Advantages and seeding of hole seedling

Advantages of hole seedling

1. The hole tray seedling raising is made of filling materials, planting, and mechanical equipment can be used in the process of tooth induction, which is convenient and suitable for industrial production.

2. The seeds are distributed symmetrically, and the seedling rate is high, which reduces the seed cost.

3. The seedlings of each acupoint in the hole tray are relatively independent, which not only reduces the mutual transmission of diseases and pests, but also reduces the competition of nutrients among seedlings, and the rhizome can also grow and develop better.

4. Improving the relative density of pre-seedling is conducive to intensive management, improving the utilization rate of greenhouse and reducing costs.

5. Because of unified planting and management, the seedling growth and development are consistent, the seedling quality is improved, and it is conducive to industrial production.

6. Transplantation of seedlings and big trees is simple and convenient, with no root injury, high survival rate of transplantation and short slow seedling period.

7. Pot seedlings are conducive to storage and transportation.

Hole seedling seeding

The cultivation substrate should be at least 5mm. Only under the action of gravity can the water in the cultivation substrate seep out. The heavier the gas enters the acupoint, the higher the oxygen content. The shape of the acupoints is most suitable for the square trapezoid, which helps to correctly guide the downward bending and extension of the rhizome, rather than circling the inner cavity like the circular or lateral vertical acupoints. The deeper acupoints provide a very favorable premise for the drainage and permeability of the cultivation substrate.

Some seedlings are placed in the middle of the cave and there are also air vents, so that gas can also flow in the middle of the plant. Make the leaves comfortable, reduce diseases and insect pests, dry and symmetrical, and ensure that the whole plant rises symmetrically.

The color of the seedling plate also determines the environmental temperature of the plant root. Generally, the gray-black seedling tray is selected in winter and spring because it can digest and absorb more solar energy and improve the ambient temperature of the root. In summer or late autumn, it needs to be changed to silver-gray seedling tray to reflect more light sources and prevent excessive root temperature. Generally, the milky seedling tray has high light transmittance, which will affect the growth and development of roots, so it is rarely selected. Natural white foam plastic seedling tray is excluded.

Through thorough cleaning and disinfection of the seedling tray, it can also be reused. It is recommended to use a safer quaternary ammonium salt disinfectant, which can also be used as sterilization and algae in irrigation systems to prevent the growth of bacteria and virus moss. It is not recommended to use bleach or hydrogen for cleaning, because chlorine will have chemical changes with the plastic in the acupoint plate, resulting in toxic substances.

Selection of matrix:

A better culture medium should have the following characteristics: idealized water volume; Good drainage capacity and gas volume; It is easy to get wet again; Good porosity and uniform gap; The transport organization structure is relatively stable with less smoke and dust; Appropriate PH value, 5.5-6.5; It contains an appropriate amount of nutrients, which can ensure the requirements of young leaves for nutrients; The salt water level is very low, EC is lower than 0.7 (1:2 dilution method); The grain size of cultivation medium is uniform; No plant diseases, pests and weeds; The quality of each batch of cultivation substrate is consistent.

Because the role of ceramsite with relatively small particles is to improve the water conservation and power generation of the cultivation medium, rather than porosity. It will improve the drainage pipe performance and permeability of peat soil cultivation substrate, and choose to add vitrified beads instead of ceramsite. On the other hand, if you want to improve hydropower, you can add a certain amount of granular ceramsite.

1. The culture medium should be fully soaked before filling, generally 60% is the most suitable. Hold the cultivation substrate with your hands, without water extrusion. If you release your hand, you will agglomerate, but if you touch it gently, the cultivation substrate will disperse. Don't be too dry. After watering in the future, the cultivation substrate will collapse, resulting in poor permeability and poor rhizome growth and development.

2. The filling level of each acupoint should be uniform, otherwise the drying speed of the acupoint with smaller matrix is faster, which makes the water management method unbalanced;

3. The acupoint cultivation substrate for planting large seeds such as melons and vegetables should not be too full;

4. Prevent the cultivation substrate from extruding, otherwise it will damage the permeability and drying rate of the cultivation substrate. Because the cultivation substrate pressure is too tight, the seeds will rebound, resulting in different final germination depth of the seeds.

Note: The hole depth should be consistent to ensure the planting depth is also consistent.

The more seeds, the heavier the planting depth.

Symmetrical covering

Generally speaking, these vegetable seeds can only germinate successfully in the dark environment, so it is also very important to select the appropriate covering layer. The selection of the covering layer should understand the following aspects: it can improve the ambient humidity around the seeds, maintain a good level of air permeability, and give the seeds enough air permeability O2. It is recommended to use coarse grain ceramsite as the covering layer. Vitrified beads can easily grow moss.

The first irrigation after planting:

There are two methods: when seeds grow near the seedbed, a small amount of water must be watered first, and then watered after all seedling trays are moved to the seedling stage. If the seeds are in the dental reminder room or simple dental reminder room space (after the reed foil is covered with moisture), they should be watered once before entering the dental reminder room. It is recommended to use atomizing nozzle or dense nozzle.