Research and practice have proved that the use of chemical fertilizers or organic fertilizers to control pests and diseases of crops is not only economical, safe, and effective, but also can save pesticides. At the same time, it also has the characteristics of fertilizing and does not harm natural enemies, and does not pollute the environment. It is worth mentioning. It is worth it. Promote in production.
Nitrogen fertilizer 1 Ammonium hydrogencarbonate such as ammonium bicarbonate, ammonia, etc. has strong volatility and has certain irritating, corrosive and fumigating effects on pests, especially for insects with small size and weak endurance such as red spider, aphid, and thrips. it is good. Application method: spray evenly with 1% ammonium bicarbonate or 0.5% ammonia solution, spray once every 5-7 days, spray 2-3 times. 2Urea has the effect of destroying the chitin of insects. It is prepared by mixing urea, washing powder and water in a ratio of 4:1:400. It is used for locusts, cabbage worms, and other insects that damage cotton, vegetables and flowers. Red spider bead and other pests have good control effect. 3 When sporadic wheat rust occurs, spray with 50% fresh urine or 3% ammonium sulfate solution works well.
Phosphate Fertilizer 1 The oxalic acid secreted by the glandular hairs on cotton heads has attracted the cotton bollworm moth. In the adult stage of cotton bollworm, the 1-2% superphosphate leachate used as foliar spray fertilizer can make oxalic acid lose to calcium oxalate. Suspension to the bollworm. In this way, the amount of eggs laid in the cotton field can be reduced by 33.3-73.4%, with an average of 55%; the duration of each spray of phosphorus is generally 2-3 days. 2 Tomato umbilical rot is a physiological disease caused by plant calcium deficiency. From the initial flowering stage of tomato, 1% superphosphate leaching solution was sprayed once every half month, and sprayed 2-3 times. The disease prevention effect was obvious.
Potassium potassium fertilizer can enhance the resistance of crops, and application of potassium fertilizer has an inhibitory effect on a variety of crop diseases and insect pests. According to reports, 71% and 75% of the 740 fungal diseases and 68 bacterial diseases were reduced due to potassium, and 59% of the 230 species of insect pests were attenuated. In production, the most directly used potassium fertilizer for controlling crop diseases and pests is plant ash. Plant ash is a kind of high-quality potash fertilizer. It also contains phosphorus, calcium, magnesium, sulfur, and various nutrient elements such as boron, manganese, copper, zinc, molybdenum, etc.; it uses 10 kg of plant ash, watered with 50 kg, and is soaked for 24 hours and filtered. The filtrate spray can effectively kill the aphids on the crops; in the cotton seedling stage, 20-25 kg per acre of grass ash, and spread along the ridge, can increase the temperature, reduce the occurrence of cotton blight, anthrax, red rot, etc. Before planting onions, garlic, or leeks, 20 kg of plant ash per acre is applied to the bottom of the ditch, or 15 kg of plant ash per acre is sown in onions, garlic, alfalfa and other vegetables. It can significantly reduce the damage caused by root pods and increase the yield of vegetables by 15-20%. In the early occurrence of wheat sheath blight, 30-40 kg of plant ash per acre is used. When the dew is not dried in the morning, Shun ridge is withdrawn at the base of the wheat plant. Controlling the spread of diseases has a certain effect; for root-rot diseased fruit trees, roots are first dug, the root canals of the disease are scraped off, and slightly dried. Each plant is then buried with 2.5-5 kg ​​of plant ash. After about 1-2 months, the disease is The tree can issue new roots.
After silicon-calcium fertilizer is applied to the silicon-calcium fertilizer crop, most of the silicon is accumulated in the epidermal cells of the crop, forming a very hard epidermis layer.
Steel Wheelchair: mainly include the wheelchair frame, wheel, brake and other devices constitute
Scope of application:
Lower limb disability, hemiplegia, paraplegia below the chest and mobility of the elderly.
Features:
The patient can operate the fixed armrest or detachable hand rail
Fixed foot pedal or removable foot pedal
Go out to carry or not carry when you can fold
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Hebei Orient Imp. & Exp. Co. Ltd. , https://www.orientmedcare.com