Pesticides and fertilizers use provincial medicine workers

Urea preparation

Urea is not only a commonly used high-quality chemical fertilizer but also has a certain insecticidal effect.

(1) Urea and detergent powder preparation: 0.5-0.7 kg of urea per acre, 125 g of neutral detergent, and 50-60 kg of fresh water are dissolved and then sprayed on the foliage. It can prevent many insect pests such as locusts, red spiders and cabbage caterpillars on many crops such as grain, cotton, vegetables and fruit trees. Spray once every 7-8 days, spray 3 times continuously, the control effect can reach 95%. At the same time, it also has a top dressing effect, which can increase the yield of crops by more than 10%.

(B) Urea and dichlorvos: Use 80% dichlorvos per acre 25 ml, urea 0.5 kg, add 50 kg of water and mix well, then spray on the leaves, chewing vegetables, fruit trees, grains, cotton, tea, flowers and other crops The pests of the mouthparts and sucking mouthparts have a powerful quick-killing effect. The control effect on aphids, red spiders, cabbage caterpillars, bridge insects, whitefly, and peach bugs was as high as 95%. Control once every 6-7 days, continuous control 3 times, can receive 50% of pesticides, but also make the crop increase by about 10%. Dichlorvos can't be used because they have phytotoxicity to sorghum; they are sensitive to melons and beans and should be used with caution.

(3) Urea and Dimethoate preparations: 40% Dimethoate EC 50 ml, urea 0.5 kg, and water 60 kg per acre. After mixing, foliar spray can be applied to prevent vegetables, fruit trees, flowers, grains, cotton and other crops. The larvae, thrips, leaf miners and other pests on the effect of good, and a significant increase in production.

Vinegar and fruit preparation

Vinegar is rich in nutrients, mixing ordinary vinegar, 40% dimethoate, and water in a 1:1:1500 ratio. Spraying 50-60 kilograms per acre foliar spray can control aphids, red spiders, thrips, leaf miners, wheat leaf bees and other pests on crops such as grain, cotton, vegetables, fruit trees, and tobacco. About 95%. Compared with the use of dimethoate pesticides alone, it can save more than 30% of the drug and increase the insecticidal effect by 20% to 30%. Due to the vinegar can soften the insect body wall, enhance the penetration of liquid medicine, thereby improving the control effect; the same time, vinegar contains a variety of nutrients, as well as a significant increase in production.

Tobacco preparation

Nicotine is contained in tobacco as a pesticidal ingredient. Nicotine is a fast-acting insecticide and has a wide range of insecticides. Nicotine is contained in the leaves and stems of tobacco, which is the highest in leaves.

(1) Tobacco lime water: 0.5 kg of tobacco leaves or 2 kg of stems shall be chopped, boiled for 10 minutes after adding 10 kg of water, remove the residue, and then add lime water (0.5 kg of quick lime added to 5 kg of water), The filtrate was then added to 30 kg of water and prepared. The amount of 50-60 kilograms per mu can be used as a substitute for pesticides to prevent aphids, leaf fleas, whiteflies, cabbage caterpillars, thrips, leaf curlers and other pests on crops such as vegetables, fruit trees, tea, and cotton.

(2) Tobacco soap and water: Dissolve 50-60 grams of soap with hot water, add the above-mentioned tobacco water, and then add 10 kg of fresh water to mix evenly. Spray the same amount of the above pests and have the same control effect.

Phosphate dilution

According to the spawning of cotton bollworm, the oxalic acid secreted by the cotton plant can attract the egg to lay eggs and the fear of phosphorus that it escapes when phosphorus is encountered. During the spawning period of H. armigera, 2% of superphosphate calcium fertilizer solution or 300-400 times of potassium dihydrogen phosphate fertilizer solution was used to remove the residues, and sprayed on the top of the cotton plants, spraying 50-60 kg per acre. To spray 8-10 lines per spray, leave 4 lines not to spray, drive the cotton bollworm to lay eggs on the unsprayed cotton plants, and then spray eggs with liquid drugs such as water-killing eggs and insecticides with good efficacy. Strain, can receive a multiplier effect.

The use of the above-mentioned preparations can effectively prevent and treat pests and diseases, and has a fertilizing effect. It is truly "one arrow, double-edged" to prevent pests and fertilization once completed, which can save a lot of labor. These preparations must be used with the preparation, do not store. Sprays should be selected from 4 pm to late in the evening without strong winds; spraying should be thorough and thorough, so that the whole plant is evenly fluidized. It is necessary to strictly use the range, amount, and concentration in order to avoid phytotoxicity or damage and ensure good results.

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