With the spring, the shadow of the frozen is not far away. This is an excellent opportunity. Now the pests are still in the recovery stage, the resistance is not strong, the fruit trees are just taking out the sprouts, the insects have nowhere to hide, and the pesticides are used in time. Give the fruit tree a "washing bath" to thoroughly solve the pest problem in the early days. Stainless steel nuts are components that tightly connect mechanical equipment, and can only be connected by screws on the inside, nuts and screws of the same specification. For example, M4-0.7 nuts can only be combined with M4-0.7 screws. (In the nut, M4 means the inner diameter of the nut is about 4mm, and 0.7 means the distance between the two threads is 0.7mm. );
Although many people may have used this stainless steel round nut, they do not really realize the importance and advantages of this nut. According to the introduction of the article, you should be able to understand what kind of characteristics this nut has. When a nut needs to be used in the future, it should be considered that such a nut plays a more important role.
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First, the prevention and control before flowering 1, timely spraying a Bamei 5 degree stone sulfur mixture, can control the rot disease, inhibit the wintering breeding eggs of red spider, have obvious effects on the control of leaf curlers and scale insects. It can also spray 40% Fumei arsenic 100 times solution.
2. Prevention and treatment after germination. The orchard sprays 150-200 times of a 45% crystal sulphur mixture or a spray of 0.3 degree stone sulphur mixture plus 50% of 1605 emulsifiable concentrate 1000 times. It can kill more than 90% of red spiders and powdery spores such as powdery mildew and deciduous diseases that are overwintering in buds, and can also control chafers and aphids.
3. Prevention and control after germination and before flowering. Spray 1500 times 50% of 1605 or 80% dichlorvos 1200-1500 times liquid, enemy killing and pyrethroid pesticide 2500~3000 times liquid. It has obvious control effects on pests and rot.
Second, after the flower control 1, after the flower can continue to use 0.3-0.5 Baume degree stone sulfur mixture to control leaf disease and red spider. It can also spray 2500-3000 times of effort and eliminate sweeping, which can prevent and control red spiders and kill eggs of leaf-feeding insects and heartworms.
2, 10:10 days after flowering can spray 1:4:20 Bordeaux mixture (ie 1 kg of copper sulfate, 4 kg of quicklime, 20 kg of water) or spray 40% carbendazim, detoxification 600-800 times solution, Prevention of defoliation, anthracnose and brown hull disease that are prone to rainy and high temperatures.
3. It is strictly forbidden to use thiamine and dichlorvos within 1 month after flowering.
The same is true for products made in the United States. For example, a 1/4-20 nut can only be combined with a 1/4-20 screw. (A 1/4 finger nut has an inner diameter of about 0.25" and 20 fingers have 20 teeth per inch. Features of Stainless Steel Round Nuts
Stainless steel nuts have the advantages of not easy to rust, anti-corrosion, thermal conductivity, and strong electrical conductivity. Another major use is injection, where it is embedded in plastic parts after heating, or injected directly from a mold.
