Main reasons and countermeasures for low survival rate of prickly ash planting

Main reasons and Countermeasures for low Survival rate of Zanthoxylum bungeanum planting

Zanthoxylum bungeanum has the advantages of fast growth, early fruit and high economic benefits. it is the main tree species to shake off poverty and become rich in poor mountainous areas. In recent years, with the large-scale implementation of the project of returning farmland to forest, the planting area of Zanthoxylum bungeanum is increasing year by year, but the survival rate is not high. The main reasons are as follows.

The main results are as follows: (1) in recent years, the seedling of Zanthoxylum bungeanum.

2 starting seedlings and transporting seedlings extensively some nursery households have a strong sense of money, as long as they can sell, they will do whatever it takes, therefore, the seedlings are rough and seriously injured; in addition, there is no packaging, bare root transportation, wind and sun, resulting in the loss of water and overweight of seedlings, and the survival rate is not high after planting.

(3) the poor quality of seedlings, seedlings with low degree of Lignification, seedlings with seriously damaged roots and false seedlings for a long time are not strictly guarded, and they are still used for uphill afforestation, and their vitality is not strong, even if they survive, the preservation rate is not high.

4 planting does not seriously hold the attitude of finishing the task, and does not plant according to the correct planting method. Nest root, exposed root, pine root (not stepped on), damaged bark; broken hairy roots exist everywhere, which is also the reason to reduce the survival rate of planting.

5 after the lack of management, ignore the management and protection work. Such as human and animal trampling, break, long drought without rain, diseases and insect pests and so on. At the same time, in the replanting last autumn, it was found that although the main stem of pepper seedlings dried up, buds were sent out from the ground diameter, and most of the buds were burned to death by dry soil due to lack of timely management.

In view of the above reasons for the low survival rate of pepper seedlings, it is suggested to take the following measures.

The main results are as follows: (1) if the conditions permit, the survival rate of oil pepper varieties planted in Sichuan is higher than that of other varieties if conditions permit, or transporting seedlings from dry land in different places.

(2) three days before seedling emergence, the root system should be irrigated with less loss and more soil; after seedling emergence, 50 plants were used as a bundle, and the roots were packed one by one with straw bags or plastic film, so that the roots could be planted as soon as possible.

(3) the quality standard of pepper seedlings was planted with high-quality seedlings with a diameter of 0.70 cm, a height of more than 50 cm, complete roots and a high degree of Lignification.

(4) dig holes before planting. Separate the surface and interior soil, help the seedlings straight into the hole when planting, first fill the topsoil and then fill the soil to stretch the root system; after planting, step on the solid watering to preserve soil moisture and keep alive. Spring planting, should be carried out when the bud is fast; autumn planting, should be carried out in late autumn and early winter, in order to prevent freezing and wind, 20 cm from the ground after planting dry soil, after the spring soil thawing, peel open the soil to ensure survival.

(5) to strengthen the management and protection of seedlings, it is forbidden to graze in the afforestation area, or pull out the fold artificially. Do not easily pull out the planted seedlings before the fall, but observe them at any time. Sprouting from the ground diameter, especially those sprouting in summer days, should be removed in time to avoid scalding the buds in dry soil, and watering can promote survival when possible.