Simple identification of pesticide pesticide damage and solutions
Crop injury is caused by inappropriate use of pesticides, causing crops to respond to various pathological conditions. 1. Crop injury can be divided into the following categories according to different symptoms: (1) Spots. It is mainly found on the leaves of crops and sometimes on the stems or fruit epidermis. There are several kinds of brown spots, yellow spots, and dead spots. (2) Huang Hua. In the plant stems and leaves, there are more leaves. (3) Malformation. This phytotoxicity may occur in various organs of the plant. Common deformities include leaf curling, clumping, root swelling, malformed ear, and deformed fruit. (4) Withered. This kind of phytotoxicity is generally performed on the entire plant. This phytotoxicity is mostly caused by improper use of herbicides. (5) Production stagnation. The slow growth caused by phytotoxicity is compared with the stiffness of physiological diseases. The former tends to have drug spots or other symptoms of phytotoxicity. 2. Reasons for the occurrence of phytotoxicity: From the point of view of the phytotoxicity of crops for many years, the main causes of phytotoxicity are the following: First, wrong pesticides are used. The second is that the concentration is too high, or the concentration is correct and the application is repeated during the operation. The third is to apply the medicine when the temperature is high, humidity is high, and sunshine is strong. The fourth is to apply pesticides at the sensitive stage of crop production. Fifth, inappropriate use of pharmaceutical agents. Sixth, pesticide formulations and processing quality are also related to drug injury. 3. Remedy measures for phytotoxicity: When it is found that the crops in Shifentian have typical symptoms such as yellowing of leaves, spotting of stems and leaves, stagnation of growth, wilting of plants, malformation, etc., the causes of phytotoxicity must be analyzed in order to adopt appropriate remedies. Measures. The commonly used remedies are: (1) spray a large amount of water to wash or slightly alkaline water, repeatedly spraying fresh water 2 to 3 times, try to wash off the drugs on the surface of the plant, and increase the application of phosphorus and potassium fertilizer. (2) Topdressing quick-effect fertilizer. In crops where phytotoxicity occurs, fertilizers such as urea are quickly topped up to increase nutrients and to enhance the growth of crops. (3) Spraying drugs to relieve injury. If crops are harmed by pesticides such as omethoate, parathion, etc., 0.2% borax solution can be sprayed on the affected crops; rapeseed, peanuts, etc. are inhibited by paclobutrazol, and erythrocyte acid solution can be sprayed appropriately. (4) Remove the more serious parts of the injury. This measure is commonly used in fruit trees. 4. Measures to avoid and reduce pesticide damage to crops: (1) Correct use of pesticides. (2) When taking drugs, it is necessary to look at the sky, see the land, see the seedlings, avoid adverse weather, sensitive crop varieties and growth period. (3) Scientifically apply different pesticides. First, it must be used strictly in accordance with the prescribed scope and dose, and it must not be expanded and increased in concentration. Second, one-time uniform application of drugs to avoid repeated drug use. Third, we must not mix pesticides in order to avoid exacerbating drug injury. Fourth, when applying herbicides, especially broad-spectrum herbicides, wind direction should be observed and windshields should be installed on the sprinklers to avoid harming crops in adjacent plots. Fifth, care should be taken to avoid the use of pesticides that have residual phytotoxicity on the crop.
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ETR oxygen generator can produce medical level oxygen with 93%±3% purity and 4bar pressure. The oxygen production capacity for single oxygen generator is 3-100Nm3/h.
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