Winter jujube seedling cultivation knowledge
Date:2018-09-30 Source:Cangzhou
yongcheng jujube planting co. LTD Views:
The winter jujube seedling base generally chooses to plant jujube seedlings from mid-September to early December to ensure the survival rate of jujube seedlings. Planting needs to dig up the planting pits of 60 cm in length and width, apply the base fertilizer, fill the soil, water the plants, and plant them. Autumn jujube trees are good for high-quality seedlings with high degree of lignification. Pour water once before the seedlings. The seedlings require complete root system, the length of the main root is more than 30 cm, and the lateral roots and fibrous roots are less injured. The seedlings should be planted with the seedlings; the tree pits are dug at the planting points, some of the mature soil is backfilled, and then the seedlings are placed in the pit to straighten and fill the fine Wet the soil and lift the seedlings up slightly to stretch the roots and fill the soil. The planting depth requires that the roots and stems are level or slightly deeper than the ground, the deepest is no more than 5 cm of the rhizome, and a small pile of soil is cultivated after planting; the quality of the jujube seedlings is 20 cm, and the quality of the cuts is 1/3 of the height of the seedlings. And cut a secondary branch to facilitate the sprouting of new branches. Winter jujube seedlings are poured into the frozen water one time before winter, the time is in the middle and late November; the seedlings should be pressed southward from the end of November to the beginning of December to prevent the earth temperature change from causing sunburn on the roots of the seedlings. When it is overwhelmed, it can't be bent. Because the seedlings are brittle and hard, it is easy to cause laceration or breakage. When overwhelming, firstly pour a 20 cm high slope on the south side of the seedlings, gently pry the seedlings on the inclined platform, and then cover 20 Cm wet fine soil. Winter jujube seedlings sprout late, the soil removal time is slightly later than apples and pears, generally in mid-April, and the time to go to the soil can be postponed. Go to the soil twice to complete, first remove a layer of thin soil, and then gradually remove all the soil, and straighten the seedlings; first germination water before the germination in spring, and then cover the film to protect the survival rate of seedlings. Winter jujube seedlings are a kind of drought-resistant crops, but for different periods of winter jujube seedlings, different humidity will have a great impact on its growth. Winter jujube requires high humidity, and its pollen fertilization has results. It will have a role. If the humidity is not enough, it will lead to a reduction in production. Generally, the humidity will reach 70% to 80%. But if the humidity is less than 40%, the pollination will be bad, and the falling flowers will be bad. Rain Too much can cause pollen to burst and not germinate, and the result will be reduced. After the results of winter jujube seedlings, winter jujube requires more rainy weather, especially such weather will make the temperature difference between day and night large, which is conducive to the production of sugar and increase the taste of the fruit. Too much rain will cause fruit cracks in the winter jujube, pulp and other fruit diseases. At the same time, it will have an impact on the quality of the fruit. Although the winter jujube has a strong drought resistance, the grower must pay attention to maintain a reasonable soil moisture.