Jiangmen Dilin Lighting High-Tech Co., Ltd. , https://www.dilinlight.com
First, the tigers of the tigers are the pests of the winter sweet corn seedlings, mainly the earth tigers, the small tigers, and the yellow tigers. Such pests damage the leaflets or young leaves of sweet corn, and even bite the young stems of the seedlings, causing lack of seedlings and ridges, which seriously affects the whole seedlings. Control measures: 1 manual capture. In the early morning, around the sweet corn seedlings or along the damaged plants remaining in the hole, the soil is opened to catch the larvae. 2 poison bait traps. 50 grams of 90% trichlorfon crystals per mu, dissolved in warm water into 250 ml of liquid medicine, mixed with sauteed peanut gluten, and sprinkled around the corn in the evening.
Second, the locusts that harm sweet corn in Taiwan and Datun are mainly Datun and Taiwanese. The larvae feed on the heart, affecting photosynthesis, hindering growth, feeding on stems, and easily folding winds; feeding on male and female ears, reducing the rate of pollination, and directly feeding on the grains. Control measures: Apply at the big bell mouth. The medicinal agent can be selected from 3% Miller granules (1 kg per mu) or 98% Bataan WP (50 g per mu) or 90% trichlorfon crystals (150 g per mu, diluted with warm water) Sand dessert leaves are spread.
3. Corn glutinous corn mash occurs mainly during the tasseling stage of winter sweet corn, mainly affecting male flowers and affecting pollination. The locusts are small and breed fast, so they cannot be paralyzed. Control measures: spray with 3000 times of imidacloprid or 1500 times of propanil.
4. Corn spot disease, small spot disease, large spot disease and small spot disease are two diseases commonly occurring in winter sweet corn. When it occurs seriously, it can kill the leaves and cause a reduction in production. Mainly harmful to the leaves, can also infect the leaf sheath and temporal lobe. The two diseases are prone to prevalence at the booting and heading stage, low-lying land, too densely shaded, and continuous cropping, often with heavy onset. Control measures: 1 Remove the yellow leaves and diseased leaves in the lower part of the plant to reduce the source of re-infected bacteria to facilitate ventilation and light transmission. 2 spraying the bactericide, the agent can be selected: 25% Bibo emulsifiable concentrate 2500 times or 50% carbendazim emulsifiable concentrate 500 times or 65% daikon zinc WP 1000 times.
5. Sheath blight is a serious disease of winter sweet corn. Initially on the ground, the incidence of 1-2 leaf sheaths was mainly caused by the leaves, ears and grains of the milky stage. Soil stickiness, partial application of nitrogen fertilizer, low-lying terrain and plant closure, non-ventilation, poor light transmission are favorable for the disease. Control measures: 1 Improve cultivation management techniques. Pay attention to the drainage of the ditch and apply the decomposed organic fertilizer. The application of nitrogen fertilizer should be sooner rather than later, and should be less or less. Appropriate application of potassium fertilizer should be carried out to improve the disease resistance of plants. 2 chemical control. Optional 25% Bishop's cream 3000 times or 70% methyl thiophanate WP 800 times or 40% Codanine suspension 500 times spray.
Winter sweet corn pest control
In recent years, winter sweet corn has been planted in mountainous areas, but pests and diseases have seriously threatened the production of sweet corn, which has become a major obstacle to the increase of sweet corn. The winter planting of sweet corn provides abundant food for some pests, and becomes the main wintering breeding place for pests. It also provides favorable conditions for some pathogens, and the disease can spread and spread. In addition, winter sweet corn is affected by the weather of the early dry and late rain, often causing serious occurrence of pests and diseases.
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