Why comprehensive prevention and control of super sweet corn pests and diseases?
Due to the high sugar content of super-sweet corn plants, they are vulnerable to more types and quantities of pests and pests, and often planted in stages, the disease and insect generation alternation phenomenon is very common, which brings certain difficulties to prevention and control. Therefore, only by implementing comprehensive prevention and control can we effectively control pests and diseases and reduce pollution and corn pesticide residues. I. Agricultural control 1. Select seeds to use full, uniform and disease-free seeds to ensure seedlings, seedlings, seedlings and reduce the time of pest damage. 2. Rotation should be avoided in continuous cropping. The former crops are preferably crops with distant genetic relationship with corn, such as melon beans and solanaceous fruits. The plots of rice crops with former crops must pay special attention to the control of sheath blight. 3. There are more rainfalls in South China since the start of planting, which facilitates irrigation and drainage, enhances soil permeability, facilitates root development, and reduces the chance of pathogen infestation. 4. Timely sowing According to the local climatic conditions and the law of occurrence of diseases and pests, appropriate sowing ahead or postponed, you can avoid or reduce the damage of pests and diseases. 5. Excessive application of nitrogen fertilizer during scientific fertilization growth, especially after jointing, will lead to decreased plant resistance and susceptible to sheath blight. Therefore, it is necessary to apply more organic fertilizer and increase phosphorus and potassium fertilizers to increase plant resistance and improve the quality of the ear. 6, the clean garden eradicate the weeds in the field and surrounding areas, timely detection and removal of diseased leaves, can reduce pests and the spread of the virus. Second, chemical trapping 1, poison bait trapped with 2.5 kg of peanut bran, sauteed and mixed with 90% trichlorfon crystals 50-75 grams, spray 0.5-1 kilograms, stirring while spraying. After being confined for half a day, it was spread to the fields in the evening, and it was able to trap and kill pests such as tigers and earthworms. 2, poisonous vegetable leaves before the emergence of sowing and killing sowing, will be chopped cabbage leaves 30-40 kg, with dipterex 1000-1500 times solution soak for a few minutes, in the evening to spread the field, can kill tigers and other pests. Third, manual killing Sooner or later, a field tiger has been found in the field. It is killed in the rhizosphere of the victim plant. There are green insects in the seedling stage to eat the leaves, and the leaves can be pressed to kill the insects. The armyworm and Spodoptera larvae damage the top of the fruit during the filling period. Can also be combined with artificial killing to reduce the damage. Fourth, biological control 1. Bacteria pest control bacteria Pesticide high-efficiency BT emulsion, 82612 emulsion, spray of 7216 powder 1000 times, has good control effect against lepidoptera pests such as cabbage caterpillar and Spodoptera litura. 2, virus treatment Cabbage larvae granules virus control of cabbage caterpillars, insecticide effect slow, but strong killing force, grasping the best effect in the application of younger age, with 12 grams per acre. 3, the use of Trichogramma beetle control Trichogramma is an egg parasitoid, the eggs produced in the eggs of pests, resulting in pests can not hatch so as to achieve the purpose of killing pests, in the spawning period of insect pests per acre 1.5 - 20,000 heads, a total of 2-3 times, there is a significant effect of killing eggs. CeshiguanjianziCeshiguanjianziCeshiguanjianziCeshiguanjianziCeshiguanjianziCeshiguanjianzi Ceshiguanjianzi Ganzhou Green days Biochemical Technology Co., Ltd. , https://www.tlqcjs.com