The application of pesticides should be scientific, especially the application of biological pesticides in greenhouse vegetables in winter. Otherwise, not only will it not achieve the control effect, but it will also be susceptible to phytotoxicity. Therefore, the application of pesticides should pay attention to the ten taboos.
Do not use live water to prepare pesticides. Because there are many impurities in the living water, it is easy to block the nozzle of the sprayer with its preparation, and it will also damage the suspension of the liquid to produce accumulation.
Second, avoid using well water to prepare pesticides because well water contains more minerals, especially calcium and magnesium. These minerals are prone to chemical action when mixed with the drug solution, and the accumulation of the drug is reduced.
Three taboos increase the amount of water and increase the concentration of pesticides. Spraying only a small amount of pesticide on the crop is not enough to kill the pest, and some pesticides may even fail completely. Excessive addition of water can also cause the loss of pesticides and lead to environmental pollution. Therefore, in the preparation of pesticides, it is necessary to comply with the field of their use concentration, majestic control of water addition.
Four bogey to increase the amount of pesticides pesticides must be subjected to a majestic field efficacy test before being approved for production and sales. After that, the actual use data such as the amount of drug used, the time of administration, and the number of times of application are determined. Therefore, adhering to the dosage prescribed in the instruction manual can achieve the control effect, and increasing the dosage not only increases the input, but also causes phytotoxicity of crops, increases the residual amount of pesticides in agricultural products, and aggravates environmental pollution.
Five bogey irrational pesticides mixed with some pesticides can increase the control effect, reduce the amount of medication, or achieve the effect of both pests and diseases, and mixed application is more labor-saving. However, some pesticides cannot be mixed and applied. For example, most of the organophosphorus pesticides encounter alkaline pesticides or alkaline media and will quickly decompose and fail. When you need to mix pesticides, you must understand the nature and characteristics of various pesticides, and find out whether they can be mixed. It is best to ask the relevant technicians for advice and then mix them.
Six bogey casual use of obsolete pesticides must be used within the shelf life, otherwise it will cause loss.
In the flowering period, the seven bogey sprays the flowering period of the pesticide crops, the tissue is young, the resistance to stress is weak, and it is prone to phytotoxicity. Therefore, it is necessary to avoid the flowering period when spraying.
Eight bogey pesticides are usually sprayed before the crops are harvested. The period of high-efficiency and highly toxic pesticides is about 60 days, and the period of high-efficiency and low-toxic pesticides is about 15 days. Therefore, whether it is food, vegetables, fruit trees, it is necessary to stop the application of pesticides before harvesting, so as to avoid food poisoning.
Jiubai abuse of pesticides should be based on the variety of crops, control objects and the performance of the pesticides to take the corresponding pesticides, China's pesticide network recommended to do the right medicine, while avoiding the long-term use of a certain agent.
Shear Beam Load Cells are widely used where operators need to measure compressive forces. The core component of a shear beam load cell is a spring element. This element is a piece of metal that is elastically deformed under load and recovers the moment the load is removed.
The (single-ended) shear beam is designed for low profile scale and process applications. The shear beam capacities are from 100kg to 50t. One end of the shear beam contains the mounting holes while the opposite end is where the cell is loaded. The load cell should be mounted on a flat smooth surface with high-strength hardened bolts. The larger shear beam cells have more than two mounting holes to accommodate extra bolts to keep the hardware from stretching under stress load.
Shear beams are available of nickel-plated alloy steel or stainless steel for use in harsh environments.Load Cell Central,Shear Beam Load Cells,Larger Shear Beam Cells,Load Cell Measure Compressive Forces
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