Before and after the flowering of the grapes is the transition period between the stored nutrients and photosynthetic nutrients of the grapes. If the nutrient growth is not controlled in time, it will inevitably cause a large number of flowers and fruits and reduce production. Therefore, effective summer pruning of grapes in time is an effective measure to regulate the contradiction of vegetative growth and reproductive growth and promote fruit setting and reduce fruit drop.
1. Topping
1. The topping seedlings planted in the same year as early as the topping seedlings can promote root growth and rapid thickening, to achieve the results of the year of stripping and two years. The specific method is that when the seedlings are planted in June, the height of the seedlings can reach about 1 meter in June. At this time, the new tips are removed and the 30-40 cm auxiliary tips are removed from the base, and 1 to 3 pieces are left on the upper side of the auxiliary tips. Ye repeatedly topping control. If the apex is extended, the secondary tip can be left 50 to 80 cm if it is strong and then topped. If the growth is weak, then 1 to 3 leaves can be used for repeated topping control.
2. The topping time before flowering of the fruiting tree and the processing of new shoots from the secondary shoots are generally from before flowering to after fruit setting. The purpose of topping is to supply nutrients to the flower organs during the flowering period, temporarily reduce or interrupt the growth of new shoots, which is beneficial to the results. The topping of new shoots is generally strong. The new shoots retain 6-9 leaves on the top tidbits, the mean shoots retain 4-5 leaves, and the weaker shoots retain 2~3 leaves on the inflorescence.
Second, the branch vine peeling
The ring peeling of grapes should be carried out at the beginning of the flowering period. The specific method is to use a ring peeling knife or a bud joint knife to carry out the ring peeling at a distance of 3 cm in front of the fruit branch or the previous internode. The xylem is immediately wrapped with plastic strips to facilitate healing. This approach can significantly improve the fruit setting rate, especially for Jufeng varieties, the effect is more significant.
3. Plant growth regulators control growth
PBO is a new type of multi-functional high-tech fruit tree product. It can reduce flower drop and fruit drop, increase fruit setting rate, increase single fruit weight and improve quality. After using PBO twice on new shoots, vice shoots and tendrils, the growth is inhibited, which can reduce topping, save labor and reduce the consumption of invalid nutrients. It is a good choice in grape production.
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Drug Intermediates -Pharmaceutical intermediates: A material that is produced during a process step of the drug substance and must undergo further molecular changes or refining before it becomes a drug substance. The intermediates can be separated or not separated.
Active Pharmaceutical Ingredient (APIS)(or Drug Substance) : Active Pharmaceutical Ingredient (API)(or Drug Substance) : Any substance or mixture of substances intended to be used in the manufacture of pharmaceutical products and, when used in pharmaceutical products, to be an active ingredient in pharmaceutical products. Such substances have pharmacological activity or other direct effects in the diagnosis, treatment, symptom relief, management or prevention of disease, or can affect the function and structure of the body. As can be seen from the definition, the Intermediates APIS is a key product of the previous process of manufacturing the API and has a different structure from the API
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