Citrus survival factor
Small-scale peasant women found that there are many factors affecting the survival of citrus seedlings, but the main factors are as follows.
1, the quality of citrus seedlings is poor, too thin, and there are few fibrous roots, or they are not well protected during transportation, the roots are damaged by drought, or the roots are cut off too much when taking seedlings in the open field.
2. The soil in the planting hole is not improved, the hole is too small or the fertilization is less, which leads to poor root growth.
3. Improper application of base fertilizer in the hole, uneven mixing of fertilizer and soil, directly planting orange seedlings on the fertilizer, or directly sticking nitrogen fertilizer on the roots, resulting in root burning and death.
The groundwater level is too high. Lead to root rot, or plant it too shallowly, and the root will be exposed to the sun and die.
5. When citrus seedlings are planted, the root system is not straight, curled up in the hole, or the seedlings are planted on a large piece of unbroken pond mud and soil, and the root system cannot be extended.
6. When planting citrus seedlings, the soil was not trodden down, the root water was not poured in time or it was not poured well. The root system is not closely combined with the soil, and the root system hangs and dies. Or the soil is too wet when planting, and the soil is hardened after planting, which makes the fibrous roots difficult to stretch.
7. The citrus seedlings are planted too deeply, and the interface is buried in the soil, which leads to the interface rot and stuffy roots.
Other factors will not be listed one by one, but these main factors have caused the low survival rate of citrus seedlings, so as long as we grasp these factors one by one, the survival rate will naturally come up.
Phase I preparation
1: Check seedling condition and select seedlings.
Bare-rooted seedlings are generally well packaged, because of mechanical damage or other problems during transportation, it is necessary to check the condition of seedlings, first look at whether the branches are damaged, then look at whether the main stems are broken, and identify whether they are dead or dry.
prune
Pruning is to cut off the branches of diseases and pests and redundant weak branches, tender leaves and branchlets, moderately cut off the strong branches that need to be preserved, and remove some leaves after planting to reduce water transpiration. Root pruning is pruning injured roots, cutting off long main roots and big roots, cutting off injured roots and keeping healthy roots.
3: take a dip
Mud beating is made of yellow mud with strong viscosity. If necessary, the citrus roots can be soaked in mud and rooting powder, so that the mud sticks around the roots and is placed in a cool place.
The viscosity of the mud should be such that the mud can stick to the roots without forming a mud shell.
Step 4: Spray.
Before planting, acaricide (killing red spider), agricultural streptomycin (bactericide), difenoconazole (killing bacterial anthracnose canker) and 18 (foliar fertilizer) can be selected for foliar spraying.
5. Details of planting
When planting, dig a transplanting hole at the planting point, scatter the soil around the hole, fill in some finely divided fertile soil, and put the citrus seedlings into the planting hole for righting, and the roots will extend normally. Fill in the topsoil with moderate humidity. When the soil is half to two-thirds, gently lift the seedlings up by hand to lengthen the roots, step on it, and then fill and step on it until it is completely filled. When planting, pay attention to cover the soil slightly beyond the roots to prevent moisture infiltration.