According to the natural growth law of plants, seeds generally germinate in spring and then are planted and cultivated. But with the rapid development of modern science and technology, people have the ability to manipulate nature. When planting and cultivating Toona sinensis seedlings, seeds usually germinate in spring. Some people germinate in the greenhouse in winter in order to make Toona sinensis seedlings qualitative before the arrival of high temperature in summer.
The planting in September mentioned in the question is actually autumn, which is actually very similar to the planting after the seeds germinate in spring, except that the growth dilemma is low temperature in winter. However, when the low temperature comes in winter, Toona sinensis seedlings can no longer resist the cold.
Safe overwintering is the key to the success of Toona sinensis seedling raising.
1. A small number of Toona sinensis seedlings
If the planted Toona sinensis seedlings are small and mobile, it is recommended to move indoors to avoid low temperature freezing injury; If the planted Toona sinensis seedlings are few and immobile, a simple shed can be built for them to prevent wind and frost.
2. A large number of Toona sinensis seedlings
If a large number of Toona sinensis seedlings are planted in autumn, the best way is to build a small greenhouse to make it safely overwinter.
Judging from the above measures, the cost of sowing Toona sinensis seedlings in autumn is much higher than that in spring, because it violates the laws of nature.
However, judging from the success rate of Toona sinensis seedling, the best sowing date is winter, which is about 65438+February and 65438+ 10 in the second year. The research shows that sowing and seedling raising of Toona sinensis in winter can not only improve the quality and survival rate of Toona sinensis seedlings, but also advance the seedling raising time of Toona sinensis seedlings. However, when sowing and raising seedlings in winter, we should also pay attention to the wintering and cold protection work. Before the frost season comes, you can water the seedlings once, and protect the seedlings from freezing injury with plastic film to avoid the seedlings from death due to freezing. When the weather gets warmer, remove the plastic film in time. Similarly, the cost of sowing Toona sinensis in winter is higher than that in spring.
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