In the past, most people planted poplar seedlings in the spring, but it is also common for some species to have low survival rates and slow growth. Relevant people specially conducted comparative experiments on poplars in different seasons. The results showed that some poplar seedlings had better planting effects in autumn and winter.

When the autumn frost falls, the young leaves of the poplar are yellow, and when they fall partially, they 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 are as follows:

I. Seedling selection: Select one-year-old or two-year-old high-growth seedlings that grow robustly, have no disease and insect pests, and have straight and complete seedlings, and have a high degree of lignification. Variety should be selected in accordance with the principle of suitable trees in the right place. Spring plants with low survival rate, fast growth rate, and relatively strong resistance to pests and diseases can be selected. Danhong Yang, Nan Lin 895 Yang, Zhong Qian San Yang, can also choose Europe and America 107 Yang, 108 Yang, Zhong Lin 46 Yang and so on.

Second, the nursery to prepare: In the case of conditions permit, the first full-scale land preparation for afforestation, and then dug planting points. Planting holes require at least 50 centimeters (length) * 50 centimeters (width) * 70 centimeters (depths). When backfilling, the top soil is buried around the roots.

Third, 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; planting depth should be more than 70 cm, which is conducive to the absorption of moisture in deep moist soil, and can make The seedlings buried underground are transformed into roots to improve drought resistance and survival rates.

4. Fertilization: In order to increase the growth of trees and shorten the cultivation cycle, the base fertilizer should be used when planting. Requirements of organic fertilizer 5 kg per hole or compound fertilizer 0.1 kg per hole.

Using the method of afforestation in autumn and winter, the survival rate of the 72 agroforestry with low survival rate in spring, 2025 poplar in Zhonglin and 2030 in forest in Zhonglin increased significantly. 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%. .

"Spring planted a disease, winter planted a dream." This illustrates the growth characteristics of the 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.

In addition, the autumn and winter poplar planting also has the advantage that it can use the winter idle labor force to complete the planting task with high quality and large area. The only drawback is that the care time is relatively long. Therefore, considering various aspects, it is not appropriate to use autumn and winter planting in areas where there are man-made and livestock-damaged areas in winter and windy areas in winter.

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