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Second, the pursuit of quick-acting fertilizer. According to the general topdressing amount in the crop growing season, combined with watering and topdressing quick-acting fertilizer, in addition to the application of ammonium nitrate and ammonium sulfate to the soil, and spraying 1% urea or 0.3% potassium dihydrogen sulfate solution on the foliage, it can promote crop growth. Improve the ability to resist phytotoxicity and reduce the damage caused by phytotoxicity.
Third, strengthen the cultivating loose soil. According to the crop growing season, the number of cultivating loose soil is appropriately increased. The cultivating should be from shallow to deep, breaking the soil compaction, enhancing the soil permeability, increasing the ground temperature, promoting beneficial microbial activities, accelerating the decomposition of soil nutrients, enhancing the absorption capacity of roots for nutrients and water, and allowing the plants to resume growth and development as soon as possible. 1998 survey: Cotton fields damaged by acetochlor after being unearthed from cotton seedlings, continuous cultivating 4 times, higher than the height of 1.8 °C in the seedling stage 0 jujube 10 cm, and 1.7 pieces per plant, the plant height is 3.3 cm. .
4. Spray plant growth regulators. Use 15 ml of “plant power 2003†per acre, dilute 1000 times with water or 5 ml with “sprayâ€, add 5000 times with diluted water, or dilute 500 times with “green wind 95†plus water, use a sprayer The dilution is evenly sprayed on the front and back surfaces of the crop leaves, so that the leaves are covered with water droplets. After spraying, it can receive the effect of lifting and lifting, so that the crop can quickly resume growth, and the drug is neutralized and neutralized by the opposite nature of the drug. If wheat is sprayed with 2,4-D butyl ester in excess, 20 ppm of gibberellin can be sprayed, and the growth of stems and leaves returns to normal after 7 days of spraying, which is more than 10% higher than that of unsprayed gibberellin.
Four methods of remedy for the use of herbicides
First, rinse with water. When the crop is sprayed with excessive herbicide or adjacent to the sensitive leaves of the crop, clean water can be filled with a clean sprayer and sprayed several times in a row to remove or reduce the residual amount of herbicide on the crop. For some herbicides that are easily dispersed and dissipated by alkaline substances, 0.2% of the quicklime 0.2% sodium carbonate water dilution solution can be used to spray the crops, which has a very good effect on eliminating phytotoxicity. For the field where the phytotoxicity is contiguous, in addition to the foliar spray cleaning, it should also be filled with sufficient water to promote the root water absorption, reduce the drug concentration in the crop, and play a good mitigation role. For the field where the soil is applied excessively, the method of filling and draining the field should be adopted, and a large amount of drugs should be excluded from the field, which can effectively alleviate the phytotoxicity.
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