend, resulting in many citrus trees in the county could not timely and neatly extract healthy spring shoots, forming a leafless flower. Absolutely more multi-flower trees. According to the survey, such trees account for 10% to 15% of the local tree of the year. In view of this, the author promoted the use of flowering pruning technology around 33hm2, achieving an increase of 560,000 yuan. 1 Trimming method The flowering period is adopted in April and mid-April. Firstly, the small branch group that disturbs the tree shape and affects the ventilation and light transmission of the canopy is firstly removed or retracted, and then the short-cut, retracted and weakened branch group, the weak, elongated and long-term female branches, the dense flowers and some leafless inflorescences are eliminated. , deformed flowers and weak flowers, flowering amount accounts for about 60% of the whole tree, but the whole process of pruning should be less damaged leaves to ensure sufficient leaf area. Since the beginning of May, the pruning tree began to pick up a small amount of early summer shoots. After mid-May, the majority of the tender shoots were preserved to increase the effective leaf area. 2 Effect On November 20th, the pruned tree (15-year-old red orange anvil, Luobosheng navel orange) was investigated. The pruning tree was strong and the number of vegetative shoots was large and strong. The control tree was weak and the branches were weak. The number of nutritional branches is small. On November 25th, the pruning trees and the control trees were harvested, and the difference between pruning trees and control yields was not significant, but the proportion of high-quality fruits was much higher than that of the control. The pruned trees accounted for 41.8% of the fruit above 80mm, and the fruit of 70~80mm accounted for 52.2%; the control trees were 3.6% and 42.6%, respectively. The economic benefits of pruning trees were 30.0% and 76.3% higher than the control, respectively. Calculated by 125 trees per 666.7 m2, the output value reached 3 231.25 yuan, an increase of 1 121.25 yuan over the control. There are two points to be aware of when applying: the earlier the flowering period is trimmed, the more significant the effect; the trimming must be combined with measures such as increasing fertilizer application.
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