Seed propagation methods of Forsythia suspensa

Forsythia likes light, has a certain degree of shade tolerance, likes warm, humid climate, is also very cold-resistant, resistant to drought and barren, afraid of waterlogging, and does not choose soil. It can grow normally in neutral, slightly acidic or alkaline soil. There are seed, cutting, striping, plant division and other methods. Let's take a look at Forsythia seed propagation methods.

Seed Storage of Forsythia suspensa

The dominant single tree with strong growth, short and sturdy branches, dense and full flowers and fruits, no diseases and insect pests and pure varieties was selected as the mother tree. Pay attention to observe the period of flowering and fruiting, and grasp the appropriate time to collect seeds. It should be collected in time to avoid the seeds falling off after maturity. Ripe fruits are generally collected from mid-September to early October. Forsythia fruit with mature, full, large and heavy grains should be picked, then spread thinly in a ventilated and cool place, and threshed after drying. After careful selection to remove miscellaneous, select neat, full and disease-free seeds, storage and retention of seeds. The storage of forsythia seeds under different conditions has a great effect on its germination rate as high as that stored in a dryer.

Sowing time of Forsythia suspensa

Forsythia seeds are easy to germinate, so it should be said that seeds are suitable to germinate at higher temperatures. According to the seed storage and germination, combined with practical experience, the cultivation time can be arranged in spring or winter, spring sowing in the first and middle of April, and winter sowing before freezing.

Seed Propagation of Forsythia suspensa

The main results are as follows: 1. Seed treatment: the seed coat of Forsythia suspensa seed is hard, and it takes more than 1 month for forsythia seed to germinate and unearth without pretreatment. Therefore, sprouting treatment can be carried out before sowing, and this method can be used in new introduction areas. The specific method is to select mature and full seeds, soak them in about 30 ℃ of warm water for about 4 hours, fish out, mix wet sand 3 times and pack them in wooden boxes or small vats, cover them with plastic film, place them in the leeward and sunny place, turn them twice a day, and often keep them moist. After more than 10 days, the seeds germinate and can be sowed.

2. Sowing method: seedlings can emerge 8-9 days after sowing, and seedlings can emerge 20 days earlier than seeds without pretreatment. If the land is dry, water is first watered into the border and sown when the topsoil is slightly loose. Spring sowing before and after "Qingming Festival". Winter sowing before freezing (seeds do not need treatment, seedlings can emerge the next year). When sowing, on the finished border surface, open a ditch with a depth of 1 cm according to the row spacing of 20-25 cm, mix the seeds with fine sand, spread them evenly into the ditch, cover the soil flat, and suppress them slightly.

3. Post-sowing management: seedlings can be unearthed in 10-15 days, and the amount of seeds used per mu is about 2-3 kg. Cover the soil should not be too thick, generally about 1 cm, and then cover the grass to keep moist. After the seeds were unearthed, the grass was unearthed immediately. When the seedling height is 10 cm, the seedling is fixed according to the plant distance of 10 cm, and when the seedling height is about 30 cm in the first ten days of April of the following year, it can be transplanted in the field.