What are spring shoots, summer shoots, autumn shoots and winter shoots?

1. Photo: New branches of plants grow in spring. Generally speaking, the new shoots of fruit trees can't bear fruit, which will waste a lot of nutrition, so the new shoots should be pruned during the fruit-bearing period.

2. Spring shoots: New shoots sprouting from February to April are called spring shoots. In the germination stage of spring bamboo shoots, due to the low temperature, long growth time, short internodes, fuller branches and smaller leaves. Fruit trees often do not shoot in spring in years with many flowers, because the terminal buds form spikes.

3. Summer buds: New buds that germinate from May to July are called summer buds. Summer buds usually germinate from fallen flowers and branches or mature spring buds. Results The amount of summer shoots of trees depends on the number of fruits, and plants with many fruits hardly germinate summer shoots.

4. Autumn buds: New buds born in August -65438+ 10 are called autumn buds. Autumn shoots are good fruiting mother branches. Autumn bamboo shoots are usually smoked only once. If the trees are strong and there is a lot of rain, you can smoke the second autumn shoot on the first autumn shoot.

5. Winter bamboo shoots: The new shoots born in June11are called winter bamboo shoots. Generally, trees are healthy and vigorous, and when it is warm and rainy in winter, it is easy to sprout winter buds. Winter buds are tender and vulnerable to freezing injury because of their late emergence and short growth time. ?

Extended data:

Because the growth of winter shoots consumes the organic nutrients accumulated in trees, which is not conducive to the flowering and fruiting of fruits. Germinating agents such as ethyl acetate are often used in production to kill young buds, which is called "killing winter buds". This practice requires strict technology. If it is not well controlled, it will lead to excessive shoot control or kill old leaves, which will affect flowering and fruiting.

Later, scientific and technological personnel successfully developed the organic nutrient "Yuhualing" series, and summed up a new theory of controlling winter shoots: controlling the elongation of winter shoots, promoting winter buds to become flower buds, achieving the goal of not killing winter shoots, and further promoting the development of technology.