MySheen

What is the tending management of Pinus koraiensis at seedling stage?

Published: 2024-11-08 Author: mysheen
Last Updated: 2024/11/08, The tending management of Korean pine seedling stage is that the emergence stage of Korean pine takes about 20 to 30 days, and the germination is the most exuberant when the temperature is higher than 16 degrees Celsius. Attention should be paid to spraying water to prevent drought and bird pecking harm. In the seedling stage, the root grows faster, the main root can be up to 10 cm long, accounting for about 40% of the annual growth, and can grow 4 to 5 lateral roots. But the growth of seedling height is very small. Therefore, the resistance of seedlings is very poor, we should pay attention to watering cooling, prevent sunburn, and timely topdressing and loosening soil to weed. From the formation of the terminal bud of Pinus koraiensis seedlings, until the growth rate decreases, it lasts about

The tending management of Korean pine seedling stage is that the emergence stage of Korean pine takes about 20 to 30 days, and the germination is the most exuberant when the temperature is higher than 16 degrees Celsius. Attention should be paid to spraying water to prevent drought and bird pecking harm. In the seedling stage, the root grows faster, the main root can be up to 10 cm long, accounting for about 40% of the annual growth, and can grow 4 to 5 lateral roots. But the growth of seedling height is very small. Therefore, the resistance of seedlings is very poor, we should pay attention to watering cooling, prevent sunburn, and timely topdressing and loosening soil to weed. From the formation of the terminal bud of Pinus koraiensis seedlings to the decrease of growth rate, it lasted for about 2 months. The leaf quantity increases, the seedling stem thickens, the main root elongates, the lateral root grows massively, and the lateral root appears twice. If the amount of fertilizer needed for seedlings increases, it should be topdressing in time. And strengthen the management of ploughing, loosening soil and weeding. The seedlings of Pinus koraiensis in the same year are weak and can not be afforested out of the nursery (usually 2-3-year-old seedlings), so the overwintering protection of seedlings is very important. Pinus koraiensis is more resistant to cold, but is afraid of drought, especially the seedlings have germinated in early spring, but the soil has not yet thawed and can not supply water in time, resulting in physiological drought. Therefore, the method of covering soil and burying seedlings is often used to protect seedlings. The method is: first break the trail soil to bury the seedling stem, and then overwhelm the seedling with soil on one side, about 10 cm thick, with no seedling leaves for the degree, and pay attention to the lack of ventilation. The soil will be removed when the soil is thawed to a depth of more than 10 cm in the coming spring. In recent years, some people use warming agent to spray foliar to control foliar transpiration and prevent seedlings from drying up.

 
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