1. Sub-regional prevention and control focus
(1) Cotton area of ​​the Yellow River Basin: including Hebei, Shandong, Henan, Tianjin, Shanxi and Shaanxi cotton areas. Focus on prevention and control of cotton blind mites, cotton aphid, cotton leaf mites, cotton bollworm, prevention of blight, yellow wilt, seedling disease, bell disease, red leaf stem blight, local underground pests (è¼è›„, 蛴螬, golden worm, land Tiger), cotton aphid, weevil, bacterial angular spot.
(1) Cotton area of ​​the Yangtze River Basin: including Jiangsu, Anhui, Hubei, Jiangxi and Hunan cotton areas. Focus on cotton blind mites, cotton leaf mites, cotton bollworm, Spodoptera litura, Fusarium wilt, Verticillium wilt, prevention of seedling disease, bell disease, red leaf stem blight, pay attention to control cotton aphid, red bollworm, cotton scorpion , white smoke.
(1) Northwest inland cotton area: including Xinjiang and Gansu cotton areas. Focus on the prevention and control of cotton leafhopper, cotton aphid, cotton bollworm, cotton scorpion horse, cotton blind cockroach, whitefly, wilt, verticillium, seedling disease, red leaf stem blight.
2. Main technical measures
(1) Seedling prevention targets are seedling disease, blight, yellow wilt, nursery, cotton leafhopper, cotton blind mites, cotton carp, underground pests, etc.
Use anti-(resistant) pests and varieties and coated cotton seeds to do seed treatment. Choose sheltered from the wind, the terrain is high, and the drainage is convenient for the field to be a seedbed. The soil is fertile, no wilt, verticillium and other soils are used to make seedlings, and the disease-free seedlings are cultivated. The recurrent area of ​​the verticillium wilt in the northwestern inland cotton region is 60 cm deep. Remove weeds in the cotton fields and in the fields, and reduce the number of insects.
(2) Seedling prevention and control objects are seedling disease, wilt disease, verticillium wilt, nursery, cotton leafhopper, cotton blind mites, cotton carp, underground pests and so on. After the harvest of wheat and rapeseed, the stalks are postponed for 2 to 3 days, so that the natural enemies can be fully transferred to the cotton plants for beneficial control.
In the case of seedling disease before or at the beginning of the disease, timely prevention and control, in case of low temperature and rain, timely spraying of Bacillus subtilis, polyclonal antibiotics, carbendazim and other agents to control the occurrence and development.
The cotton area in the Yangtze River Basin of Miaoyu is dominated by natural natural enemies; the rate of direct-flying cotton leaf leaves in the Yellow River Basin and the Northwest Inland Cotton Area is 5%~10% before 3 true leaves, or 10% after 4 true leaves. 20%, timely drug prevention.
On the basis of clearing the weeds in and around the cotton field, the cotton leaf 螨 Yellow River Basin and the Northwest Inland cotton area, when the rate of sorghum in the field is less than 15%, the center strain is selected. When more than 15%, the whole field is uniformly controlled.
Cotton blind mites in the Yangtze River Valley cotton area cotton seedlings are transplanted before the transplanting. When the amount of nymphs in the field reaches 3, the chemical control is carried out.
The ground tiger uses sugar wine vinegar to trap adult worms and lower the base. The crystal trichlorfon is used to prepare the poisonous soil or the poison bait and the ridges are used to induce the larvae.
Fusarium wilt, Verticillium wilt in the Yellow River Basin and the Yangtze River Basin cotton area, dredge the “three ditch†(circle, Henggou, and box ditch), increase the application of decomposed organic fertilizer and biological fertilizer, rationally increase the application of phosphorus and potassium fertilizer, and supplement the micro-fertilizer The nitrogen fertilizer can be used as a top dressing for ammonium bicarbonate. Before the onset or at the beginning of the disease, the drug is administered continuously for 2~3 times at intervals of 10 days. The foliar spray and the spray irrigation root are combined, and the rotation is used.
(3) The control targets in the bud stage are cotton blind mites, cotton bollworm, cotton leaf mites, wilt disease, verticillium wilt, and red leaf stem blight.
Timely pruning, cultivating and weeding; when the rain is heavy, pay attention to clearing the ditch and draining the soil, reduce the soil moisture, and control the long-term application of meperidine according to the growth of the cotton plant.
Cotton blinds in the Yellow River Basin and the Yangtze River Basin cotton area, focusing on prevention of early onset, weeds and cotton fields adjacent to jujube and woods. Insect attractants are used to trap the adult mites. When the amount of 100 insects reaches 5, the chemical control should be carried out. The application time should be applied inward by the field edge before 9:00 am or after 4 pm. The northwestern inland cotton re-emergence area was combined with the control of cotton locusts and cotton aphids in early June.
