How to propagate black locust? Master these propagation key points

Black locust, commonly known as false acacia, is a deciduous tree widely distributed in China, especially common in the Huang-Huai River basin. Black locust has very high economic value; it is not only ornamental but also edible, and its nectar has very high nutritional value. So how should black locust be propagated?

Black locust

Artificial black locust cultivation techniques can be divided into the seedling-raising stage and the propagation stage. First, in the seedling-raising stage, the seeds need to be treated. From July to September each year, black locust seeds are relatively mature, and the seed pods gradually change from green to reddish brown. To ensure the integrity of the seeds, harvesting at this time is most suitable. After being spread out and dried over a large area, the seed coats begin to crack. The brittle seed coats are removed by manual and mechanical equipment, and after washing the seeds to remove other impurities, the black locust propagation seeds are obtained. To achieve rapid and uniform emergence, the propagation seeds need to undergo deep treatment, such as: 1) repeated soaking in hot water; at this time the propagation seeds are relatively hard, so repeatedly soak them in hot water at 80°C, and after they swell, place them in a moist environment for sprouting; 2) soak the seeds in sulfuric acid for 30 minutes, wash them clean, then soak them in water for 12 hours, and they can be sown; 3) in a moist environment at about 10°C, mix fine sand with the seeds and bury them for about 2 months, etc. Second, the sprouted seeds need to be sown. Sowing is generally done in spring. When raising seedlings in seedbeds, the sowing rate for bed sowing is usually 22.5-37.5 kg/hm2, and for ridge sowing 45-60 kg/hm2. Before sowing, water should be applied enough to soak the bottom layer, and the soil covering thickness should be about 0.6-0.8 cm. Third, management during the seedling-raising period is especially important. Because the seeds emerge in a relatively short time, the seedlings need to be kept in moist soil and water conditions during the seedling stage to prevent surface crusting, but irrigation should also be reasonable; the seedlings must not be kept waterlogged. After about 4 weeks, one pest-control, soil-loosening, and weed-removing operation can be carried out. During this period, the weaker leaves among the seedlings can be removed to ensure photosynthesis during growth. Afterward, when the saplings are close to about 1 m, final thinning can be carried out, and then fertilization should be done before July. Finally, during the growth period of black locust, gradually reduce fertilization, irrigation, weeding, and other operations to ensure its natural growth state.

For black locust propagation, after August, stop watering to enhance lignification and improve the ability to resist winter drying. Use black locust seedlings of the current year, but keep the seedling root system within the 15-20 CM range, and plant the seedlings in spring. To improve the survival rate, the seedling roots need chemical treatment. According to past data, seedlings soaked in naphthalene acetic acid for more than 12 hours can achieve a survival rate of more than 80%, but note that each seedling needs a certain spacing, and a distance of 45CM is relatively moderate. With proper treatment, a black locust forest can be cultivated. In addition, there are also methods such as asexual propagation, grafted seedling raising, and root cutting seedling raising.

Because surviving black locust has strong adaptability, there are no strict requirements for the soil used for cultivation or the afforestation method. Once the young forest is established, as long as soil loosening, fertilization, weeding, and pest removal are carried out regularly, the black locust forest can grow luxuriantly. However, note that the growth peak of black locust is in July, so fertilization is generally most appropriate in June. In addition, young seedlings are prone to drying out, so water must be strictly controlled at the end of August to enhance lignification and reduce damage caused by drying out.

Which company is good for Chinese scholartree seedlings_Summary of key points for Chinese scholartree seedling raising techniques

Content summary: Chinese scholartree belongs to the Fabaceae plant family. The tree shape is slightly tall, the leaves are compound, and the whole plant can be used as medicine, which also increases the planting value of Chinese scholartree. What this article will share with you next is which company is good for Chinese scholartree seedlings, and a summary of key points for Chinese scholartree seedling raising techniques.

[Which company is good for Chinese scholartree seedlings]

       The market price of Chinese scholartree is relatively low, but the price of Chinese scholartree is unstable because of differences in origin and variety. For purchasing Chinese scholartree seedlings, one should go directly to a state-recognized seedling base, where both price and variety are trustworthy.

