The cultivation of sweet corn mulching film not only has the advantages of heat preservation, water saving, fertilizer retention, and weed growth inhibition, but also helps to plant early and shorten the time for the market of green barley, so as to achieve the purpose of improving economic efficiency.
First, selection of improved varieties for high yield and quality should be based on good varieties with good comprehensive characteristics, wide adaptability, lodging resistance, and strong growth potential.

Second, fine soil preparation, adequate basal corn film mulching should be selected flat land, deep loose soil, fertility of the higher land cultivation. Fertilizer is mainly based on basal fertilizer, and the amount of fertilizer should be sufficient. This will not only prevent the growth of maize plants in the early stage, but also ensure the demand for nutrients in the late stage of plant growth. Generally per acre Shiren farmyard fertilizer 1500-2000 kilograms, superphosphate 25 kilograms, compound fertilizer 20-25 kilograms as base fertilizer, and then deep-flip (deep plowing about 30 centimeters), site preparation, and picking up.

After leveling the land, the width of the surface is 1.3 meters (including the ditch) and the height of the clam is 20-25 cm.

Third, sowing cover film corn mulching cultivation can be compared with open ground cultivation 10-15 days earlier. Choose seedless, non-invasive, plump seeds for sowing, with double rows per row, spacing 50-60 cm, plant spacing 25-30 cm, sowing 2-3 capsules per hole and then filling the holes. After sowing conditional chemical herbicides such as butachlor can be sprayed evenly on the surface, and then the plastic film can be laid flat on the ground, covered with fine soil around it, so as to achieve the effect of heat preservation, fertilizer conservation, and weed control.

Fourth, field management

1. Put the seedling film in time: When the first leaf of the seedling is developed, put a 5-7 cm square hole in the plastic film at the seedling to put the seedling film, and then seal the film mouth with fine soil. .

2, timely check seedlings to fill the gap: after the seedlings, seedlings should be checked in a timely manner to fill the gap, find the lack of seedlings, seedlings can be used in advance nursery bags or seedlings nursery bags to ensure that seedling growth consistent.

3, appropriate time seedlings Dingmiao: Corn cultivation should stay single seedlings. Marrowlings should be early, can be carried out in the 3-leaf period, leaving 2 seedlings per hole. Dingling can be carried out in the 5-leaf stage, and the method of weakening and retaining the strength of the seedlings should be adopted, leaving 1 seedling per hole.

4, top dressing: The focus is to top-dressing panicle fertilizer, can be broken between the rows top dressing, after fertilization will be covered with fine soil membrane. At the same time, the ear can be used to apply fertilizer when silking, and it is best to use extra-root fertilizer to apply fertilizer. Each time, use 0.2% potassium dihydrogen phosphate to spray the leaves and spray 2-3 times successively.

5. Drought-proof drainage: Corn film cultivation, in the event of drought, can be drained from the sewer irrigation after the ramming of the soil, and rainy weather should clear the drainage ditch in time to exclude waterlogging. Maize heading and flowering are most sensitive to water requirements, and field capacity should be maintained at 70%-80% to achieve high yields.

6. Pest control: Focus on the prevention and control of corn borer, aphids and leaf spot. Prevention of corn borer, can be used in the large bell mouth with 3% Mi Leer 750-1000 grams of mixed soil sprinkled in the heart of the leaves, the head can be used 800-1000 times the dichlorvos droplet irrigation silk; locust 40% available dimethoate 1000 Double liquid spray control; large spot and blight can be controlled by 90% mancozeb 1000 times spray. It is prohibited to use pesticides with long residual effect such as Bataan and Dimethoate after heading, so as to ensure the quality and food safety of the green oysters.

5. Timely harvesting and recovery of residual film sweet corn should be harvested 20-25 days after pollination. Normal corn can be harvested at the ripening stage where the temporal lobe turns white and the grain hardens. After corn is harvested, it is necessary to recover the remaining film in time to reduce the impact on the crops and environment in the later seasons.

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