Key points of greenhouse Tomato Management in Autumn and Winter

Tomato has a unique taste and is rich in high nutrients. It has been planted in all parts of our country. Now we can eat tomatoes all the year round because of the development of greenhouse technology. Let's take a look at the key technical points of tomato management in greenhouse in autumn and winter.

1. The number of ears is determined according to the density and the size is determined according to the number of ears. No matter the early-maturing variety or the late-maturing variety, the single fruit can reach more than 100 grams, and some can reach more than 500 grams, so no matter which variety, only 6 ears can be left, not too many, and each ear should have 3 Mueller and 4 fruits. Only in this way will it help to promote the growth of fruit. In the aspect of pruning, the method of single-stem pruning and plastic rope hanging is generally adopted.

2. Pay attention to the squatting seedlings planted. After planting to the first inflorescence to bear fruit, mainly squatting seedlings, promoting the root system to tie down, promoting lower control to lay a good foundation for high yield. If the soil water content is more than 20%, do not water, such as due to soil weather and other conditions caused by the special drought, need to use diammonium phosphate or compound fertilizer with appropriate amount of hydration, floating watering each plant 1 Mui 1.5 jin.

3. Where the ridge is planted, it is not ploughed on the ridge, but attention should be paid to timely loosening the soil to prevent consolidation. For the deep ploughing of Pusaji fertilizer without ridging, it can be ploughed many times, with a depth of 10 Murray 15 cm. It can increase soil temperature and soil permeability. However, we should pay attention to the deep ploughing without harming the roots.

4. Master the temperature and pour the first water in time. When the first fruit walnut is big, the second fruit broad bean is big, and the third fruit bud is just blooming, it ends squatting and begins to irrigate, once every 10 murals every 15 days, combined with topdressing urea, 15 Mu and 20 jin per mu. And pay attention to the frequent application of carbon dioxide. If you encounter the phenomenon of flourishing and growing, you can spray dwarf or zhuangsu properly. The ground temperature should be kept above 20 ℃ before and after watering, and attention should be paid to the amount of ventilation should not be too large, so as not to affect the root growth.

5. Prevent fruit drop and malformed fruit

There are many factors that cause flowers and fruits to fall. The main reasons are: too high or too low temperature, lack of light, lack of moisture and malnutrition caused by root injury. If it is caused by temperature, plant growth regulators can be used, usually using 2mae4Mel D-spot flower stalks with a concentration of 10--20PPM. The flowers blooming on the same day are the best, from 9 am to 3 pm. In addition, you can also use 25% anti-falling element 1 ml, spray with one jin of water. If it is caused by other conditions, then pay attention to improving light, regulating soil moisture, topdressing outside the root, increasing carbon dioxide and other factors. It is better to use a brush to point the flower handle, do not be too heavy and too many times, and pay attention to the appropriate concentration in order to prevent deformed fruit.

6. do a good job of fruit harvest and storage

The main purpose of tomato cultivation in autumn and winter is to obtain greater economic benefits through out-of-season sales, so harvest can be delayed as far as possible, so it can be sold at a better price, generally do not use ethephon to accelerate ripening, harvest 3 months after sowing, and complete fruit harvest at one time before the Spring Festival. for fruits that are still green when harvested, they can be stored in a greenhouse in baskets and listed one after another after maturity.