Good anti-cotton sowing date and pests and weeds
This year, affected by the abnormal climate, the sowing time of cotton in our province was postponed. Under this condition of continuous low temperature, the growth and development of cotton were delayed, and the damage degree of pests and diseases was relatively aggravated. For this reason, the pest control situation facing cotton this year is even more severe. From the beginning of sowing, we must firmly implement the key to each prevention and control technology, especially the selection of pharmaceutical technology. The main pest control technologies in the sowing and seedling stages are now introduced to the farmers as follows: I. Strictly controlling seed treatment during seeding time. Before seeding cotton, it is necessary to focus on the seed dressing and seed dressing measures to effectively control cotton seedling disease, seedling mites and underground pests. One must use insecticides and fungicides to mix and coat the seeds; the other is to prevent the white seeds from falling into the ground, soaking and seed dressing with chemicals: 1 seed sulphuric acid to remove fluff. 2 Pharmaceutical soaking can effectively control cotton blight, anthracnose, red rot, brown spot, black spot, and verticillium wilt and other diseases and seedlings and underground pests. The disease can be controlled by using a 40% carbendazim suspension to prepare a 0.3% solution of the active ingredient soaked at room temperature for 14 hours, remove and air dry, or use 2.5% of Clorox (fludioxonil) to suspend the seed coat. 300 milliliters of agent, add 1 to 2 kilograms of water, mixed with 100 kilograms of cotton seeds, or soak in warm soup, soak the seed in warm water of 55-60°C for 30 minutes before sowing, stir once every 5 minutes, and remove for seed dressing. The seedlings can be used to control the seedlings of water. Dispersion granules (70% imidacloprid) 0.5 kilograms, water 1.5 to 2 kilograms, mixed cotton 100 kilograms, or 40% methylisotriphosin 0.3 kilograms water 2 kilograms mixed cotton 100 kg, fully absorb and dry, while preventing and controlling underground pests. Second, do a good job 7 days before sowing herbicide sowing, Mu 40% trifluralin EC 75 ~ 150 ml, 30-40 kg of water sprayed on the soil surface immediately after the cross-mixed soil, to be mixed with the soil, or with 33 Percentage of pendimethalin 120 ~ 150 ml of water 30 ~ 40 kg, evenly sprayed on the surface of the soil before sowing, can effectively control annual grass weeds and some broad-leaved weeds, both labor-saving and labor-saving. Third, do a good job of prevention and control of plant diseases and insect pests 1. Disease prevention and control. It is sprayed with 50% carbendazim WP 500 to 800 times or 75% thiophanate-methyl WP 800 to 1000 times at the onset of blight, anthrax, damping-off, and red rot. Prevention, spray once every 7 days, depending on the condition of the general spray 2 to 3 times. 2. Pest control. 1 Locust control. When the rate of leaf rolling before the 4 true leaves of cotton seedlings reaches 3%, it is possible to use hydrazine water dispersible granules (70% imidacloprid) 5000 to 7000 times, or 10% imidacloprid wettable powder 2000 times or three consecutive blows (5% Acetamiprid) microemulsion or diclafen (5% Acetamiprid) WP 4000 times spray to prevent and treat. At the same time can be used with omethoate, chlorpyrifos and other organic phosphorus pesticide 1000 times a reasonable mix of use. Control agents should be alternately used for rotation. 2 cotton red spider control. Red spiders are mostly concentrated on the back of cotton leaves, sucking sap and causing mechanical damage to cotton tissue. At the same time, harmful substances are secreted to poison the leaf tissue. After the cotton leaves were damaged, chlorotic yellow spots appeared first, followed by local erythema. The erythema expanded and scorch, resembling a fire. Prevention and control should be appropriate "early" prevention and treatment, in the spot period can choose 5 points A (5% avermectin) 4500 times, or hit Yate (3% abamectin) 4000 times, good fight (2% avermectin) 3000 times spray control, can be mixed with omethoate EC or 1000 times liquid, such as elixir, to improve efficacy and reduce costs. 3 cotton blindness prevention and control. The provinces of cotton have mainly blind locusts, blind locusts, blind locusts, and blind locusts. The cotton vines are sucked by nymphs and nymphs, resulting in the shedding of bolls, the broken and broken branches of cotton plants. . The cotton fields that grow vigorously and have more buds occur more heavily. With the popularization of insect-resistant cotton in recent years, the reduction in the number of medications used in cotton fields and the occurrence of cotton blindness have become increasingly serious and have become major pests in cotton fields, occurring five times a year in our province. Before the wheat harvest, the cotton seedling stage in our province was a hazard period for the generation of blind stink bugs, and the budding time was the second generation of blind stink bugs. These two periods were the key links for prevention and control. A generation of prevention and control should be sprayed when there are about 100 cotton seedlings with about 3 nymphs, and the second generation control should be sprayed with about 10 out of 100 insects, and can use 5000 to 7000 times that of water dispersion granules (70% imidacloprid). Or 10% imidacloprid wettable powder 2000 times solution or triple blow (5% acetamiprid) microemulsion or diuretic (5% acetamiprid) wettable powder 4000 times solution and omethoate or chlorpyrifos 1000 times reasonable Mixed use. Can also be mixed with 4.5% beta-cypermethrin 1000 times liquid spray, or use prey (20% Marathon thiophanate) EC 1000 times spray. It is necessary to alternate use of multiple agents to increase the effective period and control effect. Hospital Abs I.V. Trolley,I.V.Trolley,Medical Artistic I.V. Trolley,2-Drawer I.V. Trolley Cart NANJING TIANAO MEDICAL INSTRUMENTS MANUFACTURE CO.,LTD. , https://www.tianaomedical.com