Guide:
For tomato cultivation, there are cases of falling flowers and fruits. It will inevitably have an impact on our yield, and the economic loss as a grower will be relatively large. Especially in the case of growing tomatoes in greenhouses, the loss of large flowers and fruits is relatively large. If you want to solve this problem, you have to come up with the cause. This matter cannot be completely resolved without a fundamental solution.
In the case of tomato planting, the most common occurrence of flower and fruit drop is in the first and second inflorescences. In the case of falling flowers and fruits, it is generally about 15-20%, which does not have a great impact on the yield. If it reaches more than 30%, or even 50%, the yield will have an impact.
As far as the fall of flowers and fruits is concerned, there are two different stages. In addition to the occurrence of various pests and diseases caused by the occurrence of flower and fruit drop, generally speaking, the phenomenon of fruit drop will be less, and the situation of flower drop is relatively more. There are still many factors that cause this. At this point, anyone who has ever grown tomatoes in a greenhouse should be more clear. And sometimes, it's hard to judge the cause of this.
What are the general causes of falling flowers and fruits?
Tomatoes fall flowers and fruits, and the most common reasons are low temperature and high temperature. Such a growing environment is particularly sensitive to the flowering period, and it is also the main factor causing flower and fruit drop. In addition, there are too many planting densities, pruning and pruning are not very timely, etc., these factors are the main factors that cause flower and fruit drop. However, there is another factor caused by pollination, and poor pollination will also lead to flower and fruit drops.
A solution to the problem of falling flowers and fruits
First, the temperature is high or low for tomatoes grown in greenhouses. In the case of high temperature, it is necessary to carry out ventilation and cooling to solve the problem. Generally, greenhouses will have vents, and it can be basically solved by following the principle of ventilation and cooling. In addition, it is low temperature, because greenhouse planting itself is carried out in winter, and low temperature is very normal. This requires the greenhouse to be equipped with heating equipment, which can be heated in time in extreme weather.
Second, the planting density and improper management, for the planting density of tomatoes, different varieties are also required, which should be understood. Under normal circumstances, the planting density of one acre of tomatoes is 2800-3200 plants, which is an ordinary variety. In addition, improper management, pruning and pruning, this technical work has a lot to do with experience.
Third, the problem of pollination, the planting and pollination of tomatoes in winter greenhouses are basically artificial pollination or bumblebee pollination. The tomato itself belongs to self-pollination, the principle: after the anther matures, it splits inward, scatters pollen, and completes pollination when it falls on the stigma. Due to the temperature in the greenhouse, the pollen of tomatoes will lose their vitality or cannot be emitted from the anthers. That is, it leads to pollination failure, and the reason is easy to understand.
Abnormal temperature: low temperatures, such as below 20-22 degrees during the day and 10-12 degrees at night. High temperatures, e.g. temperatures above 32 degrees during the day and 22 degrees at night. Pollination abnormalities are a normal thing, and these data are referenced.
Summary: In the case of falling flowers and fruits of tomatoes, these factors are basically the same. Doing a good job of these factors can basically reduce the situation of falling flowers and fruits. In fact, the situation of falling flowers and fruits is mainly within a reasonable range, and basically does not affect the yield. If there is a situation of falling flowers and fruits, there is no need to be too anxious.