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Removal of the parietal lobe will cause less production of photosynthetic products and insufficient accumulation of fruit. The fruit will not develop enough nutrition to form empty fruit. And "rooted on leaf length," the removal of the leaves will increase the aging of the root system, resulting in inadequate supply of water and mineral nutrients, but also increased the proportion of empty fruit. Therefore, the prevention of empty holes in tomato fruits must begin with the protection of the leaves, and it must be prevented that the leaves are too heavy. How to prevent it in production?
The first is that the top should not be overdone. If the leaves are picked up, there is no blade above the top of the ear, which is a big mistake in the management of the pruning of tomatoes. Because there are no leaves above the fruit will not only form empty fruit, but also small fruit, low yield, but also vulnerable to direct sunlight and sunburn. Therefore, when topping, one or two leaves should be retained above the top of the ear.
Followed by raising yellow leaves. Yellow leaves are the yellowing of the veins from bottom to top of the whole plant, mostly caused by poor root development or root injury. In general, most organic fertilizers are not fully decomposed. It is recommended that vegetable farmers use the method of rapidly decomposing chicken manure with bacteriostatic high-microbial microbial agents to rapidly decompose the organic fertilizer. If yellow leaf occurs, foliar spray cytokinin can be added to amino acid liquid fertilizer to delay leaf senescence and promote leaf turning green. In combination with flushing or irrigation to promote rooting products, cultivate advanced roots and ensure adequate nutrient supply. Supply, ease yellow leaves.
In production, picking leaves is a necessary technical measure in the management of tomatoes. Reasonable picking leaves can effectively improve the ventilation and light transmission between rows and promote the transformation of tomatoes. In the middle and late stages of tomato growth, the base leaves gradually become senescent and yellow, and the underlying light is weak. The ability of the lower leaves to produce nutrients is low, and it is advantageous to properly remove the leaves. Plants are long, dense foliage, affecting the ventilation and light, it should be timely picking leaves. However, picking leaves should not be too heavy. Excessive weight can cause empty fruit.