The sowing time of plastic film-bonded corn is generally about 7- 10 days earlier than that of local conventional open-field corn. 1, Plot: Choose a plot with flat terrain and deep and fertile soil layer. 2. Nutrients: 2.5-3kg of pure nitrogen, 0.8- 1.2kg of phosphorus pentoxide and 2. 1-2.5kg of potassium oxide are needed to produce 100kg of corn. 3. Sowing: 90cm wide row, 45cm narrow row and 40cm pond spacing.

1. What month is the plastic film-bonded corn planted?

1, planting time of plastic film-bonded corn

(1) The sowing time of plastic film-bonded corn is about 7- 10 days earlier than that of local conventional open-field corn.

(2) The planting time of corn in the open field depends on the specific area. Like Shandong, it is usually planted around April every year; In Hebei, it is usually planted in the middle of July every year; Northeast China is generally planted in the middle of April every year; In the southern region, it is usually planted around March every year.

2, planting matters needing attention

(1) Plot requirements: Choose a plot with flat terrain, deep and fertile soil layer and good irrigation and drainage performance for planting.

(2) Nutrient requirements: 2.5-3kg of pure nitrogen, 0.8- 1.2kg of phosphorus pentoxide and 2. 1-2.5kg of potassium oxide are required for producing 100kg of corn.

(3) Fertilization: 4-5 cubic meters of decomposed high-quality organic fertilizer, all phosphorus and potassium fertilizers and 60-70% nitrogen fertilizer are applied to each mu of land, and 3-5kg zinc sulfate is applied to each mu of land in case of zinc deficiency; Topdressing 15kg urea per mu when 6-9 leaves are used; At the big bell mouth stage, 20kg urea was topdressing per mu.

(4) Sowing: the row width is 90cm, the row width is 45cm, the pond spacing is 40cm, and 2-3 seeds are sown in each hole, and the sowing depth is about 3-5cm.

Second, the best sowing time of plastic film corn

1, the best time to put seedlings

Generally, when the seedling emergence is about 50%, the film is broken and the seedlings are released in batches, and the specific time is 7- 10 days after sowing. When the seedlings are found to touch the plastic film, the film is broken and the seedlings are released.

2. Precautions for seedling release

(1) It is best to release seedlings on cloudy days. If it is sunny, it should avoid high temperature at noon or when it is windy and cool down. It is better to release seedlings before 10 in the morning or after 4 pm on a calm sunny day.

(2) Generally, it is appropriate to choose a plastic film with a width of about 80cm and a thickness of about 0.008 mm..