First, look at the fertilization, pay attention to the different types and types of nutrients in different soil types and apply different types of fertilizer.
For example, in calcareous soil or strong acid nursery soil, phosphorus deficiency is prone to occur. It is necessary to pay attention to the application of phosphate fertilizer, especially to increase the amount of phosphate fertilizer. Generally, the soil is mainly nitrogenous. If the nitrogen is sufficient, the proportion of phosphorus and potassium should be increased. The soil texture is different, the nutritional conditions and the ability to maintain fertilizer are also different, and the fertilization methods are also different. The soil fertility is good, the amount of topdressing can be more, the number can be less; the soil fertility poor sand soil nursery, the number of top dressing should be more and less should be used each time.
Second, look at the type of fertilizer seedlings topdressing generally use quick-acting fertilizer.
Such as plant ash, ammonium sulfate, urea, ammonium chloride, potassium chloride, etc., these fertilizers must be completely smashed, not suitable for application in blocks. It can also be applied to organic fertilizers, such as human and animal manure, compost, etc., but it should be fully fermented and decomposed, avoid using raw manure, and the concentration should be thin. Nitrogen fertilizer has strong mobility in the soil. It can be infiltrated into the root distribution layer and absorbed by the seedlings. Potassium fertilizer has poor mobility and the phosphorus fertilizer has poor mobility. It should be applied deep to the roots.
Third, the seedling application seedling growth is generally divided into four stages of emergence, seedling, fast-growing and hardening.
Seedlings can not produce nutrients by themselves. The nutrition depends mainly on the nutrients stored in the seeds. The seedling stage refers to the presence of true leaves in the upper part of the seedlings and the lateral roots in the lower part of the seedlings. When the growth of the seedlings rises sharply, it is sensitive to nitrogen and phosphorus. The fast-growing period is the simultaneous growth of the shoots above and below the ground, and the demand for nutrients is large. The amount and frequency of nitrogen fertilizer should be increased, and the phosphorus and potassium fertilizers should be applied in proportion. In the late growth stage, in order to promote the hardening of the seedlings and improve the resistance, the nitrogen fertilizer should be stopped at the appropriate time. In the hardening period, the growth should be prevented and the fertilizer should be stopped to improve the seedling resistance.
Generally, annual seedlings require more nitrogen and phosphate fertilizers in the early stage of growth to promote the growth and development of young roots. In the fast-growing period, a large amount of nitrogen, phosphorus, potassium and other elements are needed. In the late growth stage, potassium is the main factor, and phosphorus is supplemented to promote the young stem wood. Turn. For large-sized seedlings that have been seedlings, the root system is strong, the distribution is far, and the fertilization should be deep. The range should be large, such as Pinus tabulaeformis, Ginkgo biloba, Acacia, skunk, etc. The shallow roots of the seedlings should be shallow, and the range should be small. Tong, Amorpha fruticosa and flowering shrubs.
Fourth, look at the weather fertilization according to the weather conditions to determine the number of fertilization and fertilization.
The temperature is low, the seedlings absorb less, the temperature is high, the roots grow vigorously, and the amount of fertilizer is much. It is best to choose a sunny weather and fertilize when the soil is dry. In the rainy days, because the roots absorb water slowly, not only the nutrients are not easily absorbed, but also the fats are easily washed away by rain and waste. In the drought, it is best to use the wet application method, that is, to apply the fertilizer to the liquid fertilizer and apply it evenly on the nursery ground; if the rainfall is moderate, the dry application method can be adopted, that is, the fertilizer is applied, and the depth of the ditch should be in the distribution layer of the root system to facilitate the seedlings. Absorption of fertilizer. (Agricultural market broadcast)
Name : QUARTER ROUND Vinyl flooring (spc flooring,click spc flooring)
Board Thickness : 4.0-7.0mm
Wearing Layer Thickness :0.3mm,0.5mm as regular
Surface Texture :Deep Grain,Wood Grain,Marble Grain,Stone,Carpet
Finish :UV-Coating
Installation :Click system(Unilin,Valinge)
Delivery Time :15-25 days
Size:6''*48''(150mm*1220mm)
7''*48''(182mm*1220mm)
9''*48''(230mm*1220mm)
9''*60''(230mm*1525mm)
Backing Foam :IXPE(1.0mm,1.5mm,2.0mm) EVA(1.0mm,1.5mm)
Density :2.07kg/m3
Surface :Wood Embossed,Deep Wood Embossed,Handscraped,Eir.
Usage :Bedroom,Kitchen,Basements,Home,School,Hospital,Mall,Commercial to use.
Features :Waterproof,Wear resistant,Anti-slip,Moisture Proof,Fireproof,durable, anti-scratch, anti-bacterail.
Market :Export to American,Canadian,European Market,Part Asia,Africa Countries.Australia Market
Warranty :10 years for commercial and 25 years for residential
Stone Plastic Composite vinyl flooring is more and more popular new style eco-friendly vinyl flooring. SPC rigid flooring is set apart from other types of vinyl flooring by its uniquely resilient core layer. This core is made from a combination of natural limestone powder, polyvinyl chloride and some stabilizers.
SPC vinyl is a luxury vinyl flooring option with a structurally rigid, 100% waterproof core. SPC is also known as rigid core vinyl, and we use these terms interchangeably. Rigid core engineered vinyl flooring is designed to look like wood or stone, but requires less upkeep.
This flooring is durable, waterproof, and perfect for DIY installation. It`s ideal for both home and commercial areas.
QUARTER ROUND,PVC QUARTER ROUND,SPC QUARTER ROUND,WPC QUARTER ROUND
JIANGSU PERFECT NEW MATERIAL TECHNOLOGY CO., LTD. , https://www.bffloor.com