What measures need to be taken to improve the survival rate of transplanted plants? Why?

When seedlings are planted, they should not be planted too deeply, and they should be planted shallowly with high soil.

Use of rooting agents.

Reason (corresponding to the numerical number):

In this way, it can be thoroughly watered and can effectively prevent the bottom of the flowers and trees from drying out.

It is easy for the rapid growth of the root system, which reduces the reactivation time of seedlings and can promote the rapid rooting of seedlings.

Rooting agent is a chemical agent commonly used in seedling transplanting, the purpose is to allow the transplanted damaged seedling root system to quickly restore growth, and it is also the key to ensure the survival of seedlings. Rooting agent can promote the rapid rooting of plants and improve the survival rate of plants.

How to improve the survival rate of plant transplanting during the growth period.

How to improve the survival rate of plant transplanting during the growth period.

Transplanting before germination, transplanting when seedlings, transplanting on cloudy days, transplanting in the evening, picking leaves before transplanting, pruning before transplanting, transplanting with soil, watering thoroughly before transplanting, soaking the roots of seedlings in the root powder solution, seedlings should be compacted while filling when they are put into the pit to fill the soil, gently lift the roots, water thoroughly in time, shade, and make up for watering in time.

1.Transplanting before germination, transplanting when seedlings are small, transplanting on cloudy days, and transplanting in the evening.

2.In order to improve the survival rate, it is necessary to use shade nets when transplanting. And not needed after transplanting.

3.When transplanting, if the water absorption rate of the newly planted plant is not the rate of transpiration, the plant will wilt, so transplanting on a cloudy day or in the evening during transplanting is a practice to reduce transpiration.

Criteria for selecting a tree species:

The excavation site is similar to the planting site.

The tree is easy to dig and load and unload.

The tree shape is beautiful, the tree is healthy, and there are no diseases and pests.

d、134。

When transplanting, if the water absorption rate of the newly planted plant is not the rate of transpiration, the plant will wilt, so transplanting on a cloudy day or in the evening, cutting off some branches and leaves, and covering the plant with shade are all practices to reduce transpiration.

Transpiration refers to a process in which the water in the plant body is dissipated into the atmosphere in the form of water vapor through the stomata of the leaf, the stomata of the leaf is the gateway for the water vapor to go out, the light intensity affects the opening and closing of the stomata on a cloudy day or in the evening, the light is not strong, it is not conducive to the opening of the stomata and affects the outgoing of water vapor, and the transpiration is reduced, so that the plant will not wilt due to a large amount of water loss, and the survival rate of transplanted plants is improved

Leaves are the main part of transpiration The root system of transplanted plants will be more or less damaged, and the ability to absorb water will be reduced, so when transplanting plants, it is often necessary to cut off a large number of branches and leaves to reduce transpiration, reduce water loss, avoid wilting of transplanted plants, and improve the survival rate of transplanted plants Transplanting with soil is to protect young roots and root hairs It can be seen that BCD is in line with the topic

Therefore: BCD

Three key points to improve the survival rate of bare-root seedlings and transplanting.

Most of the water absorbed by the plant body from the soil through the roots is lost through transpiration, and the main part of transpiration is the leaves; Just transplanted plants, young roots and root hairs will be damaged to a certain extent, the water absorption ability of the roots is very weak, remove part of the branches and leaves, and choose cloudy days or evening transplanting, can reduce the transpiration of plants, reduce the loss of water, is conducive to the survival of transplanted plants The main parts of root absorption are root hairs and young roots, transplanting plants generally to bring a mound, so that the root hairs and young roots are not damaged, conducive to root water absorption, improve the survival rate Transplanting at noon in the scorching sun, the transpiration of plants is very vigorous, It will lose a lot of water, which is not conducive to the survival of saplings, so you can cover the plants with shade

Therefore, c