▌Shandong Golden Century Seedling Base

       Address: Yuncheng, Shandong

       Shandong is located east of the Taihang Mountains, and Yuncheng is known as the famous city of Water Margin. There are many local seedling bases, and the Chinese scholartree seedlings of Golden Century Nursery are a key project of the base. Its cultivation area reaches about 800 mu, and the main scholartree varieties are Chinese scholartree and black locust. It mostly sells seedling-grown small seedlings of about 0.5-3 cm. In less than 9 years of development, the base has already sold Chinese scholartree seedlings to about 50 countries in China, including Henan, Chongqing, Inner Mongolia, Jiangsu, Beijing, and Tianjin.

▌Shandong Heze Wansen Nursery

       Address: Yuncheng, Shandong

       With high standards as its foundation, the Wansen base organizes scientific and technological cultivation and can ensure the improved quality of every plant. Whether in seedling raising, promotion, or sales, the base has always been among the top, integrating production, research, and training, and is a leader in local agricultural economic development.

▌Shandong Water Margin Seedling Base

       Address: Yuncheng, Shandong

       The Water Margin Seedling Base, which specializes mainly in cultivating Chinese scholartree seedlings, is the first choice in China for propagating Chinese scholartree seedlings. It has introduced professional Chinese scholartree planting and maintenance techniques. The seedlings have the advantages of a high survival rate, strong resistance to pests and diseases, easy maintenance, and good timber formation. The cultivation area of Chinese scholartree seedlings in the base reaches more than 1,000 mu.

[Summary of key points for Chinese scholartree seedling raising]

       For raising Chinese scholartree seedlings, methods such as sowing, cuttings, root burial, and grafting are mainly chosen, but the key factor for successful seedling raising lies in later maintenance and management. The following key points should be noted:

▌Seeds

       First, the seed collection time must be controlled in autumn; for example, October and November are the best seasonal choices. Second, after seed collection, the treatment must include a rubbing step to remove the outer coat of the Chinese scholartree seeds, which can improve the survival rate. Third, treatment of Chinese scholartree seeds before sowing is necessary; the seeds used for sowing must be in a split-open state.

▌Plastic film

       Whether sowing, cutting, or grafting, plastic film must be used during seedling raising. It can be used to control moisture and can effectively prevent seeds from being damaged by pests and diseases during the germination period.

       Before high-temperature weather arrives, the plastic film needs to be opened in time to avoid scorching the seedling roots, and also to allow the Chinese scholartree roots to carry out photosynthesis in time.

▌Thinning

       When Chinese scholartree is propagated by sowing, after the plastic film is opened, thinning and replanting work must begin immediately to ensure that the spacing of each surviving Chinese scholartree seedling is about 15 cm. Seedlings that are too dense should be removed, and empty spots should be replanted.

Key point: For Chinese scholartree seedlings, wild conditions are best; appropriate fertilization may be applied, and watering is not needed. Second, seedlings used for transplanting do not need pruning. Generally, pruning and shaping can begin only for Chinese scholartree trees more than 3 years old.

Autumn and winter planting techniques for black locust

    Black locust is widely used in landscaping because of its strong adaptability, but surveys have found that some black locust grows less vigorously after planting. The reason is largely related to improper planting techniques. Key technical points for trunk-cut planting of black locust in autumn and winter:

    1. Planting time: plant as soon as possible after all leaves have fallen in November each year.

    2. Seedling specifications: for general barren hill afforestation, choose seedlings with ground diameter above 1 cm; for roadside greening, choose large seedlings with ground diameter above 2.5 cm. When planting, keep a complete root system; the root spread should be no less than 20 cm, and the length no less than 25 cm.

    3. Planting method: adopt the method of digging the hole and planting immediately. When digging the hole, separate the upper fertile soil from the lower raw soil. The planting depth should be the same as or slightly deeper than the depth at which the seedling was buried. When filling soil, first fill fertile soil, then raw soil.

    4. Precautions: 1) Before planting, trim the root system and cut off rotten roots and split roots. 2) Trunk cutting can be done immediately after planting or 7-10 days after planting. 3) The trunk cutting height is 3-5 cm from the ground. After cutting, cover and bury it with soil.

    Choosing to plant in late autumn and early winter has two advantages: first, it follows the rainy season, and the soil moisture condition is better than in spring, which is beneficial to root growth; second, the root system has already recovered before the severe winter arrives and has grown for a period of time, so the next spring's recovery period is short. Once the temperature is suitable, the roots grow and quickly sprout new buds to form new branches, thereby increasing the planting survival rate.

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