First, the application of base fertilizer
The main variety of zinc fertilizer is zinc sulfate. When used as base fertilizer, it is generally used 1-2kg per acre, mixed with organic fertilizer or physiological acid fertilizer evenly. Note that zinc fertilizer should not be mixed with phosphate fertilizer, because phosphorus and zinc are mutually antagonistic, and mixed application will reduce their respective fertilizer effects. Zinc fertilizer has a post-effect effect, and it does not need to be applied every year. It can be applied once every 2-3 years.
Second, for seed fertilizer application
Zinc fertilizer is used as seed dressing for seed dressing, soaking and rooting. The seed dressing is usually 2-3g of zinc sulfate per kg of seed, first dissolved with a small amount of water, then sprayed on the seed, while spraying and mixing, water consumption It is advisable to mix the seeds well and dry them to be sown. Soaking seeds generally use a concentration of 0.02%-0.05% zinc sulphate solution, soak the selected seeds into a good solution of zinc sulphate for 8-10 hours, remove and dry to sown. Alfalfa root is a cost-effective and effective method of increasing yield. When transplanting vegetables, the roots are planted in a 1% zinc oxide suspension.
Third, for topdressing application
Topdressing can apply zinc fertilizer directly to the soil, or dilute the zinc fertilizer for foliar application. Soil topdressing generally uses 1-2kg of zinc sulfate per acre, preferably concentrated application, and its application or hole is applied near the root system to facilitate root absorption and improve the utilization rate of zinc fertilizer. Spraying is a commonly used method of topdressing, which can be applied to all classes of vegetable growth and development. Especially when the vegetables are exposed to zinc deficiency symptoms, the zinc deficiency can be rapidly transformed. The spray is generally used with 0.05%-0.1% zinc sulfate solution, and the 0.1% dilution solution is sprayed three times during the whole growth period. the best. Tomatoes should be sprayed once after fruit setting and early fruit picking; cucumbers should be sprayed once in the seedling stage, after the root melon is sitting and in the early harvesting stage; the Chinese cabbage should be sprayed once in the seedling stage, the rosette stage and the early stage of the ball. It is best to spray after 4 pm, especially in the evening, and spray the whole plant evenly.
Common types and uses of pliers
Pliers have many functions and are used in many industries. The pliers used in different industries are also different. Generally, the more commonly used pliers are:
1. Wire stripper
Wire strippers are commonly used tools for internal electricians, motor repairs, and instrumentation electricians. They are composed of knife edges, crimping ports and clamp handles. They are mainly used for stripping plastic and rubber insulated wires and cable core wires.
2. Wire cutters
Also called a vise, it is a kind of clamp and cutting tool. It is composed of jaws, tooth edges, knife edges, guillotines and pliers handles. It is mostly used to pick up nails or break nails and iron wires.
3. Nozzle pliers
It can be divided into electrical and electronic categories. It is mainly used for cutting injection molding machine products, plastic products, and injection nozzles. It is also suitable for cutting metal products and electronic component pins.
4. Needle-nose pliers
Also known as trimmers, pointed pliers, and pointed pliers. They are composed of pointed tips, knife edges and pliers handles. They are generally made of 45# steel. They are used to cut single and multi-strand wires with thinner diameters and to give orders. Stranded wire joint bending, stripping of plastic insulation layer, etc., can be operated in a relatively small working space.
5. Curved nose pliers
Also called elbow pliers, its function is similar to that of needle-nose pliers without cutting edge, and it is suitable for use in narrow or recessed working spaces.
6. Flat nose pliers
It is a commonly used tool for assembly of metal parts and telecommunications engineering. It is generally used to bend metal sheets and metal filaments to make them into the required shape. In repair work, they are used to install and pull out pins, springs, etc.
7. Diagonal pliers
Mainly used to cut metal wires, flat-nose diagonal pliers are suitable for use in recessed working spaces.
8. Top cutting pliers
End-cutting pliers are similar to diagonal pliers. They are mainly used for cutting steel wires with the cutting edge at the top.
9. Water Pump pliers
The function is similar to a pipe wrench, but it is lighter, smaller and easier to use than a pipe wrench. However, the clamping force is not as good as a pipe wrench. Generally, it is only suitable for household non-professional emergency or simple installation of water pipes.
10. Slip joint pliers
The shape resembles a carp. The opening width of the jaws has two adjustment positions, which can be enlarged or reduced. It is mainly used to clamp round parts. It can also replace small nuts and small bolts with a wrench. It is often used in the auto repair industry.
11. Circlip pliers
Commonly known as circlip pliers, it is a special tool used to install inner and outer circlips, and can also be used to remove circlips. .
12. Vigorous pliers
It is mainly used for clamping parts for riveting, welding, grinding, etc. It can also be used as a wrench. Its characteristic is that the jaws can be locked and generate a large clamping force to prevent the clamped parts from loosening.
Wire Stripper,Needle-Nose Pliers,Wire Cutters,Curved Nose Pliers
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