1. Buy safe pesticides. When purchasing pesticides, you should go to a reputable regular agricultural material store to buy, and do "four do not buy", that is, no pesticide label or label is not complete, do not buy, label "three certificates" (pesticide registration certificate, product standards No., production license) Incompletely marked, do not buy, the appearance quality is not qualified, do not buy, do not buy more than the product quality guarantee period.
2. Reasonable selection of pesticides. In summer, there is a lot of rain. When using pesticides, we must pay attention to the use of pesticides with strong systemic properties. Such as dimethoate, omethoate, monocrotophos, methamidophos, phosphonamine, insecticidal mites, leaf chlorpyrifos, indigo, carbendazim, carbendazim, thiophanate, triadimefon, ethylphosphorus aluminum, nail cream Anthracite, tricyclazole, and fluconazole, etc., can be rapidly transmitted to various parts of the plant after being absorbed by the stems and leaves of the crop, and its efficacy is less affected by rainfall; 1605, methyl 1605, trichlorfon, anti- Congo, quetiapine, chlorfenapyr, fenvalerate, green lactate, and dexamethasone, although not having systemic conduction, have strong penetrability and erosion resistance on the surface of the crop, and are therefore suitable Apply during the rainy season. It has been reported that when applied to crops for 2 hours, Ye Kuling can produce systemic conduction; after application of phosphonamine, it can quickly enter the interior of the plant. About 50% of the dose enters plant tissue 1 hour after application; After half an hour and 1 hour after the tricyclic azole spray, it had no effect on the efficacy. Second, we must pay attention to the use of quick-acting pesticides with strong knockdown. Such as phoxim, dichlorvos, omethoate, anti-èšœå¨, 速çå¨, æ··å¨, ç多å¨, 广克å¨, æ–°çå¨, 棉铃å®, ç铃çµ, æ–°å…‰1å· and pyrethroid pesticides Wait. After the application of such pesticides, the prevention and control of pests and diseases can be quickly exerted, thereby avoiding or reducing the leaching of the medicament by rainwater. According to some data, the aphids on the crops can be killed in a few minutes after the application of the anti-Suiwei; the rice pests are controlled by the mixed-killing, and most of the pests fall into the water a few minutes after the application.
3. Properly apply pesticides. When applying pesticides, you should pay attention to six: 1 symptomatic medicine. There are many varieties of pesticides and different characteristics. The most suitable pesticides should be selected for the control objects. 2 timely medication. If the protective fungicide must be used before or during the onset of the disease, the herbicide should be used before the crop is germinated. 3 appropriate amount of medication. The application of pesticides must be strictly in accordance with the recommended dosage, and it is easy to increase or decrease the crop phytotoxicity or affect the control effect. 4 apply evenly. The application should be even and thorough, and it should not be re-sprayed or leaked to ensure the safety of crops and is effective against pests and diseases. 5 reasonable mix. After mixing, the toxicity to humans and animals should not be increased, chemical changes should not occur between the active ingredients, and the cost of medication should not be increased. 6 safe application. Dispensing and applying drugs should prevent pesticides from contaminating the skin. It is forbidden to spray high-toxic pesticides during high temperature in the summer, and the application time should not be too long. At the operation site, it is necessary to keep the liquid medicine, poisonous valley, poisonous species, etc., to prevent poisoning of humans and animals; highly toxic and highly toxic pesticides are prohibited from being used on crops such as melons and vegetables.
4. Problems occur in a timely manner. For pesticides with poor control effect or large-scale phytotoxicity, the remaining pesticides should be promptly sent to the pesticide testing unit for inspection. If they are unqualified or fake products, they should promptly go to the relevant departments of industry and commerce, consumer association, quality and technical supervision, etc.; When the drug is harmed improperly, the remedial measures should be taken in time; the pesticide application personnel will be poisoned by pesticides and sent to the regular hospital for rescue.
According to the attributes of nuts, there are national standard (GB) , German standard (Din) , international standard (ISO) , Japanese Standard (Jis) , American Standard (Astm/ansi) and other standards. Among them, GB, DGB and JGB are denoted by M (for example, M8, M16) , while the American and British systems are denoted by fractions or # (for example, 8 # , 10 # , 1/4,3/8) . Sentence is too long, please supply a shorter sentence
Nut Material: Carbon Steel, stainless steel, copper, alloy, etc
Stainless steel hexagon nuts (GB6170/DIN934) , thin nuts (GB6172/DIN439) , heavy nuts (metric and us) , nylon lock nuts (Din 985-din 982 thick) , all-metal lock nuts (din 980m) , cap nuts (din 1587) , flange nut (GB6177/DIN6923) , flange nut nylon lock nut (DIN6926) , four-corner welding nut (DIN928) , hexagon welding nut (Din929) , butterfly cap (GB62, Din315, US) , k cap and so on. Specification: M1.6-M64
Nut Specification nut specification table is specific and detailed to unify all kinds of nuts, with the table to some of the nuts out of the specifications. There are many types of nuts, there are different materials of nuts. Each kind of nut has the different specification, each kind of screw also has it to have the mechanical performance and the function.
Dome Nuts,Ss Nut Bolt,Metal Nut,Stainless Steel Bolts And Nuts
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