First, select seeds. Before sowing, spread the corn seeds for two days, then remove the small grains, glutinous grains, broken grains, and moldy grains, which is the basis for cultivating strong seedlings.
Second, single-grain species. Single-checking can avoid the seedlings from competing for fertilizer, and the roots in the seedlings will help to cultivate the seedlings. If the live broadcast, the amount of 2 kg per mu is suitable, and the seedlings and seedlings are released after emergence.
Third, leave 4,000 seedlings per acre. Retention method: 1, line spacing 50 × m × plant spacing 30 cm; 2, line spacing 60 cm × plant spacing 25 cm; 3, line spacing 60 cm × plant spacing 20 cm.
Fourth, skillfully apply fertilizer. 2 kg of urea per acre and 2 kg of diammonium are mixed. When ordering, 1 gram per hole. If the live broadcast, one person catches the seed and one person grabs the fertilizer.
Fifth, early and strong seedlings. After the seedlings (5-leaf stage) combined with cultivating cockroaches, pineapple seedlings, chasing strong seedlings, 50 kg of ammonium bicarbonate per acre.
Sixth, heavy application of strong fertilizer. During the big bell period, 8O kg of ammonium bicarbonate, 10 kg of diammonium and 10 kg of potassium fertilizer are applied per mu.
Seven, prevention of pests and diseases. Late in the big bell mouth, pay attention to observe the insect situation and timely control the heartworm. 1 kg of carbofuran granules per acre, 3 kg of fine soil, 1 gram per plant, sprinkled into the heart leaves. At the time of heading, control the aphids and spray 1000 times of omethoate.
Eight, interlaced to go to the male. When 20% of the tassels are taken out, the tassels are removed, and one line goes one line at a time, and the side and the ground do not go.
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