Detailed Explanation of the Latest Management Techniques for Greenhouse Tomatoes
Greenhouse cultivation is a very common growing method nowadays, and it is also frequently used in tomato cultivation. However, recently many farmers have reported that they do not know how to manage tomatoes grown in greenhouses, nor do they know what issues to pay attention to during the growing process. So today, the editor will introduce to you the management techniques for growing tomatoes in greenhouses.
1. Humidity
Tomato growth has very strict requirements for humidity, and whether during its growing period, flowering period or fruiting period, the impact on it is quite significant. Generally, after tomatoes are transplanted, we should water thoroughly at transplanting, then wait until the second cluster of flowers appears before watering again. At the same time, during the period from the first flowering stage to the third flowering stage, we need to strictly control the amount of watering, and it is best to water again during the period when the fruit is swelling. During the fruit-swelling stage, we should water thoroughly to avoid fruit cracking. The last thing to note is that when the temperature is low, we should reduce the amount of watering, and when the temperature rises, we need to appropriately increase the amount of water.
2. Temperature
After tomatoes are transplanted, we should scientifically regulate the temperature for their growth. Generally, during the period when they enter the fruit-setting stage, the temperature is best kept between 25 and 30 degrees, and the nighttime temperature is best not lower than 15 degrees. Of course, in winter, even with greenhouse cultivation, the temperature is still relatively low, so we should reduce the ventilation time and can cover with plastic film or straw for insulation. After the temperature gradually rises again, we can appropriately increase ventilation to lower the humidity in the greenhouse. Do not wait until the temperature in the greenhouse reaches 30 degrees before ventilating, otherwise the harm to tomatoes is very great. Finally, at this time the temperature difference between day and night should be controlled around the humidity level, which is beneficial for even coloring of tomatoes and improves tomato quality.
3. Density
Reasonable density is also very important for tomato cultivation. During greenhouse cultivation, we should appropriately adjust the tomato plants. In the case of growing tomatoes in greenhouses, we all adjust the density according to the tomato variety. For early-maturing varieties, the planting density is generally about 3,000 plants per mu, that is, with row spacing of 50 cm and plant spacing of 30 cm. For mid-maturing varieties, late-maturing varieties, and mid-to-late-maturing varieties, generally about 3,500 or 2,000 plants can be planted per mu.
4. Pruning
The arrangement of tomato branches and leaves is also a step worth our attention in its management process. First, we set up trellises when the tomato produces its first cluster of fruit, then guide the tomato branches and leaves onto the trellis to climb and grow. During the trellising process, we can appropriately pinch off the growing tips to promote the growth of lateral branches, or keep only the main stem and remove all the other lateral branches. The last thing to note is that during the arrangement of branches and leaves, we tie the stems to the trellis to secure them, providing convenience for subsequent management work.
5. Nutrients
After tomatoes are planted, we should water appropriately, and add an appropriate amount of quick-acting fertilizer to the water for irrigation. Secondly, during the growth of tomato seedlings, we should try not to use nitrogen fertilizer, so as to avoid excessive vegetative growth of branches and leaves. After tomatoes flower and set fruit, we can appropriately spray foliar fertilizer and apply potassium fertilizer as a top dressing to promote fruit swelling. After the fruit is harvested, we need to apply a heavy top dressing once to prepare for the next high yield, and at the same time it can also prevent plant aging, which would lead to reduced yield.
In the process of growing tomatoes in greenhouses, we also need to pay attention to the regulation of light, so that light reasonably enters the greenhouse, promotes nutrient absorption, and thereby increases tomato yield. That is all for today's content that the editor wants to share with you. Thank you for your long-term support and encouragement.