Helicoverpa armigera is non-insect-resistant cotton and early-developed cotton field. In the adult stage of cotton bollworm, a sexual attractant is used to support the dry moth trap, or a bio-inducing agent is used to trap the adult; when the cotton bollworm has 100 young larvae, the timely control is carried out. It is preferred to use biological insecticides such as Helicoverpa armigera nuclear polyhedrosis virus, Brassica californica nuclear polyhedrosis virus, Bacillus thuringiensis (Bt., insect-resistant cotton field banned), and indoxacarb.
When cotton spots in cotton leaves occur and there is an expansion trend, special acaricides are used to control the damage.
Fusarium wilt, Verticillium wilt in the Yellow River Basin and the Yangtze River Basin cotton area before or after the onset of disease, timely medication to control the occurrence and expansion of the disease.
The red leaf stem blight is sprayed with potassium fertilizer after the bud, and the boron fertilizer and zinc fertilizer are sprayed according to the soil nutrient condition to prevent and control the disease.
(4) The control objects in the flower and bell stage are Fuxi, cotton leafhopper, cotton bollworm, cotton blind mites, Spodoptera litura, B. tabaci, and bell disease.
In case of bell disease, go to the empty branch, hit the old leaves, remove the rotten bells and the eggs of the Spodoptera litura and take them out of the field to improve the ventilation and light transmission conditions, reduce the humidity and canopy in the field, and reduce the number of pests in the field. At the same time, it should be avoided to apply more and more late nitrogen fertilizer to prevent greed. In the area where the bell disease is common, the flower buds and the young bells are the main focus of spraying, and the medicine is sprayed before or after the onset of illness. Pre-rain prevention, timely spraying after the rain to control the occurrence and development of bell disease.
Helicoverpa armigera uses sex attractants and bio-feeding agents to trap adult worms and reduce the amount of eggs in the field. When the flower bud period is 10 insect-resistant cotton, 100 young larvae, and 100 non-anti-insect cotton, the number of eggs is 100, and the drug is controlled.
When the density of insects such as Fuxi, cotton leafhopper, cotton blind, and Spodoptera litura reaches the control index, it is preferred to use biological sources, low toxicity, and environmentally friendly agents, and pay attention to the rotation of the drug during the bud period. Pharmacy control index, Fuxi: The average amount of sputum in the middle and lower 3 leaves of a single plant is 200-300 heads, and the whole plant is evenly sprayed; Spodoptera litura: 200 eggs in two plants, which are picked before the second instar larvae are dispersed; cotton leaf mites: Picking occurs when the film is taken, and the whole field is controlled when the film is taken; cotton blind cockroaches: 10 insects.
Second, the professionalization of the main control technology
1. Clean the pastoral and autumn tillage techniques. After the cotton is harvested, remove the cotton stalks and clean the fields in time to remove the pests and diseases. The autumn ploughing is deep, and the conditional cotton area is watered and protected in autumn and winter, which lowers the wintering base of pests and diseases.
2. Select anti-(tolerant) pest-tolerant varieties to control the varieties with resistance to Fusarium wilt and Verticillium wilt. In the Yellow River Basin and the Yangtze River Basin, on the basis of selecting resistant varieties, select high-quality varieties of insect-resistant cotton.
3. Seed treatment technology According to the main pests and diseases of seedlings in each cotton area, the seeds are treated with suitable insecticides, fungicides or special seed coating agents.
4 Bio-source pesticides and natural enemy protection and utilization technology
(1) Protection and utilization of natural enemies. In the early stage of cotton growth, it is necessary to protect and utilize the natural enemies of cotton fields and give full play to the control of natural enemies. After the wheat and rapeseed are harvested, the straw is placed in the field for 2 to 3 days, which is beneficial to the transfer of natural enemies such as ladybugs to the cotton field. In the nursery period, when the natural enemy units in the cotton field (with 1 head of seven-spotted ladybug, 2 spiders, 2 lions, 4 scorpion flies, 120 scorpions, 1 natural enemy unit) and aphid population ratio, the Yellow River When the cotton area in the basin is higher than 1:120, the cotton area in the Yangtze River Basin is higher than 1:320, and the northwest inland cotton area is higher than 1:150, no pesticide control is used, and natural aborigines are used to control the aphids. In the cotton region of the Yangtze River Basin, no chemical pesticides were used to control the nursery in the general seedling stage to the bud stage.
