In production, leaf picking is an essential technical measure in the management of tomatoes. Reasonable leaf picking can effectively improve the ventilation and light transmission between the plants and promote the color change of tomatoes. In the middle and late stages of tomato growth, the leaves of the base gradually become aging and yellow, and the underlying light is weak. The ability of the lower leaves to produce nutrients is very low, and it is advantageous to properly remove the leaves. When the plants are long, the branches and leaves are dense, and the ventilation and light transmission are affected, the leaves should be picked up in time. However, picking leaves should not be too heavy, too heavy will cause empty fruit.
Excision of the parietal lobe will result in less production of photosynthetic products, insufficient accumulation, and insufficient growth of fruit to form a hollow fruit. And "roots rely on leaf length", the removal of leaves will also aggravate the aging of the root system, resulting in insufficient supply of water and mineral nutrients, and increased the proportion of empty fruit. Therefore, the prevention of tomato fruit hollow must first start from protecting the leaves, and must prevent the leaves from being overweight. So how to prevent it in production?
The first is to pick the top of the top and don't overdo it. If the leaves are overgrown, there are no leaves above the upper ear, which is a big mistake in the management of tomato pruning. Because there are no leaves above the fruit, not only will the hollow fruit be formed, but the fruit will be small and the yield will be low. At the same time, it will be exposed to strong light and the sunburn fruit will appear. Therefore, when picking the heart, one or two leaves should be kept above the upper ear.
Followed by rooting and preventing yellow leaves. Yellow leaves are yellowing of the whole vein from the bottom to the top of the leaves, mostly caused by root dysplasia or root injury. Generally speaking, most of the organic fertilizer is not fully decomposed. It is recommended that the vegetable farmers use the method of using the antibacterial 968 fertility high microbial agent to quickly decompose the chicken manure, and quickly fully decompose the organic fertilizer. If the yellow leaves occur, the cytokinin can be sprayed with amino acid liquid fertilizer to delay the senescence of the leaves, promote the greening of the leaves, and combine the products of rooting with irrigation or irrigation to cultivate the developed roots to ensure sufficient nutrients. Supply, relieve yellow leaves.
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