Due to the high indoor temperature, small temperature difference between day and night, large amount of nitrogen fertilizer application, high humidity, or inability to timely transplant seedlings, tomato seedlings tend to form slender, thin and thin leggy seedlings. The following measures should be taken during cultivation to promote growth.
To adjust the temperature of the tomatoes after long-term seedling planting, the incubation of the greenhouse should be done well before easing the seedlings. The daytime temperature should be controlled between 28°C and 30°C (excess temperature should exceed 30°C), and the night temperature should be controlled between 15°C and 18°C ​​to promote seedling. Ventilation should be strengthened after easing the seedlings, and the indoor temperature should be appropriately reduced. The temperature should be controlled to 22°C to 25°C during the day, 15°C to 16°C at night, and 10°C to 12°C at the lowest, and the seedlings should be controlled properly at a relatively low temperature.
The legal planting of the transplanted plant will transplant some of the stems of the tomato seedlings into the soil, which will not only reduce the transpiration of the foliage, but also help to inhibit the plant's apical dominance, promote the growth of the underground, and also make the stem length buried in the soil. Many adventitious roots enhance the ability of plants to absorb and utilize soil nutrients, which is conducive to the survival of seedlings and the formation of strong seedlings. When planting and planting, it is best to make the stem obliquely to the north, and then gradually straighten, so that the height of the seedlings is the same to avoid the uneven phenomenon. The depth of lying planting is generally about 10 centimeters, not too deep, so as to avoid the poor permeability of underground roots, causing the occurrence of root diseases, root rot, and other physiological diseases. At the same time, the stalk leaves buried in the soil should be removed to avoid the soil. The rot causes disease.
The seedlings are treated with tomatoes and transplanted to the first flower during the fruiting period. If it is not particularly arid, watering or watering is not required to promote root development and adjust the balance between vegetative growth and reproductive growth, which is conducive to flowering. The production of the first inflorescence fruit walnut, the second inflorescence fruit broad beans, the third inflorescence just finished flowering seedlings.
To loosen the slings properly in order to prevent the tomatoes from lodging, it is necessary to hang the vines after pressing the vines. What needs special emphasis is that the plants must not be hung too tightly so that the apical dominance of the plants will be enhanced, resulting in serious plant growth. You can loosen the sling of the tomato and let the stem base of the plant lean, that is, let the plant grow long, so as to inhibit the growth of the plant.
Delaying fruit thinning time is usually after fruit set, when the fruit grows to the peanut size, the fruit is thinned, but when the tomato grows up, the vegetable grower can postpone the fruit peeling time and wait until the tomato grows to the size of the walnut. As a result, plant growth is inhibited by increasing fruit nutrient consumption.
Reasonable control of water and fertilizer Tomato seedlings grow seedlings to the results before the period of time to do a strong root soil treatment, generally do not apply fertilizer, because the basic nutrition provided by the basic fertilizer to meet the needs of the early growth of tomatoes. Do not apply nitrogen fertilizer after the seedlings are grown until fruit set, so as to prevent them from growing. At the same time, it is necessary to appropriately reduce the amount of watering and the number of times, and it is forbidden to flood irrigation.
Appropriate chemical regulation of tomatoes appears to be long, many vegetable farmers will choose hormone control prosperous, it is worth noting that, when using chemical hormones, we must control the concentration of agents to avoid excessive control. Moreover, from the point of view of improving the cultivation and management measures, it is necessary to comprehensively suppress tomato growth and try not to use growth inhibitors such as dwarf and paclobutrazol, because not everyone can use it properly, especially after flowering. Taking paclobutrazol as an example, once it is applied in excess or multiple times, its effect is hardly to disappear, resulting in low plant height, pod growth, and dense ear, but the fruit size is small, and the yield is greatly reduced. However, when paclobutrazol is harmed, there is no “antidote†and it can only be solved by changing the soil. There are also some cultivars who use chlormequat and paclobutrazol indiscriminately, causing the colonized seedlings to no longer grow. Http://Content/1b2acad9-bac6-465e-b6eb-345afa85bfe0?cType=2
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