Foliar fertilizer application skills
There are many types of foliar fertilizers on the market, which are of different forms. If used properly in production, it will promote crop growth, otherwise it will cause losses. Correct use of foliar fertilizer should be done:
1. The concentration should be reasonable: different foliar fertilizers have different concentrations, not the higher the concentration, the better. If the concentration of foliar fertilizer containing growth regulator is appropriate, it will promote the growth of crops, but the concentration will be too high to inhibit the growth of crops; the foliar fertilizer containing nutrients will be burned when the concentration is too high.
2, the period of use should be appropriate: different crops, different growth stages, the use of foliar fertilizer is not the same. Some foliar fertilizers are suitable for spraying in the early stage of fertility, some are suitable for spraying in the late growth stage, and some are sprayed before and after. From the results of most tests, the effect of spraying in the first and middle stages is better than that in the later stage.
3, spraying time should be scientific: spraying foliar fertilizer should pay attention to weather, temperature and humidity, should try to make the fertilizer liquid for a long time attached to the leaf surface for the crop to fully absorb. Should choose to be in the windless weather, the sun is weak, the temperature is low, spray, generally before 9 am, after 4 pm, the evaporation of water is weakened, which is conducive to crop absorption. When the air humidity is high, the foliar fertilizer is not easy to dry after the spray, and the crop is well absorbed, but do not spray before the rain, so as not to be washed away by the rain after spraying.
Other Constructions SS Wire Rope
Wire rope quality judgment:
1. Specific gravity. The diameter of the wire rope is the same, the heavier the specific gravity, the better the quality of the wire rope.
2. Steel wire rope core. The stronger the core of the wire rope, the heavier the specific gravity, the better the support for the outer strand of the wire rope, and the better the quality of the wire rope.
3. Materials. The material is the steel grade and strength. The higher the steel grade, the better the quality of the wire rope with higher strength.
4. After the rope is cut, the slightly loose quality is good, and the quality of the wire rope with a relatively long lay length is better than that with a short lay length.
5. The anti-corrosion ability of 316 Stainless Steel Wire Rope is stronger than that of 306 stainless steel wire rope, and the anti-corrosion ability of 306 is stronger than that of hot-dip galvanized steel wire rope. The quality of hot-dip galvanized steel wire rope is better than that of electro-galvanized steel wire rope; the quality of nylon plastic-Coated Steel Wire Rope is stronger than that of PE plastic-coated steel wire rope.
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