(2) The biological source pesticides of Helicoverpa armigera eggs were sprayed with Helicoverpa armigera nuclear polyhedrosis virus, Brassica californica nuclear polyhedrosis virus, Bt., etc.; Spodoptera litura eggs were sprayed at the beginning of Spodoptera litura nuclear polyhedrosis virus It not only has good control effect, but also effectively protects natural enemies; uses cucurbitine to control cotton aphid and cotton bollworm; prevents seedling disease, blight, and verticillium wilt, and is treated with Bacillus subtilis, amino oligosaccharide, and allicin Seed, seedling and flower bud period with water drip application or foliar spray; prevention of bell disease, fungal bell disease using multi-antimycin spray, bacterial use of allicin and other control.
(4) artificial release of Trichogramma, cotton bollworm, adults, artificial release of egg parasitic wasp, Trichogramma or Trichogramma, each time 10000 head / acre, each generation of bees 2 to 3 times, interval 3 ~ 5 days, reduce the amount of cotton bollworm larvae.
5. Insect pheromone traps the insects of the cotton bollworm, the wintering adult, from the beginning of the adult to the end of the adult, the large area contiguous use of cotton bollworm sex attractant, one dry moth trap and lure per acre; Yangtze River basin cotton area In the perennial area of ​​Spodoptera litura, large-area contiguous use of Spodoptera litura sex attractant, set a Noctuidae trap and lure per acre, clustering and trapping adults, reducing the amount of eggs in the field. The contiguous application of the bio-feeding attractant is carried out in the form of strips 1 to 2 days before the main pests of the Noctuidae (H. bollworm, the ground tiger, the clover, the clover, etc.), every 50 to 80 meters in 1 Evenly applying the top leaf of the cotton plant can induce adult worms.
6. Ecological regulation and biodiversity. Crops of alfalfa or early-maturing rapeseed under the field ridges and forest belts around the cotton fields in the northwestern inland cotton region, attracting, cultivating and conserving natural enemies, and enhancing the control ability of natural enemies on cotton aphid, cotton bollworm and cotton leafhopper. The cotton bollworm often develops areas, and the cotton fields interplant corn and ramie strips to trap adult cotton bollworms to lay eggs and concentrate on killing. Implement cotton and winter wheat flower arrangement to protect and use natural enemies.
7. Rational drug use technology
(1) For the control of aphids and cotton blind mites, matrine, nitenpyram, thiamethoxam, etc. can be used; for cotton blind mites, flunicarbamide can be used.
(2) Control of Helicoverpa armigera, Spodoptera exigua, etc., mainly using Helicoverpa armigera nuclear polyhedrosis virus, Brassica californica nuclear polyhedrosis virus, Bt., indoxacarb, spinosad, etc.; insect growth regulation The agent may be selected from the use of chlorfenapyr, sputum sputum, etc.; the chemical agent may be selected from emamectin benzoate or cyanamide.
(3) For the control of cotton leafhoppers, use biological insecticides such as avermectin; chemical agents may be used with etoxazole.
(4) Prevention and control of Fusarium wilt and Verticillium wilt can be selected from Bacillus subtilis, allicin, amino oligosaccharide, etc.; chemical agents can be used with ciprofloxacin acetate.
(5) In the early stage of the prevention and treatment of fungal bell disease (bell spot on the bell), you can use multi-antimycin, allicin, chemical agents can choose siminamine acetate, pyraclostrobin, etc. Bacterial bell disease may be selected from pyrimidine nucleoside antibiotics, allicin, mesomycin, and the like.
(6) The pesticide dressing insecticide may be selected from the treatment of imidacloprid or thiamethoxam seed treatment; the bactericide and growth regulator may be selected from Bacillus subtilis, amino oligosaccharide, erythritol, brassica, brassinolide , difenoconazole, fluke nitrile, and the like. Mixing insecticides with fungicides can control a variety of pests and diseases at the seedling stage.
(7) Miao disease (anthrax, blight, stagnation, red rot) In the early stage of the disease or early onset, prevention and treatment, the use of complex state manganese Zn, pyraclostrobin, carbendazim and other agents .
This article URL: 2018 cotton major pest control technology program
ETR skid-mounted Oxygen Generator system is a complete onsite system which can produce oxygen from the air directly and fill cylinders, all the components are installed together.
For this system, the installation and commissioning shall be finished in factory in advance, delivery to customer as a turn-key project. Plug in and operation, no need for additional jobs, easy for the customers.
Oxygen Generator, PSA Oxygen Generator, Oxygen Plant, Containerized Oxygen Generator , Skid-Mounted Oxygen Generator
Hunan Eter Medical Co., Ltd. , https://www.eter-tech.com