Planting method of Robinia pseudoacacia in Autumn and Winter

It is the best time to cut off and plant Robinia pseudoacacia in late autumn and early winter, which is characterized as follows: first, avoid the peak period of tree planting in spring and busy season, make full use of winter leisure, and the quality of planting time is fully guaranteed. Second, according to the physiological characteristics of Robinia pseudoacacia, the daily average temperature needed for root growth is relatively low, and the aboveground part stops growing after defoliation in autumn, while the underground part still grows for some time, and when the leaves fall, the mobile nutrients of the branches and leaves return to the trunk and root, when the root is rich in storage and nutrition, so that the root system has a growth stage. Third, the land planted with Robinia pseudoacacia is generally dry, and the soil moisture in late autumn and early winter is better than that in spring, when planting is more conducive to root growth, thus improving the survival rate of planting. After the newly planted Robinia pseudoacacia seedlings, the root system has been restored and grown for a period of time before the severe winter, the slow seedling period in the next spring is short, the root system grows immediately after the suitable temperature, and then sprouts into new branches from the rhizome.

First, planting time: plant as soon as possible after all the leaves have fallen in November every year.

Second, seedling size: barren mountain afforestation generally chooses seedlings with a ground diameter above 0.7cm, while greening on the four sides can choose large seedlings with a ground diameter of more than 2 cm. To retain the complete root system, the root length is not less than 25cm, and the root width is not less than 20 cm.

Third, planting techniques: planting in autumn and winter generally adopts the method of digging and planting. When digging holes, separate the upper mature soil from the bottom raw soil. Before planting, the roots should be trimmed and the rotten and split roots should be cut off. The planting depth is the same as or slightly deep with the buried depth of the seedlings. When backfilling the soil, we should first backfill the ripe soil, and then fill the raw soil, so as to achieve "three buries, two steps and one seedling". Truncation can be carried out immediately or 10 days after planting (it can make part of the sap flow back to the root, which is beneficial to root growth), and the height of truncation is 2-3 cm from the ground. After cutting dry, cultivate the soil and bury it.