LED plant fill light has been widely used in indoor plants, factory plant planting, and greenhouse crop production. For plant fill light, it can achieve early harvesting, prolong the harvest period, improve the quality of agricultural products, and increase output. Crops get greater output and economic benefits. There are two major factors that need to be overcome in the cultivation of greenhouse vegetables in winter: temperature and light. In terms of temperature, the heat preservation of the greenhouse itself is very good. In extreme weather conditions, additional heating facilities can basically ensure the temperature of vegetable growth. Insufficient light will limit the growth of vegetables. However, for supplementary light, it is necessary to choose the appropriate light to meet the requirements of crop growth. Otherwise, even if there is a fill light, it will not achieve the best fill light effect.
For tomatoes in greenhouses in winter, what are the reasons for the slow color change, uneven coloring, coloring quality or even non-coloring of tomatoes? In the process of winter tomato planting and management, what measures should we take to promote faster, better and more uniform coloration of tomatoes in the short term? For tomato fruits that have not been picked or that have been picked but the quality of the color change is not good, how can we carry out pollution-free red promotion?
Tomatoes are a type of crop that likes temperature and light. Although the requirements for the amount of light are not very strict, the amount and length of light directly affect the growth of seedlings, the level of fruit yield and the quality of taste. Insufficient light and poor light will lead to yellowing and thinning of tomato leaves, and poor photosynthesis for producing nutrients, resulting in poor plant growth or vigorous growth, premature leaf senescence, flower and fruit drop, inhibited fruit enlargement, and frequent diseases and insect pests. However, if the light time is too long or it is directly exposed to high temperature and strong light for a long time, it is not only easy to cause the problem of dehydration and wilting of tomatoes, but also the problem of burning leaves or fruits by high temperature and strong light.
Therefore, in order to have good growth, large yield and good quality of tomatoes, sufficient light should be ensured during the growing period. It is recommended to maintain light conditions of about 14-16 hours a day. In particular, it should be noted that under the condition of reasonable temperature, sufficient light can greatly enhance the ability of tomato leaves to produce nutrients, which can well promote plant growth and flower and fruit development. When encountering continuous low temperature and rainy weather during the growth period , It is recommended to increase the amount of light by extending the lighting time and using the supplementary light supplementary light method, so as to ensure the robust growth of tomatoes and high-quality large fruits. For fruit vegetables and fruits such as dragon fruit, strawberry, grape, and tomato, red and blue light is suitable for fill light, which has better effect on stem and leaf growth and flowering.
