How can seedlings continue to bloom at low temperature?

Low-temperature seedling cultivation is a method that farmers often use to cultivate strong seedlings in vegetable production. However, when reporters went to the countryside recently, they discovered that seedlings have begun to bloom, and some vegetable farmers are still lowering the temperature of their greenhouses to carry out low-temperature hardening. The reporter believes that this is not a good practice. Why do you say so? Because the temperature of vegetables during flowering is very strict, if the flowering temperature is too low, it is very easy to cause poor fertilization, fruit setting rate is low, more deformed fruit. Therefore, the reporter here reminded the vegetable farmers that they must pay attention to the time when taking low-temperature refining.

Then, when is the seedling most suitable for low-temperature exercise? The author believes that it can be divided into two periods:

One is 5-7 days before planting. At this point, the temperature of the seedbed can be reduced by 3 to 5°C than usual, and the seedlings can be cultivated at low temperature. This will increase the resilience of seedlings and increase the survival rate after colonization. And we must pay attention to avoid planting seedlings into large seedlings before planting, because the large seedlings slow seedlings after planting, is not conducive to the rapid formation of strong seedlings. Generally, melon vegetables are planted with three-leaf and one leaf is planted. Solanaceous vegetables are suitable for planting with five leaves and one heart. If once can not be planted in time due to various reasons, leading to seedlings are blooming before planting, do not re-low temperature seedlings, to prevent the seedlings caused by the low rate of fruit set.

The second is after a week of planting. After the planting of vegetable seedlings, the seedlings can generally pass through the seedlings after one week. At this time, the small arch sheds can be removed, and the temperature in the sheds can be gradually lowered to perform seedlings at a low temperature. Melon vegetables can reduce the temperature to 24-30°C during the day and 13-14°C during the night. Solanaceous vegetables can be reduced in temperature to 22-28°C during the day and 12-13°C in the evening to promote the formation of strong seedlings as soon as possible. Do not wait until the vegetables are planted half a month later or even later to start the low-temperature seedlings, because most of the seedlings have already blossomed at this time, too low temperatures often cause poor insemination and low fruit setting rate during flowering.

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