According to the analysis of the National Agricultural Technology Center and relevant experts, in 2015, the national corn pests and diseases were moderately biased, with an estimated area of ​​900 million mu. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Prevention and control target Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
The prevention and treatment rate of major pests and diseases of corn is over 90%, the overall control effect of pests and diseases is over 80%, the damage loss rate is controlled below 5%, and the specialized control and control area is over 20%. Further expand the green prevention and control demonstration and promotion area, and effectively reduce the use of chemical pesticides. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Prevention and Control Strategy Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Focusing on key pests and diseases in different ecological regions, with the core of ensuring corn production safety, the implementation of green prevention and control technology as the mainstay, biological prevention as the main body, environmentally friendly chemical and physical control as a comprehensive prevention and control strategy. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Prevention and Control Measures Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
(1) Different areas of prevention and control focus Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
The northern spring sowing corn area focuses on the prevention and control of corn borer, underground pests, corn dwarf disease, second and third generation armyworm, stem rot and large spot disease, taking into account the double spotted leaf beetle; Huanghuaihai summer sowing corn area key prevention and control of corn螟, cotton bollworm, second-generation armyworm, larvae, underground pests, thrips, stem rot and brown spot disease, Shandong, Henan, Jiangsu and other provinces take into account corn rough disease; southwest mountainous hills corn area key prevention Control corn borer, sheath blight, large spot disease and gray spot disease, taking into account second and third generation armyworms; key pest control and control of underground pests, corn borers, spider mites, double spotted leaf mites in Gansu, Gansu and Ningxia And large spot disease, Xinjiang focus on prevention and control of corn borer, three-point spotted spider mite, double spotted leaf beetle and so on. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
(II) Main pest control technology measures Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Underground pests (ground tigers, cockroaches, golden worms, stalked sunflower stalks, etc.) and corn dwarf diseases are treated with seeds such as thiamethoxam or imidacloprid, or coated with a coating agent containing the above ingredients, which can simultaneously cure the seedling stage. Horses, aphids (dwarf mosaic disease mediators) and Laodelphax sinensis (rough diseased mediators). Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
The corn stalks are returned to the field in autumn to reduce the number of insect source bases; the spring maize area is blocked by Beauveria bassiana 15 days before the wintering of the wintering, and the overwintering larvae are controlled and controlled; the overwintering adult worms use the attractant to trap and the peak of emergence The insecticide lamp is combined with the attractant to induce the killing; the adult eye is released at the initial stage of spawning. At the end of the heart leaf, spraying Bt preparation or chlorantraniliprole and other agents can be properly combined with the spraying of the vitamin A salt to improve the control effect and treat various other pests. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Corn stalk rot planted resistant varieties. The seed is treated with a seed coater such as a flavonoids, a fine nail cream, or a dressing agent such as difenoconazole or tebuconazole, and at the same time, silk smut, root rot, and the like are controlled. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Maize leaf spot diseases are selected from disease-resistant varieties and are reasonably densely planted. Appropriate topdressing to improve plant disease resistance. Pharmacy prevention and treatment advocates appropriate early-stage medication, generally at the end of corn heart leaf (brown spot disease in corn 8~10 leaf stage), the leaf surface can be sprayed with difenoconazole, diniconazole, pyraclostrobin and other agents. Depending on the incidence, spray 1~2 times every 7 to 10 days. In the northeast region, try to use a long-lasting drug. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Maize sheath blight is selected to be resistant to disease. In the early stage of the disease, it is better to spray Jinggangmycin and sclerotium on the stem-leaf sheath, or to spray diniconazole, mancozeb, etc., or to remove the base sheath sheath and combine the spraying effect. Depending on the incidence, spray 1~2 times every 7 to 10 days. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
The corn locusts were sprayed with imidacloprid, thiamethoxam, acetamiprid, pymetrozine and the like at the initial stage. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Corn leafhoppers are weeded in time to eliminate the habitat of early leafhoppers. When leaf spotting occurs, sprays with alkyne, scorpion, thiazolone, avermectin or other suitable mixing, and adding urea water, spreading agent, etc., can restore the leaves, Improve the effect of prevention. Focus on the back side of the middle and lower leaves of the corn during spraying. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Maize rough disease is selected from disease-resistant varieties. Avoid wheat and summer corn seeding; summer corn is suitable for late sowing, avoiding the poisonous period of the gray planthopper; corn 2 leaves 1 heart to 4 leaves 1 heart stage field spray imidacloprid, thiamethoxam and pymetrozine and other agents, Eliminate the disease of the crude disease, the poisonous media, and the treatment of thrips and other pests. In the use of nicosulfuron-methyl herbicides, avoid the use of organophosphorus pesticides to avoid phytotoxicity. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Specialized anti-government main push technology Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Straw returning to the field, deep ploughing of the land and cockroach technology before sowing. The use of straw smashing and returning to the field, deep ploughing of winter leisure fields and smear before sowing can help to improve soil fertility, destroy suitable sites for pests and diseases, and reduce the number of pests and diseases. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Seed treatment technology. Pesticide and fungicide are mixed in a reasonable mix, or the seeds are uniformly coated. Adopting technical unification, centralized contiguous, whole village promotion of chemical dressing or seed coating technology to improve the efficacy of pest control. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Beauveria bassiana seals and traps adult technology. In the northern spring maize area, before the corn mashing, the Beauveria bassiana is used to seal the cockroaches; in the emergence period of the adult cockroach, the light is used to trap and kill the adult worms, and the overwintering adult worms can be combined with attractants. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
Trichogramma prevention technology. In the early stage of spawning of the corn borer to the egg-bearing period, 3 to 6 release points per acre are set, and the Trichogramma is released 2 to 3 times in a unified manner, and the bee card or bee-keeping device is placed on the back of the middle blade. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
End-of-heart application techniques. At the end of the heart leaf, uniformly spray biological agents such as Bt or Beauveria bassiana to control corn pupa larvae; or mixed spray insecticides and fungicides (chlorinated benzamide + benzoyl azoxystrobin mixed spray) to effectively control the late leaves Spot disease treats pests such as corn borer and cotton bollworm. Promote the use of high-beam sprayers to improve the ability to work in the middle and late stages. Linyi Fertilizer Network Copyright
Linyi Fertilizer Network Copyright
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