Winter turn fertilization
Winter turns. Through winter tumbling, the soil can be loosened, the permeability of the soil can be enhanced, the physical and chemical properties of the soil can be improved, and the environmental conditions can be created for the growth of peach trees. The pests and diseases can be effectively controlled. The saplings can be 1 m outside the canopy and the vertical part of the canopy. Deep turn left and right, expand year by year, until the connection. The deep turning depth is 20-30 cm. The big tree can be combined with the application of the base fertilizer to carry out the deep turning of the whole garden. It should be noted that it should be shallow near the main trunk and deeper away from the main trunk.
Fertilize. The types of fertilizers are mainly delayed mature organic fertilizers, including mechanism organic fertilizers and self-stacking farmhouse poultry and livestock fertilizers. The amount of fertilization varies depending on the age, growth and growth conditions, but the amount of base fertilizer should account for more than 60% of the total fertilization in the whole year. The fertilization method is mainly based on ditch application. The depth of the vertical ground on the periphery of the canopy of the peach tree is 40 cm deep and 30 cm wide, and the ditch is surrounded around the canopy, and the fertilizer is applied to the top of the soil.
Winter pruning
Pruning of young trees. The pruning of juvenile trees is mainly to enlarge the canopy and lay a good tree foundation for future high yield. When pruning, according to the requirements of the tree shape, look at the tree pruning, select, equip and cultivate the main branches and side branches according to local conditions, and appropriately retain the auxiliary branches and the result branches. At the same time, the angle and growth of the main and side branches are adjusted in time according to the requirements, so that the primary and secondary points are distinct, and each has its own occupied space.
The pruning of the fruit trees. After 5-6 years of planting, the peach tree began to enter the fruiting period. The main task of pruning is to maintain the balance of tree potential in each part, adjust the balance of growth potential of main and side branches, cultivate and update branch groups, and prevent premature aging and stenosis.
Pest Control
Qingyuan. The peach branches, peach bags, and scraped old skins cut by winter shears should all be cleared out of the peach orchard, and processed centrally to effectively control the pest and disease base.
Medication. After winter pruning, spray Baume 5 degree stone sulfur mixture and 0.3% sodium pentachlorophenol to prevent wintering pests and diseases.
Brush white. The whitening agent is made up of 1 kg of quicklime, 3-5 kg ​​of water, and 2 tsp of salt. The preparation method is as follows: firstly, the quicklime is adjusted into a paste with water, and then the salt is dissolved by a small amount of hot water, and then poured, and then the water is adjusted to a degree of adhesion which is not easy to be applied by the agglomerate.
Cylindrical lenses have at least one surface that is formed like a portion of a cylinder.Cylindrical lenses are used to correct astigmatism in the eye and in rangefinders, to produce astigmatism,stretching a point of light into a line.They are available in either plano-concave or plano-convex configurations. Plano-Concave Cylindrical lenses have a negative focal length and are used for image reduction or to spread light. Plano-Convex Cylindrical lenses have a positive focal length, which makes them ideal for collecting and focusing light for many imaging applications.
Some styles of cylindrical lenses have antireflective coatings to increase the transmission of light through the lens. Fused silica cylinder lenses are ideal for demanding laser machining and medical applications.
Plano-convex cylinder lens,Plano-Concave Cylinder Lens,Double-Convex Cylinder Lens,bi-concave cylinder lens,Meniscus Cylinder Lens, Rod Cylinder Lens ,Achromatic cylinder lens are available.
Specification of our cylinderical lens as follow:
*Material: BK7,Ge,UV-grade fuse silica(JGS1,JGS2,JGS3)or other optical materials
*Dimension Tolerance: +0.0 -- -0.1mm
*Center Thickness: +/-0.1mm
*Focal Length Tolerance: +/-1%
*Surface Quality:20/10
*Surface Figure: lambda/2 at 633nm on plano side
*Clear Aperture>90%
*Chamfer: 0.25mm at 45 degree typical
*Coating Optional
Double Convex Lens,Bi-Concave Irregular Cylindrical Lens,Double-Concave Cylindrical Lens,Dcv Cylindrical Lens
China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com