How is summer corn sown? What should I pay attention to?

How to sow summer corn? What should I pay attention to? Please instruct summer sowing corn to be prepared as follows: first, seed treatment. Excellent varieties were selected: grain and feed type Nongda 108, Nongda 86, Nongda 95, grain corn Zhengdan 958, Jingzao 13, Jidan 26, silage special corn Keduo 4, Keqing 1, Bei silage 1, etc. First-and second-class seeds are used for seed screening and classification, which need to be dried, coated or mixed before sowing. Second, the previous stubble treatment and soil preparation and fertilization. The straw of the former stubble wheat should be crushed and sprinkled evenly, without the phenomenon of heap, and the height of stubble is not more than 25 cm. When sowing, the soil moisture should be sufficient, and the soil water content should not be less than 16%. Summer corn is generally sown with iron stubble, and 15 kg / mu of corn special fertilizer is randomly ditched during sowing. Third, sow seeds. The sowing rate should be determined according to the requirements of seed size, field germination rate and variety characteristics of maize. The retained seedling density of silage corn is 4500mi 4800 plants and the flat type 4300m 4500 plants. 4500 plants of compact corn for seed use and 4500 plants of flattening type of corn. Sowing deep sandy land 5m 5cm, loam land 3m 5cm. Fourth, chemical weeding and middle and late stage management. Before sowing, you can use 1000 ml of glyphosate to 60 kg of water or 20% paraquat to 10 kg of water. 40% atrazine emulsion 75 g plus 85% Acetochlor EC 50 g to 40 kg of water can be used for soil treatment before emergence after sowing. Corn growth into the big trumpet mouth stage, pay attention to the control of large and small spot, brown spot, sheath blight, corn growth in the middle and later stage, Trichogramma and phoxim granules to control corn borer and armyworm. In the big trumpet mouth period combined with the topdressing application of urea 25ml / mu 30kg. Fifth, harvest at the right time. Silage corn was harvested at 20ml 30 days after silking, with high yield and good quality, while seed corn was harvested when the ear was fully ripe and did not die. Click to get more corn planting techniques click to get more food crop planting techniques