The reason for the small size of sugar orange fruit
1. Insufficient nutrients
Insufficient trenching and fertilization in spring, insufficient topdressing amount, and long intervals between topdressing can all lead to a lack of nutrition in sugar oranges and the phenomenon of small fruit size.
If only urea is applied during topdressing, and urea is nitrogen fertilizer. If only nitrogen fertilizer is applied, it can only enhance the tree vigor of sugar oranges without growing fruits.
If there are too many branches and leaves in a fruit tree, it will snatch the growth and nutrition of the fruit, leading to phenomena such as fruit drop and small fruit size.
2. Excessive fruiting
Many fruit farmers increase their efforts to protect flowers and fruits in order to increase production, constantly spraying fruit preservatives, resulting in excessive fruit growth on fruit trees.
If there are too many fruits, it will lead to insufficient space for fruit growth, and the nutrition will not keep up with the fruit quantity. The fruit will also be too small due to insufficient nutrition.
Prevention and control of small sugar orange fruit
1. Scientific fertilization
Allow each fruit to absorb comprehensive and sufficient nutrients.
Although nitrogen fertilizer can enhance tree vigor and promote shoot growth, it is necessary to pay attention to the application time of nitrogen fertilizer. When protecting flowers and fruits, the amount of nitrogen fertilizer application should be reduced, and when releasing shoots, the amount of nitrogen fertilizer can be appropriately increased.
When the sugar orange fruit enters the color changing period, it is necessary to increase the application of compound fertilizer and phosphorus potassium fertilizer appropriately to promote fruit enlargement and color changing.
2. Timely thinning flowers and fruits
If there are too many fruits, they should be thinned in a timely manner.
Especially after the stable fruit period, artificial thinning should be carried out.
In general, the number of fruits on a branch should not exceed 10, preferably around 5-6
