Transplanting seedlings is best done before germination in spring. When transplanting, sufficient base fertilizer should be applied, especially when planting on barren land. The holes should be large and deep, and sufficient organic fertilizer should be applied to facilitate the expansion of roots and the growth of aboveground parts. After transplanting, we should pay attention to strengthening management, applying nitrogen fertilizer and organic fertilizer to promote plant growth. Tamarind is resistant to high temperature and likes light. With sufficient light, more fruits will be produced with good quality. On the contrary, if you shade, you will bear less fruits and have poor quality. Therefore, pruning and shaping of long branches, dead branches and dense branches should be carried out every year to ensure ventilation and light transmission of the tree, promote the germination of new branches, and avoid big and small years, which is conducive to stable and high yield and improve quality. Pruning should be done after fruit picking in late spring and before spring bud germination.
According to the existing literature, India, Thailand, Sudan and other countries have done a lot of research on sexual or asexual propagation techniques of Zizyphus jujuba. The research on container seedling raising technology of tamarind mainly focuses on the selection of optimal medium, seed size and container specifications of tamarind. In addition, the technology to improve the growth and quality of seedlings was also studied. CHATTOPADHYAY P K and others in India discussed the effects of different substrates on seed germination and seedling growth of Zizyphus jujuba in 1988, and summarized the best culture substrate for container seedling raising of Zizyphus jujuba. To cultivate excellent container seedlings of Ziziphus jujuba, we should choose large seeds with a diameter of 108 mm or more, and the container size is 25 cm? 15 cm is more suitable. After studying the effects of fertilizers on the growth and yield of Ziziphus jujuba seedlings, some scholars think that measures such as coating Ziziphus jujuba seeds with biological fertilizers before sowing, inoculating VAM mycorrhiza, or applying phosphate fertilizer have significant effects on germination rate, seedling growth and excellent seedling yield.
At present, in the production of tamarind abroad, in order to keep the excellent characters of the female parent, grow fast, set fruit early and grow consistently, the asexual propagation method is often used. The research on cutting technology of Suaeda salsa has not been reported in domestic and foreign literature. The study on tissue culture technology of Suaeda salsa cotyledons, hypocotyls and shoot tips developed into complete plants showed that the survival rate of tissue culture seedlings was over 75%. Tissue culture seedlings are rarely used in production because of high technical requirements and high cost. Grafting is the main way of asexual reproduction. The research on grafting technology of Zizyphus jujuba at home and abroad began in the 1990s. Some experts and scholars have studied the grafting technology of Ziziphus jujuba from different angles such as grafting method, grafting time and age effect.
In India, Thailand, Sudan and other countries, grafting methods such as bud grafting, twig grafting, cutting grafting and grafting have been applied to the propagation of Suanzao on a large scale, with good results. AWASTHI O P, an Indian scholar, reported that in the semi-humid climate zone of basta, the best time for grafting Zizyphus jujuba was from March to April, and the grafting survival rate was 76.6% ~ 82.5%. Grjazev A's in-depth study found that temperature and relative humidity had significant effects on the germination and grafting survival rate of Ziziphus jujuba scion. SATISHA J, SATHISHKUMAR V and others used twig grafting or cutting grafting to study the rootstocks of Ziziphus jujuba seedlings of different ages. The results showed that when 9~ 10-month-old Suanjiao seedlings were used as rootstocks, the growth indexes such as height and diameter of grafted seedlings were the largest, and the survival rate was 84.5% ~ 84.99%.
Li Jianzeng, a Chinese scholar, has studied and summarized the high grafting technology, which is mainly used for the transformation of low-yield and inferior tamarind trees. The survival rate of grafting is over 85%, which provides valuable information for the transformation of low-yield tamarind trees. These successful grafting techniques at home and abroad have opened up an effective way for Zizyphus jujuba to take the road of clonal improvement and obtain more direct and significant genetic gain. Seedling raising in February-March. Soak the seeds in warm water 1 ~ 2 days before sowing. After the seeds swell, drill or sow as needed. Germination began about 5 days after sowing, and basically sprouted after 20 days. The seedlings grew rapidly in the first few days after being unearthed. After 1 month, the average height can reach 15 ~ 20 cm, the root depth can reach more than 10 cm, and the root width is 5 cm ×5 cm. During this period, the seedlings should be slightly shaded. After 5~6 months, the seedlings are 50 cm high and can be transplanted in August ~ September. It is better to plant in rainy season in the following year, and it can also be planted when changing leaves in spring. Direct seeding afforestation can also be carried out after the rainy season, with 2 ~ 3 seeds planted in each pool, and the germination rate is as high as 95%. After 1 month, the height of seedlings is 5 ~ 13 cm, but the growth of direct seeding seedlings is slower than that of seedling seedlings. Since livestock like to eat its leaves, management should be strengthened after afforestation.