The production of high-quality fruit should first achieve the safety of the product, that is, the fruit produced must meet the health standards of the corresponding safety level (eg pollution-free, green food, organic food); secondly, it must be judged from the sensory point of view Normal morphological characteristics of the variety (if shape, peel coloring, seed size, quality flavor, etc.); finally graded according to fruit size as superior fruit, first-fruit and second-fruit, etc. (Specific fruit quality classification standards vary by species ). Therefore, the core of production of high-quality fruit lies in the regulation of fruit size.
Litchi how to increase fruit
In addition, for the lychee varieties in which the embryos such as Guiwei and Lanzhu are partially aborted, the level of the coke nucleus rate is also an important measure of their high-quality fruit rate.
Quality litchi production can not be separated from conventional soil and fertilizer water and canopy management and other technical measures. On the basis of strengthening conventional management, improving fruit quality should pay attention to the following aspects:
1. Increase organic fertilizers to avoid excessive use of chemical fertilizers.
In the case of 50 kg of trees for fruit production, 0.5 kg of calcium phosphate, 1 kg of potassium sulfate, and 10 to 15 kg of fully-fertilized organic fertilizer are applied to each plant, which are applied after the deflowering and then 35 days after the deferred flowering. 50 days each applied a manure water fertilizer.
2. Right amount of irrigation.
In southern climate conditions, litchi water shortage mostly occurs in the early stage of fruit development. The early drought directly affects the growth and development of the pericarp. After the obstruction of pericarp development, it will indirectly affect the fruit growth and even increase the cracking fruit in the later period. Therefore, the weather during the pericarp development period suffers from high temperature and drought. , should pay attention to spray and irrigation.
3. Reasonably trim.
Litchi fruit quality is closely related to light conditions. Maintaining an airy and transparent canopy through reasonable pruning is one of the conditions for high quality fruit formation.
4. Integrated pest management.
According to the principle of pest control in litchi production of green food or litchi production of pollution-free foods, low-toxicity and high-efficiency pesticides or biological or mineral-sourced pesticides should be selected, combined with physical and biological control methods to prevent and control pests and diseases, so that products can be both No pests and diseases were infected, and the pesticide residues in the fruits did not exceed the prescribed hygiene standards.
5. Promote the normal development of early flowers often obtain large fruit.
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