How to plant navel orange seedlings

Select high-quality pure tree seedlings, generally field breeding seedlings are cultivated from the end of February to March and from late September to October, and pseudo-planting seedlings are cultivated from mid-late May to early June, and the terrain is flat. the planting density should be controlled at about 55 trees / mu in areas with deep and fertile soil and 66 trees / mu in areas with low rainfall, and the seedlings should be pruned properly before planting. After planting, pour the right amount of water and apply a small amount of fertilizer according to the situation.

I. selection of navel orange seedlings

In order to select the navel orange seedlings with pure varieties, strong and full aboveground branches and glossy leaves, the height of the seedlings should be above 35cm, and there should be three branches, which requires a well-developed root system, a long main root above 15cm, more fibrous roots and less root cutting.

Check whether the seedlings have quarantine diseases and insect pests and other diseases and insect pests, it is best to choose their own breeding or nearby navel orange seedlings, when the seedlings should pay attention to avoid going to the roots, should be planted immediately after the seedlings, it is best to plant virus-free seedlings, container seedlings or fake large seedlings.

Second, the time of transplanting navel orange

According to the growth characteristics of navel orange and the local climatic conditions, the transplanting time of navel orange is determined, and it is generally chosen to be planted after the new and slightly mature to the next new and slightly heading.

1. Cultivation time of field propagation seedlings

Both spring and autumn can be planted, and spring planting is mostly carried out from the end of February to March, when the spring turns slightly green, the temperature gradually picks up, the rainfall is more, and the navel orange seedlings have a high chance of survival. and it can save the work of planting and irrigation in autumn. Autumn planting is mostly carried out after the autumn is slightly mature from late September to October, the air temperature is still high, and the ground temperature is suitable. As long as there is enough water in the soil, the wound on the root system of the seedling will heal faster after planting. And can also grow a new root is conducive to the next spring slightly normal emergence.

2. Planting time of false seedlings

In the dry season of summer and autumn, due to the shortage of Rain Water and insufficient water, the survival rate of seedlings will be affected. It is OK to plant at any other time. It is the best time to plant after a little mature in spring, from mid-to-late May to the first and middle of June.

Third, the density of planting navel orange

The density is sparse as far as possible in the place where the terrain is flat, the soil layer is deep and fertile, the climate is warm and easy to manage, and the density is as thin as possible. In a good environment, the growth and development of navel orange seedlings will be more luxuriant, and the plants are easy to be impatient and stagnant, which will affect the fruit quality.

The plant row spacing should be controlled at 3 × 4m, and the planting density should be controlled at about 55 plants / mu. The planting density should be denser in mountainous areas, river beaches and areas with poor fertility, drought and little rain, and the plant row spacing should be controlled at about 2.5 × 4m. The best density is about 66 plants / mu.

IV. Planting methods of navel orange

1. Planting methods of field seedlings.

Before transplanting navel orange, touch the film, repair the roots and branches slightly, smooth the cut of injured coarse roots, and cut off the withered branches, disease and insect branches and undergrown autumn.

In planting, in order to promote rooting, the roots of the seedlings should be dipped in a thin layer of yellow mud. The concentration of the mud should be that no fingerprints can be seen but the fingerprints can be seen. Add an appropriate amount of crushed calf dung and 1.8% compound nitrophenol sodium 600 times + 70% methyl carbendazim wettable powder 500 times to mix evenly.

It should be noted that the concentration of the mud should not be too strong, so as not to cause rotting roots. if there are too many chemicals in the mud, it is best for two people to operate together when planting, to straighten the seedlings in the planting hole to ensure that the roots are smooth, so that the new root group can stretch naturally oblique, and then fill the broken soil, bury the soil and tighten the soil evenly, and then lift the slight vibration of the seedlings up a little. Make the root closely fit with the soil, and then continue to add soil to fill.

Cover a layer of fine soil around the saplings, pay attention to that the soil can not be higher than the grafting interface, but also make a tree plate, pour enough water after making the tree plate, and then cover with a layer of loose soil after the water seeps down, in order to keep the soil moist.

When planting, it is necessary to ensure that the seedlings are upright, the roots are stretched, the soil is compact and water is sufficient, and the roots should not come into contact with fertilizer directly to prevent fertilizer fermentation from harming the roots. After planting, the tree plate should be covered with some straw or weeds.

2. Planting method of nutrition cup seedlings.

Before planting navel oranges, we should first dig a planting hole in the position of the seedlings, put the nutrition cup seedlings in the center of the hole, remove the plastic bags of the nutrition cup, and then fill the nutrition basket with fertile soil, and then gently make a tree plate with a diameter of about 1 meter. Pour enough planting water, the height of the soil can be exposed to the ground at the root neck, and cover the tree plate with straw to prevent the breeding of weeds. Make sure the soil is sparse