Brother Li found us and said that his own tomato greenhouse, the tomato looks very normal, the size is large, the color is good, but it is a lot of edges, after cutting, the is also relatively small, the whole large tomato, the portion is very light, and it can not be sold.
According to his description and our field observations, this is actually a tomato hollow fruit. The main performance is that the flesh is not full, the appearance is angular, the fruit is relatively light, the quality is poor, and it is also a kind of deformed fruit. The production of hollow fruit is closely related to the weather and improper management, but everyone may also find that in the late winter and early spring, it occurs more often and is more serious, why is this?
The reason is mainly because, in the deep winter, early spring season, insufficient light, affecting photosynthesis, insufficient internal nutrients of the fruit, easy to produce hollow fruit. Early spring stubble is generally colonized around New Year's Day, then, flower bud differentiation and flowering fruit set are in the cold winter, low temperature affects pollen fertilization, fruit development, pulp splitting and fruit growth rate is not synchronized, there will be hollow fruit. In addition, in the deep winter, due to the low ground temperature, the root activity is relatively poor, which affects the absorption capacity of fertilizer water during the flowering and fruit setting period, and insufficient nutrients are also easy to lead to hollow fruits.
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In order to reduce the production of hollow fruit, we must strengthen the management of the following aspects in daily management to ensure the growth of plants.
Enhance temperature management. From colonization to the first inflorescence flowering, management should be based on vegetative growth, especially to pay attention to the appropriate temperature, under the right temperature, you can avoid growth, make nutrition more balanced, cultivate strong trees, and more importantly, let the flower bud differentiation be carried out normally. Generally, the temperature is maintained at 23-28 ° C during the day, and it can be controlled at 13-16 ° C at night.
Strengthen root system conservation. In winter, the root system of the plant is weak, which is related to the low water temperature or too much watering during the watering of the shed, the root system of the tomato is injured, and the absorption capacity of the fertilizer water after the root system is injured, resulting in malnutrition and hollow fruit. When watering in winter, try to choose a sunny morning, the ground temperature is maintained at about 15 ° C, and the difference between water temperature and ground temperature is relatively small. Combined with watering, functional fertilizers for the maintenance of roots, such as chitin, alginic acid, etc., keep the roots strong, promote water and fertilizer absorption, and ensure that the plants are strong.
Strengthen fertilizer and water management. When it comes to the flowering and fruit setting period, the amount of nitrogen fertilizer is appropriately controlled and the amount of potassium fertilizer is increased. At the same time, according to the growth of the plant, grasp the use of balanced fertilizer and high potassium fertilizer, generally alternately. At the same time, foliar supplements such as boron and calcium fertilizers are also needed to improve fruit set rate.
Leave fruit reasonably. Fruits that have been seated but are stunted, do not stay, remove them in time, reduce nutrient consumption, ensure the supply of nutrients to normal fruits, and promote rapid fruit expansion. At the same time, reasonable leaf picking, especially in the late growth stage, retain 1-2 leaves under the fruit spike, do not over-pick the leaves, and avoid aggravating the occurrence of hollow fruit.