What causes cucumber fruit abortion in greenhouse cucumbers?
Cucumbers are currently grown on a relatively large area in our country, and nowadays cucumbers are generally grown mainly in greenhouses. When growing greenhouse cucumbers, if management is improper, the phenomenon of cucumber fruit abortion often occurs. Cucumber fruit abortion has a great impact on both yield and benefits. So what is going on with cucumber fruit abortion in greenhouses? Today the editor will give you a brief introduction, let us take a look below!
1. Fruit abortion caused by high temperature
When growing greenhouse cucumbers, if the daytime temperature inside the greenhouse is higher than 30°C and the nighttime temperature is higher than 16°C, then it is very unfavorable to the growth of cucumbers. It will increase the respiration of cucumbers, thereby hindering photosynthesis. This leads to insufficient nutrients in the cucumber plants and causes fruit abortion, and the female flowers cannot develop normally, making it easy to form deformed fruits. Then, at the early stage of cucumber fruiting, the growth rate of stems and leaves is relatively fast. The fruit development is relatively slow, and if there are several consecutive days of high temperature, then nutrients will be transported to the stems and leaves, causing excessive vegetative growth of the vines, which in turn triggers a large amount of fruit abortion.
2. Improper water and fertilizer
When cucumbers carry out photosynthesis, they definitely cannot do without water and fertilizer. Because photosynthesis needs to absorb water and fertilizer through the cucumber root system as raw materials, and it also takes water as the main medium. So if there is not enough water and fertilizer, then the photosynthetic substances of cucumbers will be reduced, causing insufficient nutrients in cucumbers and resulting in fruit abortion. On the contrary, if there is high temperature and high humidity at night and an excess of fertilizers such as nitrogen, then it is easy to cause excessive vegetative growth of cucumbers. This is also a main cause of cucumber fruit abortion, so everyone must pay attention to doing a good job in fertilizer and water management.
3. Gas factors
The gases inside the greenhouse are also very important to the growth of cucumbers. Cucumbers are also very sensitive to changes in gases. If there is too much harmful gas such as carbon monoxide and sulfur dioxide in the greenhouse, then the growth of cucumbers will be inhibited. This causes cucumber fruit abortion and seriously affects yield. So we should pay attention to doing a good job in ventilation and air exchange, improve the air quality inside the greenhouse, and remove harmful gases. At the same time, we can also supplement an appropriate amount of carbon dioxide into the greenhouse, which can effectively reduce fruit abortion and thereby improve cucumber yield and quality.
4. Fruit abortion caused by delayed harvesting
After greenhouse cucumbers bloom, it usually takes about a week until harvest. This time is also the best harvest period for cucumbers. If the bottom fruits of the cucumber plants are not harvested in time after they mature, then they will absorb a large amount of assimilated substances. This leads to insufficient nutrients for the female flowers in the upper part of the cucumber plants, resulting in fruit abortion. So we should promptly remove mature fruits, especially the bottom fruits, to avoid too many bottom fruits affecting the growth of the upper fruits and reduce the phenomenon of fruit abortion. At the same time, timely supplementing nutrients is also a key measure to reduce fruit abortion.
The above is a brief introduction to what is going on with cucumber fruit abortion in greenhouses. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!