Usually, the winter stubble in solar greenhouse is cultivated in winter and spring stubble with common single stem pruning, and the density of early-maturing varieties can be higher, leaving one Guo Hui for each plant. The density of medium-mature varieties is about 2500 plants/mu, with about 5 ears per plant. In the branches of tomatoes, there will be some new buds, which are called root sucking and need pruning. If it is not controlled, root suction will rob the plant of nutrients, resulting in low fruit setting rate of tomatoes.

Pruning tomato with one branch and two stems in greenhouse: when the tomato plant grows to 70~80 cm, the first ear opens, and the first lateral branch is left under the first ear as the second main stem. Clear all the side branches below. After that, the two main poles grow at the same time, and as a result. The best pruning time of tomato is generally when the lateral branches at the lower part of the first inflorescence of seedlings grow to about 6-8 cm. After the first pruning, when the lateral branches grow to about 1-2 cm, they can be pruned again.

Double stem pruning is actually an improvement on the basis of single stem pruning. In addition to leaving a main branch and a lateral branch as the second trunk, it is called double trunk pruning. The specific method is to cut off all the side branches around the two main branches. Tomatoes like to light crops, so it is necessary to spread a layer of reflective film on the soil of the plant and cut off all the branches and leaves at the bottom of the plant to ensure that the fruit has enough light. Attention should be paid to the prevention and control of pests and diseases, and the soil should be disinfected and continuous cropping should not be allowed. When transplanting, pour some disinfectant before transplanting.

Infinite growth forms are often pruned with one stem or two stems. Single stem pruning, leaving only the trunk and removing all the side branches. Double trunk pruning, in addition to leaving the trunk, should also keep a side branch under the first flower system, remove the rest of the side branches. One and a half branches are the combination of the first two methods. On the basis of two poles, the side branches are not allowed to grow indefinitely. After one ear is hung on the side branch, leave two leaves to pick the core. This method is suitable for a wide variety, and the yield is higher than that of a single branch. Single stem pruning is usually used in rural areas, because the main stem of tomato plants growing with single stem will be stronger. When tomatoes are in full bloom, you can simply insert a stake. There is no need to plant scaffold suspenders separately.