Cultivation techniques of Sophora japonica and Sophora japonica and their differences in seedling cultivation techniques

Sophora japonica is an important double-effect tree species. in recent years, in order to give full play to the economic value of Robinia pseudoacacia, many people are committed to the research and development of new varieties. At present, the main cultivated varieties are Robinia pseudoacacia, Robinia pseudoacacia and so on. Different varieties have different cultivation methods. As far as seedling raising technology is concerned, double-season locust is more suitable for seed breeding, while Robinia pseudoacacia is more suitable for root-burying breeding.

Double-season Robinia pseudoacacia is suitable to cultivate seedlings by seed breeding method.

When planting double-season Robinia pseudoacacia, the sandy loam with flat terrain, convenient drainage and irrigation facilities and fertile and soft sandy loam is generally chosen as the seedbed. After cultivating the soil and raking fine, the bed was raised before sowing, and 15kg of chemical fertilizer and 80kg of farm manure were applied as base fertilizer per mu.

The best time to sow is in early spring from March to April. On the arranged seedbed, cross the furrow with a depth of about 5 cm according to the row spacing of 25 mi 30 cm. The interval between the sowing plants is about 30 centimeters. After sowing, the cover of the soil will be smooth and sprinkled with water to keep the soil moist and avoid dry cracking of the soil layer. The seedlings can emerge in 20 days. When the seedlings grow to about 20 cm, apply a small amount of nitrogen fertilizer or farm manure to promote seedlings, but also irregular weeding, loosen the soil to keep the soil loose and transparent, which is conducive to root growth. When the seedling grows to about 50 cm, apply a small amount of organic fertilizer to provide sufficient nutrients to the seedlings. After fertilizer application, it should be combined with loose soil in time to mix with hook fertilizer.

Robinia pseudoacacia does not bear seeds and is generally propagated by burying roots.

The cultivation of Robinia pseudoacacia mainly choose sandy soil with deep soil layer, or cultivated land with low groundwater level, good drainage, no source of infection of diseases and insect pests, convenient transportation, well irrigation and flat terrain. In areas where natural conditions are relatively dry, it is necessary to prepare the soil in five autumn, that is, turning in autumn, harrowing in autumn, fertilizing in autumn, ridging in autumn, and irrigation in autumn.

The key step of root-burying cultivation is root control, there are two main methods of root control: one is to keep the tree motionless and dig roots around. Another way is to dig up the tree together with its roots. After the roots are left with 15~20cm, the rest are cut off and stored with scissors and sold at any time. Trees can still be planted or sold. The roots should be stored immediately after they are dug up and sold with them to prevent air-drying and dehydration. Select the sandy loam soil with leeward, light shelter and soil layer thickness of 1.8m to 2.0m and dig the pit where there is no stagnant water. 50~70cm is generally dug about the depth in Beijing area. The roots and fine sand are all buried, screened in advance, and the stones are removed. The fine sand should maintain a certain humidity, but the moisture should not be too large. After all, the upper layer of fine sand should be added with 20~30cm or so to prevent cold. If there is abnormal cold weather, you can add a layer of grass curtain, at the same time to prevent heat, the biggest problem of storage is not heat and mildew.

Double-season Robinia pseudoacacia is suitable for seed breeding and Robinia pseudoacacia is suitable for root-burying breeding. The most suitable cultivation techniques for different varieties are not exactly the same, and growers can choose the appropriate planting techniques according to their own needs.

How to grow Robinia pseudoacacia? Planting and Management techniques of Robinia pseudoacacia

How does Robinia pseudoacacia reproduce? Robinia pseudoacacia is a very beautiful tree with strong ornamental value. At present, seedling farmers in many areas are planting Robinia pseudoacacia. Today, the main content we want to talk about is the grafting methods and planting management techniques of Robinia pseudoacacia!

1 grafting method of Robinia pseudoacacia

1.1 time selection

The grafting time of Robinia pseudoacacia should be from the middle of April to the beginning of May every year, and the grafting must be completed before scion sprouting.

1.2 rootstock selection

In the grafting operation of Robinia pseudoacacia, it is necessary to select 2-3-year-old Robinia pseudoacacia young trees with sturdy, good growth and no diseases and insect pests as rootstocks.

1.3 selection of species

The branches of Robinia pseudoacacia in the same year should be selected, the single plant with good growth form should be taken as the mother plant of the variety, and the full bud should be selected. In practice, bud grafting and branch grafting are the most commonly used ways and means. Special attention should be paid to the timing when operating, and the rootstock must be grafted quickly after sprouting, otherwise, the survival rate of grafting and the growth and development of subsequent branches will be seriously affected.

1.4 budding technology

There are two main ways of bud grafting: square bud grafting and I-shaped bud grafting. The square bud grafting method requires cutting a square on the rootstock, picking up the bark and pressing it back to the previous position to maintain the humidity of the cut. Then remove the square bud piece as large as the square on the scion, and quickly insert it into the square cut on the rootstock, and then tie it up quickly.

