What are the causes of chrysanthemum malformations? What are the various reproductive methods of chrysanthemum?

What are the reasons for the deformity of chrysanthemums?

When the ① chrysanthemum bud appears, the lateral bud should be removed in time, the top bud should be left two first, and only one correct bud should be left when it grows bigger than the bean grain. Never touch or pinch the bud left with your finger. The bud that has been injured or pinched with your finger can not produce round flowers.

Buds selected by ② should be prevented from being eaten by ants and other pests, such as aphids and corn borer. Regular medication can avoid the harm of pests.

Avoid rain when ③ blossoms, and don't water the flowers when watering, so as to avoid bad heart.

Willow leaf head, also known as willow bud head, is an abnormal phenomenon in chrysanthemum cultivation. Chrysanthemum in spring and summer, if it is allowed to grow naturally, regardless of physiological intercourse, when the leaves grow to about 30, the natural light and temperature do not meet the bud conditions, often appear at the top of the willow leaf, that is, willow leaf head. Once the willow leaf head occurs, the stem and leaves age naturally, the top leaves are dense, the leaf shape becomes abnormal, narrow and thin, sharp and curved, the growth is slow, no flower storage or flower bud elongation, the flower head is not plump and shaped. The reasons for the occurrence of willow leaf head are, first, improper selection of foot buds; second, external environmental conditions can not meet the needs of chrysanthemum's own growth and development, and do not reach the conditions of low night, mild and short days.

The measures that should be taken to prevent willow leaf heads are as follows:

When selecting foot buds, ① should be careful not to select the stem tomb of the mother plant and the foot buds unearthed from the shallow layer of basin soil, and not to select the foot buds with full head, dense internodes, fat leaves and retracted feet resembling chicken feather duster and conical buds at internodes.

When the new plant of ② grows to 10 cm high in June, it should top and pick the heart from the base 3 to 4 leaves, leaving only one new bud at the top as the main branch to grow upward, and the branches between the axils of the lower leaves will be wiped out in time, that is, the phenomenon of willow head will not occur.

③ has "willow leaf head" chrysanthemum, after artificial renewal of branches and coring in time. According to the physiological characteristics of chrysanthemum, timely maintenance will still produce beautiful flowers in autumn.