In order to prevent and reduce the damage caused by drug injury, scientific drugs should be used first, and the drug should be observed in a timely manner. If symptoms of drug injury appear, the following technical measures should be taken as soon as possible to remedy:
Suspend the use of similar drugs and use as little as possible. Before the phytotoxicity is completely removed, the use of similar drugs that cause phytotoxicity should be suspended, and non-similar drugs should be used as little as possible to avoid the increase in phytotoxicity.
Rinse with water. Most pesticides are generally not resistant to water scouring. If you find that the application concentration is too large and you are beginning to experience symptoms of phytotoxicity, you should quickly use a clean sprayer to fill in fresh water and fight enough gas. The pesticides on the front and back are washed clean. For some pesticides that are susceptible to decomposition and failure due to alkaline substances, 0.2% lime water or 0.2% sodium carbonate solution can be used to wash the damaged parts at night. The effect is very good.
Spray potassium permanganate dilution. Potassium permanganate is a strong oxidant and has an oxidative decomposition effect on most chemical pesticides. Potassium permanganate was diluted 6,000 times in water and then loaded into a sprayer. The fruit trees were sprayed evenly and thoroughly on the phytotoxic parts of the tree, which effectively relieved the phytotoxicity.
Strengthen water and fertilizer management. According to the growing season of fruit trees and the demand for fertilizers, a quick-release fertilizer should be topdressed in time, and the application amount should be appropriately increased. Combined with top-dressing watering, to promote the use of water to promote fat. In addition to the application of quick-impact fertilizer in the soil, it is also necessary to apply foliar fertilizer, spraying 0.2% to 0.3% of potassium dihydrogen phosphate solution or 0.3% to 0.5% of urea solution. The spraying time should be performed before 10:00 AM and after 4:00 PM after the dew has dried, so that the front and back sides of the blade are evenly stained with fertilizer solution. After spraying for 7 to 8 days, it can be sprayed once again. After top dressing, watering can promote acceptance. Damaged fruit trees resume growth and development as soon as possible.
Strengthen cultivator loose soil. The cultivator can break the soil compaction, improve the permeability of the soil, increase the ground temperature, promote beneficial microbial activities, accelerate the decomposition of soil nutrients, enhance the ability of the root system to absorb nutrients and water, promote the growth and development of fruit trees, and relieve the phytotoxicity in the soil. The cultivator depth should be determined based on the fruit growing season and soil moisture content. After the watering, timely cultivating loose soil and increasing the frequency of cultivating the cultivator should be done first. The cultivator should be shallow and deep first to prevent excessive rooting.
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