For a long time, poplars were mostly planted in the spring, and the survival rate of some species was often low and the growth was slow. We conducted comparative experiments on poplars in different seasons. The results showed that some poplars were better planted in autumn and winter. After the “frost†in the fall, poplar seedling leaves yellow, and when it falls partially, it can be planted in autumn. At this time, the aerial parts of the seedlings have ceased to grow, and life activities have shifted to a low-consumption state, while the root system can also undergo restorative growth for more than one month after being traumatized (ie, after planting). In general, newly planted trees will grow new roots in the fall. In the case where the soil is not frozen, poplars can be planted in winter. Although the roots of the trees cannot grow immediately after planting, the underground root system can grow after the soil temperature rises in early spring. When the temperature reaches the temperature required for tree sprouting, the underground root system has completely recovered, new roots are created, and the upper part of the ground is promoted. Specific planting techniques: Choose one-year-old or two-year-old high-quality seedlings that grow robustly, have no disease and insect pests, have straight and complete seedlings, and have a high degree of lignification. The species should be selected in accordance with the principle of suitable trees, and 72 springs with low survival rate but high growth rate and relatively strong resistance to pests and diseases can be selected in spring. 108 Yang, Zhong Lin 46 Yang and so on. With conditions permitting, the land for planting shall be fully site-prepared and dug holes. The planting hole requires at least 50 centimeters (length) 50 centimeters (width) 70 centimeters (deep depth). When backfilling, the top soil is buried around the root. To minimize the time from planting to planting before planting, it is best to use seedlings produced in the region to avoid long distance transportation. The planting depth should be more than 70cm, which is conducive to the absorption of moisture in deep moist soil, and can make it buried. Underground seedlings are transformed into roots to improve drought resistance and survival. In order to increase the amount of tree growth and shorten the cultivation cycle, basal fertilizer should be used when planting. Requirements of organic fertilizer 5 kg per hole or compound fertilizer 0.1 kg per hole. Using afforestation in autumn and winter, the survival rate of afforestation of 72 poplars, 2025 poplars in Zhonglin, and 2030 poplars in Zhonglin forests with low survival rate in spring is significantly increased. The experiment showed that 72 Yang, Zhong Lin 2025 Yang and Zhong Lin 2030 Yang were neglected during spring afforestation. There was a problem in one link and the survival rate of afforestation was less than 50%. In autumn and winter afforestation, the survival rate could be increased to more than 80%. . “Planting a disease in spring and dreaming in winter.†This graphically illustrates the growth characteristics of afforestation trees in different seasons. Practice has proved that, in addition to increasing the survival rate of several plants with low survival rate in spring, planting in autumn and winter has significant differences in the growth of trees and planting in spring. Taking the annual Zhonglin 2025 Yang as an example, the amount of trees planted in autumn and winter is 1.8 times that of spring planting. The advantage of planting poplars in autumn and winter is that they can use idle winter labor to complete their planting tasks with high quality and large areas. The only downside is that they have to watch for a long time. Therefore, it is not appropriate to use autumn and winter planting in areas where there are man-made and livestock-damaged areas in winter and areas with strong winds in winter. (Source: China Green Times Ye Yantao Li Yanxia)
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