Pesticide is divided into categories, whether it is divided into ingredients, or it is distinguished from the method of use. Its range is very wide. In the face of so many pesticides, it is impossible to use every one of them. Only when we analyze the overall pesticides and grasp the key points, pesticides can play a good role. 19X7 Non-rotating SS Wire Rope The service life of the steel wire rope is proportional to the fatigue life. According to the approximate price of the steel wire rope market, the price of the manganese-based phosphating Coated Steel Wire Rope is about 1.4-1.6 times that of the smooth steel wire rope, and the service life extension is much higher than the price increase. Therefore, the average daily use cost of phosphating coated steel wire rope is only 30-45% of that of smooth steel wire rope, the use cost is lower, and the cost performance is higher.
Therefore, the phosphating coated steel wire rope has a long service life and a lower cost of use, and the smooth steel wire rope must be completely eliminated. This is the general trend and the development trend of steel wire rope manufacturing technology.
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1. The diagnosis should be exact. After plant diseases and insect pests occur, they must be carefully diagnosed. For those who are difficult to diagnose, they should consult with scientific and technical personnel or experts. Diagnosis is the basis of the right medicine, but also the key to improving the control effect.
2. Pesticides should be familiar. Familiar with the performance, characteristics, control objects and scope of use of the main varieties of pesticides, is the guarantee of correct use of drugs.
3. Medication should be symptomatic. All kinds of pesticides have a certain range of use and control objects. Only symptomatic can be economically effective; if it is not symptomatic, it will be difficult to test.
4. Spraying should be timely. There are many kinds of plant diseases, insects and grasses, and the conditions for spreading are different. The damage is late and early, and the degree of damage is light and heavy. Therefore, it is necessary to determine the appropriate period of control according to their law of occurrence and degree of damage. Pest control should be carried out at the peak of adult spawning or in the initial incubation period of larvae, because the larvae of the third instar are concentrated, small, and weak in resistance. Therefore, it is most appropriate to catch the egg hatching period until the larvae are sprayed before the third instar. Prevention and treatment of diseases should be best sprayed during the germination period of the spores, that is, before the onset and at the onset of the disease.
5. The amount of medicine should be appropriate. Too much or too little is not good. If there are too many drugs, phytotoxicity will occur, cost will increase, and waste will be generated. In particular, it will cause resistance to pests and diseases, which will cause difficulties in future prevention and treatment. If the medicine is too small, it will kill the pests and diseases, and it will work.
6. It is necessary to apply the medicine. There are many methods for the use of pesticides. According to the characteristics of the medicaments and the subjects to be treated, appropriate application methods should be adopted to achieve less medication, good control effect, long-lasting effect and less pollution.
7. Prevention should be appropriate. According to the characteristics of pests and diseases, it is efficient to master key prevention and treatment sites. For example, pests such as red spiders are mainly harmful to the back of the leaves, so the liquid spray can be sprayed on the back of the leaves to improve the control effect.
8. The drug should be appropriate. Spraying a drug generally can not control the pests and diseases, especially the disease , because the germs are very inconsistent, according to the situation, spray (sprinkle) once every 10 days, even spray 2 to 4 times. However, the hatching of insects is more concentrated, and it can be eliminated by spraying one or two times.
9. Mix well. For example, commonly used dimethoate , phoxim, enemy killing and other weakly acidic or neutral pesticides can not be mixed with alkaline pesticide stone sulphur mixture, otherwise it will decompose and fail. Alkaline pesticide stone sulphur mixture can not be mixed with Bordeaux mixture, otherwise it will produce excessive soluble copper, causing phytotoxicity. Pesticides such as calcium arsenate and stone sulphur containing calcium cannot be mixed with emulsion pesticides, otherwise stratification or precipitation may occur, which may reduce the efficacy. Chemical pesticides cannot be mixed with microbial pesticides.
10. It is good to be in the day. The efficacy of the drug is closely related to meteorological factors such as temperature, humidity, rain, dew and light. If you use emulsion pesticides, there will be no rain for at least the next 24 hours after application, and the effect will be good. The use of stomach poisons, contact pesticides, and at least two days without rain, can better play the drug.
