From sowing to harvest, corn will suffer from different diseases and insect pests in each growth stage. After several years of experiments, our corn field plan has been improved continuously.
At present, a high-yield plant protection plan has been formed, which integrates seed dressing, weeding, insecticidal and sterilization.
(1) main control object:
corn borer (endangering the heart leaves of seedlings)
Conifer (endangering the main root 3-5cm below the corn seedling soil)
(2) solutions:
Seed dressing before sowing is a better control measure. The specific use method is to mix 100 kg corn seeds with 200-300 g of 70% thiamethoxam water dispersible granule, and then dry them before sowing. It can effectively control root rot and underground pests, and it can also prevent Spodoptera exigua and thrips in the early stage. It has obvious effect of strong seedling.
(1) main control objects:
Closed weeding before emergence of weeds.
In addition, with the promotion of wheat straw returning measures, corn borer, golden needle worm, thrips and Spodoptera are more and more harmful, often resulting in the lack of seedlings and ridging of corn. In addition to the influence of field humidity, the main living place of Spodoptera exigua is under the wheat straw and stubble, and the corn with heavy damage is also close to the wheat straw and stubble.
2) solutions:
After sowing, herbicides can use acetochlor or metolachlor as soil sealing treatment before emergence of weeds, which is basically harmless to corn.
For pest control, the main measure should be to clear the surplus wheat grass or plough in the field, to create an environment that is not conducive to the life of Noctuidae Noctuidae; for heavy fields, thiamethoxam or fipronil can be sprayed along the base of corn line in the evening, which has a good control effect on tigers, planthoppers and thrips.
(1) main control objects:
Closed weeding before emergence of weeds.
In addition, with the promotion of wheat straw returning measures, corn borer, golden needle worm, thrips and Spodoptera are more and more harmful, often resulting in the lack of seedlings and ridging of corn. In addition to the influence of field humidity, the main living place of Spodoptera exigua is under the wheat straw and stubble, and the corn with heavy damage is also close to the wheat straw and stubble.
2) solutions:
After sowing, herbicides can use acetochlor or metolachlor as soil sealing treatment before emergence of weeds, which is basically harmless to corn.
For pest control, the main measure should be to clear the surplus wheat grass or plough in the field, to create an environment that is not conducive to the life of Noctuidae Noctuidae; for heavy fields, thiamethoxam or fipronil can be sprayed along the base of corn line in the evening, which has a good control effect on tigers, planthoppers and thrips.