The pests in the middle and later stages of corn mainly include sheath blight, ear rot, and corn borer (ringworm). After the corn was killed, it not only reduced the yield and quality, but also caused the plants to die prematurely. Its comprehensive prevention and control technology is as follows:
(I) After controlling the harvest of the pathogenic insect-derived corn, timely collection of diseased plants, stubble leaves, and fruit failure (panicle) shall be carried out to burn and destroy the intermediate host and overwintering sites of the pest.
(2) Do a good job in fitness cultivation to open the field "three channels" in advance to facilitate the irrigation and drainage of corn in each growth period; close and close planting to improve the ecological environment of the maize; scientific fertilization to enhance the disease resistance of corn.
(III) Chemical control When the large bell-mouth period of corn (heart stage), use 5% Jinggangmycin wettable powder 200 grams per acre and 20-25 kilograms of sterile fine soil, apply it to the heart leaves, not only It has high efficiency, low cost, long effective period, simple and easy implementation, and has no residue on human and livestock safety, and has no adverse impact on natural enemies. The application of Jinggangmycin to the heart of the leaves was 1: 85.8% for Rhizoctonia solani, and 12.4% higher than the equivalent spray (73.4%), and 80.7% for the same amount of spray. Also higher than 5.1% until corn maturation control efficacy against sheath blight is still 71.2%-86.6%; the effect of simultaneous treatment of corn ear rot is 85.3%. This is due to the concentration of drugs in the soil of the drug-sweeping people's corn horn, which will not result in loss, which will help the plants to absorb slowly; Since at least 20% of the liquid is lost during the spraying process, it cannot be completely absorbed by the corn plants, so the effect is poor. If mixed fungicides (such as rice bran net) and insecticides (such as dichlorvos and carrageenan, etc.) are mixed in the medicinal soil, then a variety of diseases and insect pests can be treated in one go. In the middle and late stages of ear filling, the borers will drill into the ear and bite the grain. Each han can use 5% of dichlorvos emulsifiable concentrate 0.8 kg, spray 10 kg water, or apply cotton buds to the top of the ear and filaments. Can also receive the same control effect.
(I) After controlling the harvest of the pathogenic insect-derived corn, timely collection of diseased plants, stubble leaves, and fruit failure (panicle) shall be carried out to burn and destroy the intermediate host and overwintering sites of the pest.
(2) Do a good job in fitness cultivation to open the field "three channels" in advance to facilitate the irrigation and drainage of corn in each growth period; close and close planting to improve the ecological environment of the maize; scientific fertilization to enhance the disease resistance of corn.
(III) Chemical control When the large bell-mouth period of corn (heart stage), use 5% Jinggangmycin wettable powder 200 grams per acre and 20-25 kilograms of sterile fine soil, apply it to the heart leaves, not only It has high efficiency, low cost, long effective period, simple and easy implementation, and has no residue on human and livestock safety, and has no adverse impact on natural enemies. The application of Jinggangmycin to the heart of the leaves was 1: 85.8% for Rhizoctonia solani, and 12.4% higher than the equivalent spray (73.4%), and 80.7% for the same amount of spray. Also higher than 5.1% until corn maturation control efficacy against sheath blight is still 71.2%-86.6%; the effect of simultaneous treatment of corn ear rot is 85.3%. This is due to the concentration of drugs in the soil of the drug-sweeping people's corn horn, which will not result in loss, which will help the plants to absorb slowly; Since at least 20% of the liquid is lost during the spraying process, it cannot be completely absorbed by the corn plants, so the effect is poor. If mixed fungicides (such as rice bran net) and insecticides (such as dichlorvos and carrageenan, etc.) are mixed in the medicinal soil, then a variety of diseases and insect pests can be treated in one go. In the middle and late stages of ear filling, the borers will drill into the ear and bite the grain. Each han can use 5% of dichlorvos emulsifiable concentrate 0.8 kg, spray 10 kg water, or apply cotton buds to the top of the ear and filaments. Can also receive the same control effect.
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