The I-shaped bud grafting needs to cut the bark 0.3-0.5cm wide from the back of the scion, measure the same length in the appropriate smooth part of the rootstock, cut the same length up and down, tear off the 0.3-0.5cm wide bark vertically from the middle, then cut off the cortex on both sides, peel the buds around and push them down, embed the buds into the cut of the rootstock and wrap them tightly. Cutting the anvil and removing sprouting and other follow-up operations should be carried out in time when 0.5-1cm was extracted from the buds.

1.5 Graft technology

The grafting methods with branches as scions mainly include insertion, split grafting, tongue grafting and so on, and the survival rate of these methods can reach more than 80%. Compared with bud grafted seedlings, grafted seedlings grow faster and have no disease. The characteristic of this grafting technique is that it is easy to draw materials, grows fast, has good economic benefits, and is suitable for the use of a larger area, but the deficiency is that the seedlings of Robinia pseudoacacia are still propagated, so it is impossible to realize the reproduction of Robinia pseudoacacia seedlings.

2 planting management technology

2.1 Land management

Before transplanting, we should pay attention to digging holes and applying base fertilizer. After burying seedlings, the filling soil should be compacted and poured through the bottom water, and pay attention to keeping it moist. The survival rate of Robinia pseudoacacia is high, which can reach more than 95%, and there is no need to bring soil or medicine when transplanting. In order to ensure the good growth of seedlings, stubble should be flat from the ground after transplanting, the dry branches on the ground should be cut off, and a strong bud should be left from the base. In order to avoid the seedling lodging caused by the strong wind, the seedlings can be buried and tied up when the seedlings grow to 50-60cm.

2.2 Irrigation and fertilization

Robinia pseudoacacia seedlings are recommended to use drip irrigation to ensure water while paying attention to the timely discharge of stagnant water to prevent plant roots from rotting due to stagnant water. Fertilization should be mainly based on farm manure, manure and organic fertilizer, and try to apply less and less.

2.3 loosening soil and weeding

In order to prevent weeds in the field from affecting the absorption of nutrients in soil and fertilizer by Robinia pseudoacacia, weeding should be carried out in time. When the seedlings grow to 40cm or so, herbicides can be used according to the situation, at the same time can be combined with a certain frequency of soil loosening, but to avoid damage to the roots of the plant.

2.4 Disease and pest control

Although the plant of Robinia pseudoacacia has a strong ability to resist diseases and insect pests, it can not be ignored, and it is necessary to pay attention to the prevention of diseases and insect pests. In order to control underground pests, insecticides can be sprayed before planting to prevent damage to seedlings such as locusts, insecticide spray can be used to control rot or nematodes, and insecticides mixed with preservatives can be used to control seedlings.

That's all about the planting and management technology of Robinia pseudoacacia today, and more planting techniques of flowers and plants are brought to you by Huinong net!

Introduction to Seedling techniques of Robinia pseudoacacia

Robinia pseudoacacia is an ideal rare tree species for beautifying and greening urban gardens introduced from abroad in recent years. It will also play a great role in promoting the adjustment of rural industrial structure and increasing farmers' income. No matter in greening and watching, afforestation and sand fixation, or improving the ecological environment, it shows great advantages and potential because of its unique characteristics.

Because Robinia pseudoacacia was introduced into China for a short time, the majority of farmers do not know much about the breeding methods of Robinia pseudoacacia. Based on several years of cultivation experience, the author draws the following conclusions for your reference.

1. Land selection and preparation

Irrigation equipment is required. Choose black soil and sandy soil with high dryness, good drainage and loose texture. 667 square meters of farm manure is applied 2 to 3 cubic meters, ridging, plant distance 40 cm, ridge distance 50 cm.

2. Treatment of seed root

Cut the root to about 8 cm, and the cut should be flat. Soak the cut root segment in ABT No.1 rooting powder 50 mg / kg solution for 2 hours, remove and control dry.

3. Cutting of seed root

When cutting, first look at the soil moisture, about 3 cm below the surface of the soil can be clutched by hand, it is better to let go. Dry plots should be watered before cutting.

The root segment should be placed flat in the planed mulch and covered with soil with a thickness of 5 cm to 6 cm. About 3000 sections of roots are planted with 667 square meters.

4. Management of seedling stage

Weeding should be shoveled early and small to ensure that the nursery is free of weeds. After weeding, we should go to the ground in time and cultivate more soil as much as possible to prevent lodging in the future.

After insertion, it should be compacted to keep the soil moist. 1000 times omethoate EC was used to control aphids.

After the sprouts of Sophora japonica come out, the height of the seedlings is about 30 centimeters, and the first fork should be made at any time.

5. Harvest and storage of seed roots.

In the same year, the root was not picked in autumn, and the next spring, the root was dug up from the ground and sold whenever possible. if it cannot be sold in time, the root must be stored.

Keep the moisture of the seed root during storage, at the same time, it should not be too waterlogged, too waterlogged root is easy to rot. After the roots of the seedlings are cut off in spring, if they cannot be planted in time, the seedlings should be pseudo-planted to prevent loss of water.