The spot burial method of cluster pewter is roughly the same as the flat burial method, but the method of burying is different.The spot burial method of cluster pewter does not bury the soil in some germination places, so that the buds are exposed outside, which is beneficial to germination, and the rest is thick with soil. Buried in order to increase its water retention capacity, reduce the number of irrigation, in order to maintain the ground temperature. The following are the operating steps. According to a certain row spacing, open a ditch with a depth of about 3cm, and lay the seed strips flat in the ditch. Then, every 40cm, cross the rows to form an oblong soil about 20cm long, 8cm wide, and 10cm high. heap. There should be 2 to 3 buds on the branches between the two mounds, which depend on a relatively high temperature to germinate and grow, and the branches retained in the mound take root. After burying the mound, step on the mound to avoid the collapse of the mound when flooding occurs. The spot burying method of cluster pewter seedling emerges quickly and neatly. The plant spacing is more neat than that of the flat burying method, which is beneficial to fixed seedlings, and the water retention performance is better than that of the flat burying method.
3. Management after burying the clumps of white wax
After the seedlings grow and are buried, a series of management measures are required to increase the number of seedlings and increase the survival rate. The following are the main management measures.
Irrigation
After burying the strips, irrigation should be carried out in time, and the soil and the burying strips should be closely combined. In the future, the frequency of irrigation should be higher to keep the soil dry and lack of water. The interval of watering should follow the principle of keeping moist and preventing the ground temperature from being too low, usually every 5-6 days before pewter takes root. When watering, pay attention to the flow of water not to be too rapid, otherwise it will rush out of the buried strip or bury the buried strip too deep, which will affect the rooting and germination.
Remove thick soil and bury exposed branches
When the clusters of pewter are irrigated, the soil is usually washed and deposited. When scouring occurs, it will not only wash away the thin soil on the branches, but also rush out of the branches when it is more serious, causing the branches to lose their vitality because they cannot get water supply. When siltation occurs, increasing the thickness of the soil layer above the branches will adversely affect the germination. The above two phenomena can lead to lack of seedlings and ridges. Therefore, before the buried sticks have taken root, the buried soil should be checked regularly, the thick soil should be removed, and the exposed branches should be buried.
Clumping pewter soil and thinning
It is usually easier for the buried branches to root at the base, but it is more difficult to root above the middle, but it is easy to germinate and grow branches, so some phenomena are prone to occur, such as partial roots without seedlings on the roots and roots under the seedlings. When the young ash seedling grows to 10~15cm high, it should be carried out at the same time as the cultivating and weeding. Soil is cultivated at the base of the seedling to speed up the formation of new roots at the base of the new stem of the seedling. When the ash seedlings grow to about, thinning should be carried out immediately. It is usually carried out in batches. The first time we have been to dense seedlings or weak seedlings with diseases and insect pests, the second time we plan to produce seedlings and determine seedlings.
Tillers and snags
When the pewter seedlings grow to about 40cm, they begin to germinate in large numbers of axillary buds. Tillers should be removed in time to accelerate the growth of the seedlings. Usually the tiller height is about 1.2~1.5m, and its height should be limited, not too high, to prevent thin stems from appearing.
In the autumn of that year, the underground old branches connected between each ash seedlings were cut off with a sharp tool, and the connections between the clusters of ash seedlings were made to grow independently, thereby growing into a complete and independent root system