How to improve the cuttage survival rate of seedlings and flowers

The mother plant of strips should have the conditions of good quality, robust growth and free from diseases and insect pests. On the same plant, the sunny branches in the middle and upper parts of the year should be selected, with shorter internodes, stout branches and leaves and full bud tips. It is not suitable to choose the branches that are about to bloom and the branches that are about to grow. On the same branch, the middle and lower branches should be selected for hard branch insertion, and the tender head should be used for chrysanthemum and so on.

Selection of cutting substrate

This kind of matrix should have the characteristics of easy to increase soil temperature, water retention, ventilation and so on.

Treatment of cuttings

The chemical treatment before cutting has the effect of promoting rooting. Soft branch cuttings are generally cut into a section of 8 cm-12 cm long, with 3 buds on it, and the cut at the lower part of the cuttings should be 0.5 cm below the node. The incision should be smooth, cut off the lower leaves, leaving only the top 2 Murray 3 leaves. The insertion depth is generally 3 cm.

Create a rooting environment

The suitable temperature for rooting of most flowers is 20 ℃-25 ℃. Tropical flowers require more than 25 ℃-30 ℃. Generally, the soil temperature is 3 ℃-5 ℃ higher than the air temperature. The relative humidity of the air in the insert bed is 80% Murray 90%, which is conducive to rooting. Soft wood cuttings require about 30% light. The moisture content is moderate, the cuttage is slightly larger at the initial stage and slightly dry at the later stage. Therefore, the suitable period of soft wood cutting in open field in North China and other places is from mid-June to mid-August, which coincides with the rainy season in North China, which can better meet the temperature and humidity conditions needed for cuttings to take root and is beneficial to the survival rate of cuttings.