First, the election site preparation
In spring corn cultivation in my county, summer soybeans were used as the mouthwash, and in winter, the fields were plowed twice and kept warm.
Second, fertilization site preparation
Before planting, Mushi farmyard fertilizer is over 3,000 kilograms, superphosphate 50 kilograms, potassium sulfate 20 kilograms, and zinc fertilizer 2 kilograms. Or Mushi Shiwo slowly controlled release fertilizer 40 kg. After fertilization, rotary ploughing will deeply bury the fertilizer in the soil, and then carry out the protection.
Third, timely early broadcast
Spring corn sowing in my county is mostly carried out in the middle of April. Generally stable at 10 cm soil temperature through 12 °C for the appropriate sowing period.
Fourth, sowing method
Use wide and narrow rows for sowing. Use manual or broadcast. In recent years, there has been an increase in the area of ​​sowing and sowing of large-scale tillage machines. Narrow line 50 centimeters, width 66 centimeters, hole spacing 28.5 centimeters, about 4000 strains per mu.
V. Field Management and Topdressing
The first cultivating, weeding, seedlings, and seedlings were carried out in the 3-4 leaf stage of maize. Appropriate air-drying can promote the deep roots of maize, and enhance the lodging resistance and drought resistance of maize. During the jointing stage of maize, we combine weeding and weeding for topdressing and applying 15 kg of urea. In the maize trumpet period, a combination of cultivating and weeding was carried out for the second time, and 35 kg of urea was applied. If sowing time with Wolff slow-controlled release fertilizer base fertilizer can not top-dressing.
VI. Pest Control
The main diseases of corn are large and small spotted corn. The main pests are corn borer, cotton bollworm and armyworm, which should be controlled in time.
Seven, timely harvest
When the corn glutinous leaves turn yellow, the leaf color becomes light, and the grains become hard and shiny, they are timely harvested. The early and late harvest of corn has a great influence on the yield and quality. The highest grain weight is the most suitable harvest period during the ripening period of corn. The sign of the ripening stage is that the grain milk line (grouting line) disappears and the ear drops down. After harvesting, the ear is framed or air-dried to prevent rain and damp from causing moldy growth of the grain. After the moisture content falls below 14%, threshing is stored or sold.
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